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NCP304, NCP305 Voltage Detector Series
The NCP304 and NCP305 series are second generation ultra-low current voltage detectors. These devices are specifically designed for use as reset controllers in portable microprocessor based systems where extended battery life is paramount. Each series features a highly accurate undervoltage detector with hysteresis which prevents erratic system reset operation as the comparator threshold is crossed. The NCP304 series consists of complementary output devices that are available with either an active high or active low reset output. The NCP305 series has an open drain N-Channel output with an active low reset output. The NCP304 and NCP305 device series are available in the SC-82AB package with standard undervoltage thresholds. Additional thresholds that range from 0.9 V to 4.9 V in 100 mV steps can be manufactured.
Features
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4 1 SC-82AB SQ SUFFIX CASE 419C
PIN CONNECTIONS AND MARKING DIAGRAM
Reset 1 Output Vin 2 4 xxxm G GND
* * * * * * * * * *
Quiescent Current of 1.0 mA Typical High Accuracy Undervoltage Threshold of 2.0% Wide Operating Voltage Range of 0.8 V to 10 V Complementary or Open Drain Reset Output Active Low or Active High Reset Output Pb-Free Packages are Available* Microprocessor Reset Controller Low Battery Detection Power Fail Indicator Battery Backup Detection
3 (Top View)
N.C.
Typical Applications
xxx = Specific Device Code M = Date Code G = Pb-Free Package
ORDERING INFORMATION
See detailed ordering and shipping information in the ordering information section on page 20 of this data sheet.
NCP304xSQxxT1 Complementary Output Configuration Input 2 Input
NCP305LSQxxT1 Open Drain Output Configuration 2 1 Reset Output
*
Vref
1
Reset Output Vref GND 4
4
GND
This device contains 38 active transistors.
This device contains 37 active transistors.
* The representative block diagram depicts active low reset output `L' suffix devices. The comparator input is interchanged for the active high output `H' suffix devices.
Figure 1. Representative Block Diagrams
*For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.
(c) Semiconductor Components Industries, LLC, 2005
March, 2005 - Rev. 16
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Publication Order Number: NCP304/D
NCP304, NCP305
MAXIMUM RATINGS (Note 1)
Rating Input Power Supply Voltage (Pin 2) Output Voltage (Pin 1) Complementary, NCP304 N-Channel Open Drain, NCP305 Output Current (Pin 1) (Note 2) Thermal Resistance Junction-to-Air Maximum Junction Temperature Storage Temperature Range Latchup Performance (Note 3) Positive Negative Symbol Vin VOUT Value 12 -0.3 to Vin+0.3 -0.3 to 12 70 285 +125 -55 to +150 500 170 mA C/W C C mA Unit V V
IOUT RqJA TJ Tstg ILATCHUP
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. 1. This device series contains ESD protection and exceeds the following tests: Human Body Model 2000 V per MIL-STD-883, Method 3015. Machine Model Method 200 V. 2. The maximum package power dissipation limit must not be exceeded. TJ(max)-TA PD + RqJA 3. Maximum Ratings per JEDEC standard JESD78.
ELECTRICAL CHARACTERISTICS (For all values TA = 25C, unless otherwise noted.)
Characteristic NCP304/5 - 0.9 Detector Threshold (Pin 2, Vin Decreasing) Detector Threshold Hysteresis (Pin 2, Vin Increasing) Supply Current (Pin 2) (Vin = 0.8 V) (Vin = 2.9 V) Maximum Operating Voltage (Pin 2) Minimum Operating Voltage (Pin 2) (TA = -40C to 85C) Reset Output Current (Pin 1, Active Low `L' Suffix Devices) N-Channel Sink Current, NCP304, NCP305 (VOUT = 0.05 V, Vin = 0.70 V) (VOUT = 0.50 V, Vin = 0.85 V) P-Channel Source Current, NCP304 (VOUT = 2.4 V, Vin = 4.5 V) Reset Output Current (Pin 1, Active High `H' Suffix Devices) N-Channel Sink Current, NCP304, NCP305 (VOUT = 0.5 V, Vin = 1.5 V) P-Channel Source Current, NCP304 (VOUT = 0.4 V, Vin = 0.7 V) (VOUT = GND, Vin = 0.8 V) Propagation Delay Input to Output (Figure 2) IOUT 1.05 0.011 0.014 2.5 0.04 0.08 - - - ms VDET- VHYS Iin 0.882 0.027 - - - - - 0.900 0.045 0.8 - - 0.55 0.65 0.918 0.063 2.4 3.0 10 0.70 0.80 V V mA Symbol Min Typ Max Unit
Vin(max) Vin(min) IOUT
V V mA
0.01 0.05 1.0
0.05 0.50 2.0
- - - mA
4. In the case of CMOS Output Type: The time interval between the rising edge of VDD input pulse from 0.7 V to (+VDET) +2.0 V and output voltage level becoming to VDD/2. In the case of N-Channel Open Drain Output Type: Output pin is pulled up with a resistance of 470 kW to 5.0 V, the time interval between the rising edge of VDD input pulse from 0.7 V to (+VDET) +2.0 V and output voltage level becoming to 2.5 V.
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NCP304, NCP305
ELECTRICAL CHARACTERISTICS (continued) (For all values TA = 25C, unless otherwise noted.)
Characteristic NCP304/5 - 0.9 Complementary Output NCP304 Series Output Transition, High to Low (Note 4) Output Transition, Low to High (Note 4) N-Channel Open Drain NCP305 Series Output Transition, High to Low (Note 4) Output Transition, Low to High (Note 4) NCP304/5 - 1.8 Detector Threshold (Pin 2, Vin Decreasing) Detector Threshold Hysteresis (Pin 2, Vin Increasing) Supply Current (Pin 2) (Vin = 1.7 V) (Vin = 3.8 V) Maximum Operating Voltage (Pin 2) Minimum Operating Voltage (Pin 2) (TA = -40C to 85C) Reset Output Current (Pin 1, Active Low `L' Suffix Devices) N-Channel Sink Current, NCP304, NCP305 (VOUT = 0.05 V, Vin = 0.70 V) (VOUT = 0.50 V, Vin = 1.5 V) P-Channel Source Current, NCP304 (VOUT = 2.4 V, Vin = 4.5 V) Reset Output Current (Pin 1, Active High `H' Suffix Devices) N-Channel Sink Current, NCP304, NCP305 (VOUT = 0.5 V, Vin = 5.0 V) P-Channel Source Current, NCP304 (VOUT = 0.4 V, Vin = 0.7 V) (VOUT = GND, Vin = 1.5 V) Propagation Delay Input to Output (Figure 2) Complementary Output NCP304 Series Output Transition, High to Low (Note 4) Output Transition, Low to High (Note 4) N-Channel Open Drain NCP305 Series Output Transition, High to Low (Note 4) Output Transition, Low to High (Note 4) NCP304/5 - 2.0 Detector Threshold (Pin 2, Vin Decreasing) Detector Threshold Hysteresis (Pin 2, Vin Increasing) Supply Current (Pin 2) (Vin = 1.9 V) (Vin = 4.0 V) Maximum Operating Voltage (Pin 2) Minimum Operating Voltage (Pin 2) (TA = -40C to 85C) Reset Output Current (Pin 1, Active Low `L' Suffix Devices) VDET- VHYS Iin 1.960 0.06 - - - - - 2.00 0.10 0.9 1.1 - 0.55 0.65 2.040 0.14 2.7 3.3 10 0.70 0.80 V V mA tpHL tpLH tpHL tpLH - - - - 14 15 14 - - 60 - 100 IOUT 6.3 0.011 0.525 11 0.04 0.6 - - - ms VDET- VHYS Iin 1.764 0.054 - - - - - 1.80 0.090 0.8 1.0 - 0.55 0.65 1.836 0.126 2.4 3.0 10 0.70 0.80 V V mA tpHL tpLH tpHL tpLH - - - - 18 6.0 18 - - 60 - 100 Symbol Min Typ Max Unit
Vin(max) Vin(min) IOUT
V V mA
0.01 1.0 1.0
0.05 2.0 2.0
- - - mA
Vin(max) Vin(min) IOUT
V V mA
4. In the case of CMOS Output Type: The time interval between the rising edge of VDD input pulse from 0.7 V to (+VDET) +2.0 V and output voltage level becoming to VDD/2. In the case of N-Channel Open Drain Output Type: Output pin is pulled up with a resistance of 470 kW to 5.0 V, the time interval between the rising edge of VDD input pulse from 0.7 V to (+VDET) +2.0 V and output voltage level becoming to 2.5 V.
