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Preliminary Datasheet VOLTAGE DETECTOR General Description AZ70XX Features
* Low Current Consumption: ICCL=300A Typical ICCH=30A Typical Low Minimum Operating Voltage for Output Resetting: 0.8V Typical Built in Hysteresis Voltage: 50mV Typical Open Collector Output Extended Temperature Range: -40 to 85oC
AZ70XX
The AZ70XX series ICs are under voltage detectors with a built in voltage threshold and low power consumption. The AZ70XX are specifically designed to accurately monitor power supplies. The AZ70XX use a precision on-chip voltage reference and a comparator to measure the input operating voltage. These ICs can accurately reset the system after detecting voltage at the time of switching power on and instantaneous power off in various CPU systems and other logic systems. The detect voltage thresholds are 2.3V/2.5V/2.7V/2.9V/3.1V/3.3V/4.2V/4.5Vfor AZ7023/25/27/29/31/33/42/45 respectively. Built in hysteresis helps to prevent erratic operation in the presence of noise. The AZ70XX series are available in 2 standard packages: TO-92 and SOT-89-3.
* * * *
Applications
* * * * * Low Battery Voltage Detector Power Fail Indicator Processor Reset Generator Battery Backup Control Home Electric Appliances
TO-92
SOT-89-3
Figure 1. Package Types of AZ70XX
Jul. 2005 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet VOLTAGE DETECTOR Pin Configuration AZ70XX AZ70XX
Z Package (TO-92)
R Package (SOT-89-3)
3 2 1
OUT GND VCC VCC GND OUT 1 2 3
Figure 2. Pin Configuration of AZ70XX (Top View)
Functional Block Diagram
VCC OUT
+
-
GND
Figure 3. Functional Block Diagram of AZ70XX
Jul. 2005 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet VOLTAGE DETECTOR Ordering Information AZ70XX
AZ70 Circuit Type Detect Voltage 23: 2.3V 31: 3.1V 25: 2.5V 33: 3.3V 27: 2.7V 42: 4.2V 29: 2.9V 45: 4.5V
Part Number Tin Lead AZ7023Z AZ7023ZTR AZ7025Z AZ7025ZTR AZ7027Z AZ7027ZTR AZ7029Z AZ7029ZTR AZ7031Z AZ7031ZTR AZ7033Z AZ7033ZTR AZ7042Z AZ7042ZTR AZ7045Z AZ7045ZTR AZ7023RTR AZ7025RTR AZ7027RTR AZ7029RTR AZ7031RTR AZ7033RTR AZ7042RTR AZ7045RTR