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NCP304, NCP305
ELECTRICAL CHARACTERISTICS (continued) (For all values TA = 25C, unless otherwise noted.)
Characteristic NCP304/5 - 2.0 N-Channel Sink Current, NCP304, NCP305 (VOUT = 0.05 V, Vin = 0.70 V) (VOUT = 0.50 V, Vin = 1.5 V) P-Channel Source Current, NCP304 (VOUT = 2.4 V, Vin = 4.5 V) Reset Output Current (Pin 1, Active High `H' Suffix Devices) N-Channel Sink Current, NCP304, NCP305 (VOUT = 0.5 V, Vin = 5.0 V) P-Channel Source Current, NCP304 (VOUT = 0.4 V, Vin = 0.7 V) (VOUT = GND, Vin = 1.5 V) Propagation Delay Input to Output (Figure 2) Complementary Output NCP304 Series Output Transition, High to Low (Note 4) Output Transition, Low to High (Note 4) N-Channel Open Drain NCP305 Series Output Transition, High to Low (Note 4) Output Transition, Low to High (Note 4) NCP304/5 - 2.7 Detector Threshold (Pin 2, Vin Decreasing) Detector Threshold Hysteresis (Pin 2, Vin Increasing) Supply Current (Pin 2) (Vin = 2.6 V) (Vin = 4.7 V) Maximum Operating Voltage (Pin 2) Minimum Operating Voltage (Pin 2) (TA = -40C to 85C) Reset Output Current (Pin 1, Active Low `L' Suffix Devices) N-Channel Sink Current, NCP304, NCP305 (VOUT = 0.05 V, Vin = 0.70 V) (VOUT = 0.50 V, Vin = 1.5 V) P-Channel Source Current, NCP304 (VOUT = 2.4 V, Vin = 4.5 V) Reset Output Current (Pin 1, Active High `H' Suffix Devices) N-Channel Sink Current, NCP304, NCP305 (VOUT = 0.5 V, Vin = 5.0 V) P-Channel Source Current, NCP304 (VOUT = 0.4 V, Vin = 0.7 V) (VOUT = GND, Vin = 1.5 V) Propagation Delay Input to Output (Figure 2) Complementary Output NCP304 Series Output Transition, High to Low (Note 4) Output Transition, Low to High (Note 4) N-Channel Open Drain NCP305 Series Output Transition, High to Low (Note 4) Output Transition, Low to High (Note 4) tpHL tpLH tpHL tpLH - - - - 12 19 12 - - 60 - 100 IOUT 6.3 0.011 0.525 11 0.04 0.6 - - - ms VDET- VHYS Iin 2.646 0.081 - - - - - 2.700 0.135 0.9 1.1 - 0.55 0.65 2.754 0.189 2.7 3.3 10 0.70 0.80 V V mA tpHL tpLH tpHL tpLH - - - - 13 15 13 - - 60 - 100 IOUT 6.3 0.011 0.525 11 0.04 0.6 - - - ms 0.01 1.0 1.0 0.05 2.0 2.0 - - - mA Symbol Min Typ Max Unit
Vin(max) Vin(min) IOUT
V V mA
0.01 1.0 1.0
0.05 2.0 2.0
- - - mA
4. In the case of CMOS Output Type: The time interval between the rising edge of VDD input pulse from 0.7 V to (+VDET) +2.0 V and output voltage level becoming to VDD/2. In the case of N-Channel Open Drain Output Type: Output pin is pulled up with a resistance of 470 kW to 5.0 V, the time interval between the rising edge of VDD input pulse from 0.7 V to (+VDET) +2.0 V and output voltage level becoming to 2.5 V.
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NCP304, NCP305
ELECTRICAL CHARACTERISTICS (continued) (For all values TA = 25C, unless otherwise noted.)
Characteristic NCP304/5 - 2.9 Detector Threshold (Pin 2, Vin Decreasing) Detector Threshold Hysteresis (Pin 2, Vin Increasing) Supply Current (Pin 2) (Vin = 2.8 V) (Vin = 4.9 V) Maximum Operating Voltage (Pin 2) Minimum Operating Voltage (Pin 2) (TA = -40C to 85C) Reset Output Current (Pin 1, Active Low `L' Suffix Devices) N-Channel Sink Current, NCP304, NCP305 (VOUT = 0.05 V, Vin = 0.70 V) (VOUT = 0.50 V, Vin = 1.5 V) P-Channel Source Current, NCP304 (VOUT = 2.4 V, Vin = 4.5 V) Reset Output Current (Pin 1, Active High `H' Suffix Devices) N-Channel Sink Current, NCP304, NCP305 (VOUT = 0.5 V, Vin = 5.0 V) P-Channel Source Current, NCP304 (VOUT = 0.4 V, Vin = 0.7 V) (VOUT = GND, Vin = 1.5 V) Propagation Delay Input to Output (Figure 2) Complementary Output NCP304 Series Output Transition, High to Low (Note 4) Output Transition, Low to High (Note 4) N-Channel Open Drain NCP305 Series Output Transition, High to Low (Note 4) Output Transition, Low to High (Note 4) NCP304/5 - 3.0 Detector Threshold (Pin 2, Vin Decreasing) Detector Threshold Hysteresis (Pin 2, Vin Increasing) Supply Current (Pin 2) (Vin = 2.87 V) (Vin = 5.0 V) Maximum Operating Voltage (Pin 2) Minimum Operating Voltage (Pin 2) (TA = -40C to 85C) Reset Output Current (Pin 1, Active Low `L' Suffix Devices) N-Channel Sink Current, NCP304, NCP305 (VOUT = 0.05 V, Vin = 0.70 V) (VOUT = 0.50 V, Vin = 1.5 V) P-Channel Source Current, NCP304 (VOUT = 2.4 V, Vin = 4.5 V) Reset Output Current (Pin 1, Active High `H' Suffix Devices) N-Channel Sink Current, NCP304, NCP305 (VOUT = 0.5 V, Vin = 5.0 V) IOUT 6.3 11 - VDET- VHYS Iin 2.94 0.09 - - - - - 3.00 0.15 1.0 1.2 - 0.55 0.65 3.06 0.21 3.0 3.6 10 0.70 0.80 V V mA tpHL tpLH tpHL tpLH - - - - 12 19 12 - - 60 - 100 IOUT 6.3 0.011 0.525 11 0.04 0.6 - - - ms VDET- VHYS Iin 2.842 0.087 - - - - - 2.900 0.145 0.9 1.1 - 0.55 0.65 2.958 0.203 2.9 3.5 10 0.70 0.80 V V mA Symbol Min Typ Max Unit
Vin(max) Vin(min) IOUT
V V mA
0.01 1.0 1.0
0.05 2.0 2.0
- - - mA
Vin(max) Vin(min) IOUT
V V mA
0.01 1.0 1.0
0.05 2.0 2.0
- - - mA
4. In the case of CMOS Output Type: The time interval between the rising edge of VDD input pulse from 0.7 V to (+VDET) +2.0 V and output voltage level becoming to VDD/2. In the case of N-Channel Open Drain Output Type: Output pin is pulled up with a resistance of 470 kW to 5.0 V, the time interval between the rising edge of VDD input pulse from 0.7 V to (+VDET) +2.0 V and output voltage level becoming to 2.5 V.
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NCP304, NCP305
ELECTRICAL CHARACTERISTICS (continued) (For all values TA = 25C, unless otherwise noted.)
Characteristic NCP304/5 - 3.0 P-Channel Source Current, NCP304 (VOUT = 0.4 V, Vin = 0.7 V) (VOUT = GND, Vin = 1.5 V) Propagation Delay Input to Output (Figure 2) Complementary Output NCP304 Series Output Transition, High to Low (Note 4) Output Transition, Low to High (Note 4) N-Channel Open Drain NCP305 Series Output Transition, High to Low (Note 4) Output Transition, Low to High (Note 4) NCP304/5 - 4.5 Detector Threshold (Pin 2, Vin Decreasing) Detector Threshold Hysteresis (Pin 2, Vin Increasing) Supply Current (Pin 2) (Vin = 4.34 V) (Vin = 6.5 V) Maximum Operating Voltage (Pin 2) Minimum Operating Voltage (Pin 2) (TA = -40C to 85C) Reset Output Current (Pin 1, Active Low `L' Suffix Devices) N-Channel Sink Current, NCP304, NCP305 (VOUT = 0.05 V, Vin = 0.70 V) (VOUT = 0.50 V, Vin = 1.5 V) P-Channel Source Current, NCP304 (VOUT = 5.9 V, Vin = 8.0 V) Reset Output Current (Pin 1, Active High `H' Suffix Devices) N-Channel Sink Current, NCP304, NCP305 (VOUT = 0.5 V, Vin = 5.0 V) P-Channel Source Current, NCP304 (VOUT = 0.4 V, Vin = 0.7 V) (VOUT = GND, Vin = 1.5 V) Propagation Delay Input to Output (Figure 2) Complementary Output NCP304 Series Output Transition, High to Low (Note 4) Output Transition, Low to High (Note 4) N-Channel Open Drain NCP305 Series Output Transition, High to Low (Note 4) Output Transition, Low to High (Note 4) NCP304/5 - 4.7 Detector Threshold (Pin 2, Vin Decreasing) Detector Threshold Hysteresis (Pin 2, Vin Increasing) Supply Current (Pin 2) (Vin = 4.54 V) (Vin = 6.7 V) Maximum Operating Voltage (Pin 2) VDET- VHYS Iin 4.606 0.141 - - - 4.70 0.235 1.1 1.3 - 4.794 0.329 3.0 3.9 10 V V mA tpHL tpLH tpHL tpLH - - - - 10 21 10 - - 60 - 100 IOUT 6.3 0.011 0.525 11 0.04 0.6 - - - ms VDET- VHYS Iin 4.410 0.135 - - - - - 4.500 0.225 - - - 0.55 0.65 4.590 0.315 3.0 3.9 10 0.70 0.80 V V mA tpHL tpLH tpHL tpLH - - - - 12 19 12 - - 60 - 100 0.011 0.525 0.04 0.6 - - ms Symbol Min Typ Max Unit
Vin(max) Vin(min) IOUT
V V mA
0.01 1.0 1.5
0.05 2.0 3.0
- - - mA
Vin(max)
V
4. In the case of CMOS Output Type: The time interval between the rising edge of VDD input pulse from 0.7 V to (+VDET) +2.0 V and output voltage level becoming to VDD/2. In the case of N-Channel Open Drain Output Type: Output pin is pulled up with a resistance of 470 kW to 5.0 V, the time interval between the rising edge of VDD input pulse from 0.7 V to (+VDET) +2.0 V and output voltage level becoming to 2.5 V.
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NCP304, NCP305
ELECTRICAL CHARACTERISTICS (continued) (For all values TA = 25C, unless otherwise noted.)
Characteristic NCP304/5 - 4.7 Minimum Operating Voltage (Pin 2) (TA = -40C to 85C) Reset Output Current (Pin 1, Active Low `L' Suffix Devices) N-Channel Sink Current, NCP304, NCP305 (VOUT = 0.05 V, Vin = 0.70 V) (VOUT = 0.50 V, Vin = 1.5 V) P-Channel Source Current, NCP304 (VOUT = 5.9 V, Vin = 8.0 V) Reset Output Current (Pin 1, Active High `H' Suffix Devices) N-Channel Sink Current, NCP304, NCP305 (VOUT = 0.5 V, Vin = 5.0 V) P-Channel Source Current, NCP304 (VOUT = 0.4 V, Vin = 0.7 V) (VOUT = GND, Vin = 1.5 V) Propagation Delay Input to Output (Figure 2) Complementary Output NCP304 Series Output Transition, High to Low (Note 4) Output Transition, Low to High (Note 4) N-Channel Open Drain NCP305 Series Output Transition, High to Low (Note 4) Output Transition, Low to High (Note 4) tpHL tpLH tpHL tpLH - - - - 10 21 10 - - 60 - 100 IOUT 6.3 0.011 0.525 11 0.04 0.6 - - - ms Vin(min) IOUT 0.01 1.0 1.5 0.05 2.0 3.0 - - - mA - - 0.55 0.65 0.70 0.80 V mA Symbol Min Typ Max Unit
4. In the case of CMOS Output Type: The time interval between the rising edge of VDD input pulse from 0.7 V to (+VDET) +2.0 V and output voltage level becoming to VDD/2. In the case of N-Channel Open Drain Output Type: Output pin is pulled up with a resistance of 470 kW to 5.0 V, the time interval between the rising edge of VDD input pulse from 0.7 V to (+VDET) +2.0 V and output voltage level becoming to 2.5 V.
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NCP304, NCP305
VDET+ + 2 Input Voltage, Pin 2 0.7 0V
5V Reset Output Voltage, Pin 1 0.5 V 0V
2.5 V
NCP305L Open Drain
VDET+ + 2 Reset Output Voltage, Pin 1 VDET+ + 2 2 0V 0.1 V tpLH tpHL
NCP304L Complementary
NCP304 and NCP305 series are measured with a 10 pF capacitive load. NCP305 has an additional 470 k pullup resistor connected from the reset output to +5.0 V. The reset output voltage waveforms are shown for the active low `L' devices. The upper detector threshold, VDET+ is the sum of the lower detector threshold, VDET- plus the input hysteresis, VHYS.
Figure 2. Propagation Delay Measurement Conditions
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NCP304, NCP305
Table 1. NCP304 SERIES ELECTRICAL CHARACTERISTIC TABLE FOR 0.9 - 4.9 V
Supply Current Vin Low Iin (mA) (Note 5) Max 0.063 0.070 0.077 0.084 0.091 0.098 0.105 0.112 0.119 0.126 0.133 0.140 0.147 0.154 0.161 0.168 0.175 0.182 0.189 0.196 0.203 0.210 0.217 0.224 0.231 0.238 0.245 0.252 0.259 0.266 0.273 0.280 0.287 0.294 0.301 0.308 0.315 0.322 0.329 0.336 0.343 1.1 1.3 3.0 1.0 1.2 0.9 1.1 2.0 Typ 0.8 Vin High Iin (mA) (Note 6) Typ 0.9 1.0 1.0 N-Channel Sink Current Vin Low IOUT (mA) (Note 7) Typ 0.05 Vin High IOUT (mA) (Note 8) Typ 0.5 P-Channel Source Current IOUT (mA) (Note 9) Typ 2.0
Detector Threshold
Detector Threshold Hysteresis
VDET- (V) Part Number NCP304LSQ09T1 NCP304LSQ10T1 NCP304LSQ11T1 NCP304LSQ12T1 NCP304LSQ13T1 NCP304LSQ14T1 NCP304LSQ15T1 NCP304LSQ16T1 NCP304LSQ17T1 NCP304LSQ18T1 NCP304LSQ19T1 NCP304LSQ20T1 NCP304LSQ21T1 NCP304LSQ22T1 NCP304LSQ23T1 NCP304LSQ24T1 NCP304LSQ25T1 NCP304LSQ26T1 NCP304LSQ27T1 NCP304LSQ28T1 NCP304LSQ29T1 NCP304LSQ30T1 NCP304LSQ31T1 NCP304LSQ32T1 NCP304LSQ33T1 NCP304LSQ34T1 NCP304LSQ35T1 NCP304LSQ36T1 NCP304LSQ37T1 NCP304LSQ38T1 NCP304LSQ39T1 NCP304LSQ40T1 NCP304LSQ41T1 NCP304LSQ42T1 NCP304LSQ43T1 NCP304LSQ44T1 NCP304LSQ45T1 NCP304LSQ46T1 NCP304LSQ47T1 NCP304LSQ48T1 NCP304LSQ49T1 5. 6. 7. 8. Condition 1: Condition 2: Condition 3: Condition 4: Condition 4: 9. Condition 5: Min 0.882 0.980 1.078 1.176 1.274 1.372 1.470 1.568 1.666 1.764 1.862 1.960 2.058 2.156 2.254 2.352 2.450 2.548 2.646 2.744 2.842 2.940 3.038 3.136 3.234 3.332 3.430 3.528 3.626 3.724 3.822 3.920 4.018 4.116 4.214 4.312 4.410 4.508 4.606 4.704 4.802 Typ 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 Max 0.918 1.020 1.122 1.224 1.326 1.428 1.530 1.632 1.734 1.836 1.938 2.040 2.142 2.244 2.346 2.448 2.550 2.652 2.754 2.856 2.958 3.060 3.162 3.264 3.366 3.468 3.570 3.672 3.774 3.876 3.978 4.080 4.182 4.284 4.386 4.488 4.590 4.692 4.794 4.896 4.998 Min 0.027 0.030 0.033 0.036 0.039 0.042 0.045 0.048 0.051 0.054 0.057 0.060 0.063 0.066 0.069 0.072 0.075 0.078 0.081 0.084 0.087 0.090 0.093 0.096 0.099 0.102 0.105 0.108 0.111 0.114 0.117 0.120 0.123 0.126 0.129 0.132 0.135 0.138 0.141 0.144 0.147
VHYS (V) Typ 0.045 0.050 0.055 0.060 0.065 0.070 0.075 0.080 0.085 0.090 0.095 0.100 0.105 0.110 0.115 0.120 0.125 0.130 0.135 0.140 0.145 0.150 0.155 0.160 0.165 0.170 0.175 0.180 0.185 0.190 0.195 0.200 0.205 0.210 0.215 0.220 0.225 0.230 0.235 0.240 0.245
0.9 - 2.9 V, Vin = VDET- - 0.10 V; 3.0 - 3.9 V, Vin = VDET- - 0.13 V; 4.0 - 4.9 V, Vin = VDET- - 0.16 V 0.9 - 4.9 V, Vin = VDET- + 2.0 V 0.9 - 4.9 V, Vin = 0.7 V, VOUT = 0.05 V, Active Low `L' Suffix Devices 0.9 - 1.0 V, Vin = 0.85 V, VOUT = 0.5 V; 1.1 - 1.5 V, Vin = 1.0 V, VOUT = 0.5 V; 1.6 - 4.9 V, Vin = 1.5 V, VOUT = 0.5 V, Active Low `L' Suffix Devices 0.9 - 3.9 V, Vin = 4.5 V, VOUT = 2.4 V; 4.0 - 4.9 V, Vin = 8.0 V, VOUT = 5.9 V, Active Low `L' Suffix Devices
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NCP304, NCP305
Table 2. NCP304 SERIES ELECTRICAL CHARACTERISTIC TABLE FOR 0.9 - 4.9 V
Supply Current Vin Low Iin (mA) (Note 10 ) Max 0.063 0.070 0.077 0.084 0.091 0.098 0.105 0.112 0.119 0.126 0.133 0.140 0.147 0.154 0.161 0.168 0.175 0.182 0.189 0.196 0.203 0.210 0.217 0.224 0.231 0.238 0.245 0.252 0.259 0.266 0.273 0.280 0.287 0.294 0.301 0.308 0.315 0.322 0.329 0.336 0.343 1.1 1.3 1.0 1.2 0.9 1.1 11 0.6 Typ 0.8 Vin High Iin (mA) (Note 11) Typ 0.9 1.0 0.18 N-Channel Sink Current IOUT (mA) (Note 12) Typ 2.5 P-Channel Source Current Vin Low IOUT (mA) (Note 13) Typ 0.04 Vin High IOUT (mA) (Note 14) Typ 0.08
Detector Threshold
Detector Threshold Hysteresis
VDET- (V) Part Number NCP304HSQ09T1 NCP304HSQ10T1 NCP304HSQ11T1 NCP304HSQ12T1 NCP304HSQ13T1 NCP304HSQ14T1 NCP304HSQ15T1 NCP304HSQ16T1 NCP304HSQ17T1 NCP304HSQ18T1 NCP304HSQ19T1 NCP304HSQ20T1 NCP304HSQ21T1 NCP304HSQ22T1 NCP304HSQ23T1 NCP304HSQ24T1 NCP304HSQ25T1 NCP304HSQ26T1 NCP304HSQ27T1 NCP304HSQ28T1 NCP304HSQ29T1 NCP304HSQ30T1 NCP304HSQ31T1 NCP304HSQ32T1 NCP304HSQ33T1 NCP304HSQ34T1 NCP304HSQ35T1 NCP304HSQ36T1 NCP304HSQ37T1 NCP304HSQ38T1 NCP304HSQ39T1 NCP304HSQ40T1 NCP304HSQ41T1 NCP304HSQ42T1 NCP304HSQ43T1 NCP304HSQ44T1 NCP304HSQ45T1 NCP304HSQ46T1 NCP304HSQ47T1 NCP304HSQ48T1 NCP304HSQ49T1 Min 0.882 0.980 1.078 1.176 1.274 1.372 1.470 1.568 1.666 1.764 1.862 1.960 2.058 2.156 2.254 2.352 2.450 2.548 2.646 2.744 2.842 2.940 3.038 3.136 3.234 3.332 3.430 3.528 3.626 3.724 3.822 3.920 4.018 4.116 4.214 4.312 4.410 4.508 4.606 4.704 4.802 Typ 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 Max 0.918 1.020 1.122 1.224 1.326 1.428 1.530 1.632 1.734 1.836 1.938 2.040 2.142 2.244 2.346 2.448 2.550 2.652 2.754 2.856 2.958 3.060 3.162 3.264 3.366 3.468 3.570 3.672 3.774 3.876 3.978 4.080 4.182 4.284 4.386 4.488 4.590 4.692 4.794 4.896 4.998 Min 0.027 0.030 0.033 0.036 0.039 0.042 0.045 0.048 0.051 0.054 0.057 0.060 0.063 0.066 0.069 0.072 0.075 0.078 0.081 0.084 0.087 0.090 0.093 0.096 0.099 0.102 0.105 0.108 0.111 0.114 0.117 0.120 0.123 0.126 0.129 0.132 0.135 0.138 0.141 0.144 0.147
VHYS (V) Typ 0.045 0.050 0.055 0.060 0.065 0.070 0.075 0.080 0.085 0.090 0.095 0.100 0.105 0.110 0.115 0.120 0.125 0.130 0.135 0.140 0.145 0.150 0.155 0.160 0.165 0.170 0.175 0.180 0.185 0.190 0.195 0.200 0.205 0.210 0.215 0.220 0.225 0.230 0.235 0.240 0.245
10. Condition 1: 0.9 - 2.9 V, Vin = VDET- - 0.10 V; 3.0 - 3.9 V, Vin = VDET- - 0.13 V; 4.0 - 4.9 V, Vin = VDET- - 0.16 V 11. Condition 2: 0.9 - 4.9 V, Vin = VDET- + 2.0 V 12. Condition 3: 0.9 - 1.4 V, Vin = 1.5 V, VOUT = 0.5 V; 1.5 - 4.9 V, Vin = 5.0 V, VOUT = 0.5 V, Active High `H' Suffix Devices 13. Condition 4: 0.9 - 4.9 V, Vin = 0.7 V, VOUT = 0.4 V, Active High `H' Suffix Devices 14. Condition 5: 0.9 - 1.0 V, Vin = 0.8 V, VOUT = GND; 1.1 - 1.5 V, Vin = 1.0 V, VOUT = GND; 1.6 - 4.9 V, Vin = 1.5 V, VOUT = GND, Active High `H' Suffix Devices
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NCP304, NCP305
Table 3. NCP305 SERIES ELECTRICAL CHARACTERISTIC TABLE FOR 0.9 - 4.9 V
Supply Current Vin Low Iin (mA) (Note 15) Max 0.063 0.070 0.077 0.084 0.091 0.098 0.105 0.112 0.119 0.126 0.133 0.140 0.147 0.154 0.161 0.168 0.175 0.182 0.189 0.196 0.203 0.210 0.217 0.224 0.231 0.238 0.245 0.252 0.259 0.266 0.273 0.280 0.287 0.294 0.301 0.308 0.315 0.322 0.329 0.336 0.343 1.1 1.3 1.0 1.2 0.9 1.1 2.0 Typ 0.8 Vin High Iin (mA) (Note 16) Typ 0.9 1.0 1.0 N-Channel Sink Current Vin Low IOUT (mA) (Note 17) Typ 0.05 Vin High IOUT (mA) (Note 18) Typ 0.5
Detector Threshold
Detector Threshold Hysteresis
VDET- (V) Part Number NCP305LSQ09T1 NCP305LSQ10T1 NCP305LSQ11T1 NCP305LSQ12T1 NCP305LSQ13T1 NCP305LSQ14T1 NCP305LSQ15T1 NCP305LSQ16T1 NCP305LSQ17T1 NCP305LSQ18T1 NCP305LSQ19T1 NCP305LSQ20T1 NCP305LSQ21T1 NCP305LSQ22T1 NCP305LSQ23T1 NCP305LSQ24T1 NCP305LSQ25T1 NCP305LSQ26T1 NCP305LSQ27T1 NCP305LSQ28T1 NCP305LSQ29T1 NCP305LSQ30T1 NCP305LSQ31T1 NCP305LSQ32T1 NCP305LSQ33T1 NCP305LSQ34T1 NCP305LSQ35T1 NCP305LSQ36T1 NCP305LSQ37T1 NCP305LSQ38T1 NCP305LSQ39T1 NCP305LSQ40T1 NCP305LSQ41T1 NCP305LSQ42T1 NCP305LSQ43T1 NCP305LSQ44T1 NCP305LSQ45T1 NCP305LSQ46T1 NCP305LSQ47T1 NCP305LSQ48T1 NCP305LSQ49T1 Min 0.882 0.980 1.078 1.176 1.274 1.372 1.470 1.568 1.666 1.764 1.862 1.960 2.058 2.156 2.254 2.352 2.450 2.548 2.646 2.744 2.842 2.940 3.038 3.136 3.234 3.332 3.430 3.528 3.626 3.724 3.822 3.920 4.018 4.116 4.214 4.312 4.410 4.508 4.606 4.704 4.802 Typ 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 Max 0.918 1.020 1.122 1.224 1.326 1.428 1.530 1.632 1.734 1.836 1.938 2.040 2.142 2.244 2.346 2.448 2.550 2.652 2.754 2.856 2.958 3.060 3.162 3.264 3.366 3.468 3.570 3.672 3.774 3.876 3.978 4.080 4.182 4.284 4.386 4.488 4.590 4.692 4.794 4.896 4.998 Min 0.027 0.030 0.033 0.036 0.039 0.042 0.045 0.048 0.051 0.054 0.057 0.060 0.063 0.066 0.069 0.072 0.075 0.078 0.081 0.084 0.087 0.090 0.093 0.096 0.099 0.102 0.105 0.108 0.111 0.114 0.117 0.120 0.123 0.126 0.129 0.132 0.135 0.138 0.141 0.144 0.147
VHYS (V) Typ 0.045 0.050 0.055 0.060 0.065 0.070 0.075 0.080 0.085 0.090 0.095 0.100 0.105 0.110 0.115 0.120 0.125 0.130 0.135 0.140 0.145 0.150 0.155 0.160 0.165 0.170 0.175 0.180 0.185 0.190 0.195 0.200 0.205 0.210 0.215 0.220 0.225 0.230 0.235 0.240 0.245
15. Condition 1: 0.9 - 2.9 V, Vin = VDET- - 0.10 V; 3.0 - 3.9 V, Vin = VDET- - 0.13 V; 4.0 - 4.9 V, Vin = VDET- - 0.16 V 16. Condition 2: 0.9 - 4.9 V, Vin = VDET- + 2.0 V 17. Condition 3: 0.9 - 4.9 V, Vin = 0.7 V, VOUT = 0.05 V, Active Low `L' Suffix Devices 18. Condition 4: 0.9 - 1.0 V, Vin = 0.85 V, VOUT = 0.5 V; 1.1 - 1.5 V, Vin = 1.0 V, VOUT = 0.5 V; 1.6 - 4.9 V, Vin = 1.5 V, VOUT = 0.5 V, Active Low `L' Suffix Devices
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NCP304, NCP305
VDET, DETECTOR THRESHOLD VOLTAGE (V) VDET, DETECTOR THRESHOLD VOLTAGE (V) 0.98 0.96 VDET+ 0.94 0.92 0.90 0.88 0.86 -50 VDET- 3.00 2.95 2.90 2.85 2.80 2.75 2.70 2.65 2.60 -50 -25 0 25 50 75 100 VDET- VDET+
-25
0
25
50
75
100
TA, AMBIENT TEMPERATURE (C)
TA, AMBIENT TEMPERATURE (C)
Figure 3. NCP304/5 Series 0.9 V Detector Threshold Voltage vs. Temperature
VDET, DETECTOR THRESHOLD VOLTAGE (V)
Figure 4. NCP304/5 Series 2.7 V Detector Threshold Voltage vs. Temperature
4.9 4.8 VDET+ 4.7 4.6 4.5 4.4 4.3 -50 VDET- VOUT, OUTPUT VOLTAGE (V)
1.0 0.8 0.6 0.4 0.2 0 TA = -30C TA = 25C TA = 85C
-25
0
25
50
75
100
0
0.2
TA, AMBIENT TEMPERATURE (C)
0.4 0.6 Vin, INPUT VOLTAGE (V)
0.8
1.0
Figure 5. NCP304/5 Series 4.5 V Detector Threshold Voltage vs. Temperature
Figure 6. NCP304L/5L Series 0.9 V Reset Output Voltage vs. Input Voltage
3.0 VOUT, OUTPUT OUTPUT (V) 2.5 2.0 1.5 1.0 0.5 0 0 1.0 TA = -30C TA = 25C TA = 85C 1.5 0.5 2.0 Vin, INPUT VOLTAGE (V) 2.5 3.0 VOUT, OUTPUT OUTPUT (V)
7.0 6.0 5.0 4.0 3.0 2.0 1.0 0 0 1.0 TA = -30C TA = 25C TA = 85C 2.0 4.0 3.0 Vin, INPUT VOLTAGE (V) 5.0 6.0
Figure 7. NCP304L/5L Series 2.7 V Reset Output Voltage vs. Input Voltage
Figure 8. NCP304L/5L Series 4.5 V Reset Output Voltage vs. Input Voltage
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NCP304, NCP305
3.0 IOUT, OUTPUT SINK CURRENT (mA) VOUT, OUTPUT VOLTAGE (V) 2.5 2.0 1.5 1.0 0.5 0 1.2 1.0 0.8 0.6 0.4 0.2 0 0 0.2 0.4 0.6 0.8 1.0 VOUT, OUTPUT VOLTAGE (V) Vin = 0.7 V TA = 25C Vin = 0.85 V
TA = -30C TA = 25C TA = 85C 0 0.5 1.0 1.5 2.0 2.5 3.0 Vin, INPUT VOLTAGE (V)
Figure 9. NCP304H/5H Series 2.7 V Reset Output Voltage vs. Input Voltage
Figure 10. NCP304H/5L Series 0.9 V Reset Output Sink Current vs. Output Voltage
16 IOUT, OUTPUT SINK CURRENT (mA) 14 12 10 8.0 6.0 4.0 2.0 0 0 0.5 1.0 1.5 2.0 2.5 VOUT, OUTPUT VOLTAGE (V) Vin = 1.5 V Vin = 2.0V TA = 25C Vin = 2.5 V IOUT, OUTPUT SINK CURRENT (mA)
35 30 25 20 15 10 5.0 0 0 0.5 1.0 1.5 TA = 25C Vin = 4.0 V Vin = 3.5 V Vin = 3.0 V Vin = 2.5 V Vin = 2.0 V Vin = 1.5 V 2.0 2.5 3.0 3.5 4.0
VOUT, OUTPUT VOLTAGE (V)
Figure 11. NCP304H/5L Series 2.7 V Reset Output Sink Current vs. Output Voltage
Figure 12. NCP304H/5L Series 4.5 V Reset Output Sink Current vs. Output Voltage
IOUT, OUTPUT SOURCE CURRENT (mA)
2.5 2.0 1.5 Vin = 2.0 V 1.0 0.5 0 Vin = 1.5 V Vin = 2.5 V
2.0
Iin, INPUT CURRENT (mA)
1.5
TA = 25C
1.0
0.5
0
0.5
1.0
1.5
2.0
2.5
0 0 2.0 4.0 6.0 Vin, INPUT VOLTAGE (V) 8.0 10
VOUT, OUTPUT VOLTAGE (V)
Figure 13. NCP304H Series 2.7 V Reset Output Source Current vs. Output Voltage
Figure 14. NCP304/5 Series 0.9 V Input Current vs. Input Voltage
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NCP304, NCP305
2 TA = 25C Iin, INPUT CURRENT (mA) 1.5 Iin, INPUT CURRENT (mA) 1.5 2.0 TA = 25C
1.0
1.0
0.5
0.5
0 0 2.0 4.0 6.0 Vin, INPUT VOLTAGE (V) 8.0 10
0 0 2.0 6.0 4.0 Vin, INPUT VOLTAGE (V) 8.0 10
Figure 15. NCP304/5 Series 2.7 V Input Current vs. Input Voltage
Figure 16. NCP304/5 Series 4.5 V Input Current vs. Input Voltage
1.4 IOUT, OUTPUT SINK CURRENT (mA) IOUT, OUTPUT SINK CURRENT (mA) 1.2 1.0 0.8 0.6 0.4 0.2 0 0 0.2 0.4 0.6
7.0 6.0 5.0 4.0 3.0 2.0 1.0 0 0 0.5 1.0 1.5 2.0 2.5 3.0 TA = 25C TA = 85C TA = -30C
TA = 85C TA = 25C TA = -30C 0.8 1.0
Vin, INPUT VOLTAGE (V)
Vin, INPUT VOLTAGE (V)
Figure 17. NCP304H/5L Series 0.9 V Reset Output Sink Current vs. Input Voltage
Figure 18. NCP304H/5L Series 2.7 V Reset Output Sink Current vs. Input Voltage
IOUT, OUTPUT SINK CURRENT (mA)
IOUT, OUTPUT SINK CURRENT (mA)
12 10 TA = -30C 8.0 6.0 4.0 2.0 0 TA = 25C TA = 85C
90 80 70 60 50 40 30 20 10 0 0 2.0 4.0 6.0 8.0 10 Vout = Vin - 2.1 V = Vin - 1.5 V = Vin - 1.0 V = Vin - 0.5 V
0
1.0
2.0
3.0
4.0
5.0
Vin, INPUT VOLTAGE (V)
Vin, INPUT VOLTAGE (V)
Figure 19. NCP304H/5L Series 4.5 V Reset Output Sink Current vs. Input Voltage
Figure 20. NCP304H/5H Series 2.7 V Reset Output Sink Current vs. Input Voltage
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NCP304, NCP305
IOUT, OUTPUT SOURCE CURRENT (mA) IOUT, OUTPUT SOURCE CURRENT (mA) 12 VOUT = Vin -2.1 V 10 8.0 6.0 4.0 2.0 0 0 2.0 4.0 6.0 8.0 10 Vin, INPUT VOLTAGE (V) Vin -1.0 V TA = 25C Vin -1.5 V 12 10 8.0 6.0 4.0 2.0 0 Vin -1.0 V TA = 25C Vin -1.5 V VOUT = Vin -2.1 V
Vin - 0.5 V
Vin - 0.5 V
0
2.0
4.0
6.0
8.0
10
Vin, INPUT VOLTAGE (V)
Figure 21. NCP304H Series 0.9 V Reset Output Source Current vs. Input Voltage
Figure 22. NCP304H Series 2.7 V Reset Output Source Current vs. Input Voltage
IOUT, OUTPUT SOURCE CURRENT (mA)
VOUT = Vin -2.1 V 10 8.0 6.0 4.0 2.0 0 0 2.0 4.0 6.0 8.0 10 Vin, INPUT VOLTAGE (V) Vin -1.0 V TA = 25C Vin -1.5 V
IOUT, OUTPUT SOURCE CURRENT (mA)
12
4.0
3.0
TA = -30C TA = 25C
2.0
Vin - 0.5 V
1.0
TA = 85C
0
0
0.5
1.0
1.5
2.0
2.5
3.0
Vin, INPUT VOLTAGE (V)
Figure 23. NCP304H Series 4.5 V Reset Output Source Current vs. Input Voltage
Figure 24. NCP304H Series 2.7 V Reset Output Source Current vs. Input Voltage
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NCP304, NCP305
OPERATING DESCRIPTION The NCP304 and NCP305 series devices are second generation ultra-low current voltage detectors. Figures 25 and 26 show a timing diagram and a typical application. Initially consider that input voltage Vin is at a nominal level and it is greater than the voltage detector upper threshold (VDET+), and the reset output (Pin 1) will be in the high state for active low devices, or in the low state for active high devices. If there is a power interruption and Vin becomes significantly deficient, it will fall below the lower detector threshold (VDET-). This sequence of events causes the Reset output to be in the low state for active low devices, or in the high state for active high devices. After completion of the power interruption, Vin will again return to its nominal level and become greater than the VDET+. The voltage detector has built-in hysteresis to prevent erratic reset operation as the comparator threshold is crossed. Although these device series are specifically designed for use as reset controllers in portable microprocessor based systems, they offer a cost-effective solution in numerous applications where precise voltage monitoring is required. Figure 26 through Figure 32 shows various application examples.
Input Voltage, Pin 2
Vin VDET+ VDET-
Reset Output (Active Low), Pin 1
Vin VDET+ VDET- 0V
Reset Output (Active High), Pin 1
Vin VDET+ VDET- 0V
Figure 25. Timing Waveforms
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NCP304, NCP305
APPLICATION CIRCUIT INFORMATION
VDD VDD
2
Input 1 Reset Output
*
Reset
NCP304 Series 3 GN D
Microprocessor
* Required for
NCP305
GND
Figure 26. Microprocessor Reset Circuit
2.85 V 2.70 V 2 Input 1 Reset Output
Vin < 2.7 ON
NCP304 LSQ27T1 3 GN D
To Additional Circuitry Vin > 2.835 ON
Figure 27. Battery Charge Indicator
Vsupply 5.0 V 2 Input 1 Reset Output
NCP305 LSQ45T1 3 GN D
3.3 V 2 Input 1 Reset Output
NCP305 LSQ30T1 3 GN D
Low state output if either power supply is below the respective undervoltage detector threshold but greater than 1.0 V.
Figure 28. Dual Power Supply Undervoltage Supervision
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NCP304, NCP305
VDD RH 2 Input RL NCP305 NCP301 LSQ27T1 LSN27T1 3 GN D 1 Reset Output Reset Microprocessor VDD
GN D
Figure 29. Microprocessor Reset Circuit with Additional Hysteresis
Vin Decreasing:
V th + RH )1 R in V DET*
Vin Increasing:
V th + RH )1 R in o R L V DET* ) V HYS
VHYS = Vin Increasing - Vin Decreasing
5.0 V 100 k Test Data C C (mF) 2 Input 1 Reset Output 82 k 0.01 0.1 1.0 fOSC (kHz) 2590 490 52 IQ (mA) 21.77 21.97 22.07
NCP302 NCP301 HSQ27T1 LSN27T1 3 GN D
Figure 30. Simple Clock Oscillator
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2.70 2.70 2.70 2.70 2.70 2.70 2.70 2.70 2.70 2.70 2.84 2.87 2.88 2.91 2.90 2.94 2.98 2.70 3.04 3.15 0.135 0.17 0.19 0.21 0.20 0.24 0.28 0.27 0.34 0.35 0 100 100 100 220 220 220 470 470 470 - 10 6.8 4.3 10 6.8 4.3 10 6.8 4.3
Comparator hysteresis can be increased with the addition of resistor RH. The hysteresis equations have been simplified and do not account for the change of input current Iin as Vin crosses the comparator threshold. The internal resistance, Rin is simply calculated using Iin = 0.26 mA at 2.6 V.
Test Data Vth Decreasing (mV) Vth Increasing (mV) VHYS (mV) RH (W) RL (kW)
NCP304, NCP305
Vsupply This circuit monitors the current at the load. As current flows through the load, a voltage drop with respect to ground appears across Rsense where Vsense = Iload * Rsense. The following conditions apply: If: ILoad t VDET - /Rsense ILoad w (VDET -+VHYS)/Rsense Microcontroller Then: Reset Output = 0 V Reset Output = VDD
Load
VDD
Rsense
2
Input 1
50 k
NCP305 NCP301 LSQ09T1 LSN27T1 3 GND
Reset Output GND
Figure 31. Microcontroller Systems Load Sensing
Vsupply 2 Input 1 Reset Output
NCP305 NCP301 LSQ45T1 LSN27T1 3 GND
2
Input 1 Reset Output
NCP305 NCP301 LSQ27T1 LSN27T1 3 GND
Vin = 1.0 V to 10 V 2 Input 1 Reset Output
NCP305 NCP301 LSQ18T1 LSN27T1 3 GND
A simple voltage monitor can be constructed by connecting several voltage detectors as shown above. Each LED will sequentially turn on when the respective voltage detector threshold (VDET- +VHYS) is exceeded. Note that detector thresholds (VDET-) that range from 0.9 V to 4.9 V in 100 mV steps can be manufactured.
Figure 32. LED Bar Graph
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NCP304, NCP305
ORDERING INFORMATION
Device NCP304LSQ09T1 NCP304LSQ09T1G NCP304LSQ18T1 NCP304LSQ20T1 NCP304LSQ23T1 NCP304LSQ25T1 NCP304LSQ25T1G NCP304LSQ27T1 NCP304LSQ29T1 NCP304LSQ29T1G NCP304LSQ30T1 NCP304LSQ30T1G NCP304LSQ33T1 NCP304LSQ37T1 NCP304LSQ38T1 NCP304LSQ40T1 NCP304LSQ42T1 NCP304LSQ43T1 NCP304LSQ43T1G NCP304LSQ45T1 NCP304LSQ45T1G NCP304LSQ46T1 NCP304LSQ47T1 NCP304LSQ47T1G NCP304HSQ09T1 NCP304HSQ18T1 NCP304HSQ20T1 NCP304HSQ20T1G NCP304HSQ22T1 NCP304HSQ27T1 NCP304HSQ29T1 NCP304HSQ29T1G Threshold Voltage 0.9 0.9 1.8 2.0 2.3 2.5 2.5 2.7 2.9 2.9 3.0 3.0 CMOS 3.3 3.7 3.8 4.0 4.2 4.3 4.3 4.5 4.5 4.6 4.7 4.7 0.9 1.8 2.0 2.0 2.2 2.7 2.9 2.9 CMOS Active High Active Low Output Type Reset Marking SHG SHGG SGX SGV SGR SGP SGPG SGN SGK SGKG SGJ SGJG SGG SGB SGA SFY SFU SFV SFV G SFS SFSG SFR SFQ SFQG SNQ SNZ SOB SOBG SOD SOI SOK SOKG Package SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB SC-82AB SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB SC-82AB SC-82AB SC-82AB SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB SC-82AB SC-82AB (Pb-Free) 3000 / Tape & Reel Shipping
NOTE: The ordering information lists standard undervoltage thresholds with active low outputs. Additional active low threshold devices, ranging from 0.9 V to 4.9 V in 100 mV increments and NCP304 active high output devices, ranging from 0.9 V to 4.9 V in 100 mV increments can be manufactured. Contact your ON Semiconductor representative for availability. The electrical characteristics of these additional devices are shown in Tables 1 and 2. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.
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NCP304, NCP305
ORDERING INFORMATION
Device NCP304HSQ30T1 NCP304HSQ30T1G NCP304HSQ45T1 NCP304HSQ45T1G NCP304HSQ47T1 NCP304HSQ47T1G NCP305LSQ09T1 NCP305LSQ09T1G NCP305LSQ11T1 NCP305LSQ11T1G NCP305LSQ15T1 NCP305LSQ16T1 NCP305LSQ16T1G NCP305LSQ17T1 NCP305LSQ17T1G NCP305LSQ18T1 NCP305LSQ20T1 NCP305LSQ22T1 NCP305LSQ22T1G NCP305LSQ23T1 NCP305LSQ24T1 NCP305LSQ25T1 NCP305LSQ27T1 NCP305LSQ27T1G NCP305LSQ28T1 NCP305LSQ28T1G NCP305LSQ29T1 NCP305LSQ29T1G NCP305LSQ30T1 NCP305LSQ30T1G NCP305LSQ30T3 Threshold Voltage 3.0 3.0 4.5 4.5 4.7 4.7 0.9 0.9 1.1 1.1 1.5 1.6 1.6 1.7 1.7 1.8 2.0 2.2 2.2 2.3 2.4 2.5 2.7 2.7 2.8 2.8 2.9 2.9 3.0 3.0 3.0 Open Drain Active Low CMOS Output Type Reset Marking SOL SOLG SPA SPAG SPC SPCG SIZ SIZG SIX SIXG SIS SIR SIRG SIQ SIQG SIP SIN SIK SIKG SIJ SII SIH SIF SIFG SIE SIEG SID SIDG SIC SICG SIC Package SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB SC-82AB SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB (Pb-Free) SC-82AB 10000 / Tape & Reel 3000 / Tape & Reel 3000 / Tape & Reel Shipping
Active High
NOTE: The ordering information lists standard undervoltage thresholds with active low outputs. Additional active low threshold devices, ranging from 0.9 V to 4.9 V in 100 mV increments and NCP304 active high output devices, ranging from 0.9 V to 4.9 V in 100 mV increments can be manufactured. Contact your ON Semiconductor representative for availability. The electrical characteristics of these additional devices are shown in Tables 1 and 2. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.
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NCP304, NCP305
ORDERING INFORMATION
Device NCP305LSQ31T1 NCP305LSQ32T1 NCP305LSQ33T1 NCP305LSQ34T1 NCP305LSQ35T1 NCP305LSQ35T1G NCP305LSQ36T1 NCP305LSQ36T1G NCP305LSQ37T1 NCP305LSQ37T1G NCP305LSQ40T1 NCP305LSQ44T1 NCP305LSQ45T1 NCP305LSQ45T1G NCP305LSQ47T1 NCP305LSQ49T1 NCP305LSQ49T1G Threshold Voltage 3.1 3.2 3.3 3.4 3.5 3.5 3.6 3.6 3.7 3.7 4.0 4.4 4.5 4.5 4.7 4.9 4.9 Open p Drain Active Low Lo Output Type Reset Marking SIB SIA SHZ SHY SHX SHXG SHU SHUG SHV SHVG SHR SHN SHL SHLG SHJ SHH SHHG Package SC-82AB SC-82AB SC-82AB SC-82AB SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB SC-82AB SC-82AB (Pb-Free) SC-82AB SC-82AB SC-82AB (Pb-Free) 3000 / Tape & Reel Shipping
NOTE: The ordering information lists standard undervoltage thresholds with active low outputs. Additional active low threshold devices, ranging from 0.9 V to 4.9 V in 100 mV increments and NCP304 active high output devices, ranging from 0.9 V to 4.9 V in 100 mV increments can be manufactured. Contact your ON Semiconductor representative for availability. The electrical characteristics of these additional devices are shown in Tables 1 and 2. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.
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NCP304, NCP305
PACKAGE DIMENSIONS
SC-82AB SQ SUFFIX CASE 419C-02 ISSUE C
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. 419C-01 OBSOLETE. NEW STANDARD IS 419C-02. 4. DIMENSIONS A AND B DO NOT INCLUDE MOLD FLASH, PROTRUSIONS, OR GATE BURRS. DIM A B C D F G H J K L N S MILLIMETERS MIN MAX 1.8 2.2 1.15 1.35 0.8 1.1 0.2 0.4 0.3 0.5 1.1 1.5 0.0 0.1 0.10 0.26 0.1 --- 0.05 BSC 0.2 REF 1.8 2.4 INCHES MIN MAX 0.071 0.087 0.045 0.053 0.031 0.043 0.008 0.016 0.012 0.020 0.043 0.059 0.000 0.004 0.004 0.010 0.004 --- 0.002 BSC 0.008 REF 0.07 0.09
A G D 3 PL
4 3
C N
S
1 2
B
K
F L
H J 0.05 (0.002)
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NCP304, NCP305
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. "Typical" parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 61312, Phoenix, Arizona 85082-1312 USA Phone: 480-829-7710 or 800-344-3860 Toll Free USA/Canada Fax: 480-829-7709 or 800-344-3867 Toll Free USA/Canada Email: orderlit@onsemi.com N. American Technical Support: 800-282-9855 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2-9-1 Kamimeguro, Meguro-ku, Tokyo, Japan 153-0051 Phone: 81-3-5773-3850 ON Semiconductor Website: http://onsemi.com Order Literature: http://www.onsemi.com/litorder For additional information, please contact your local Sales Representative.
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NCP304/D

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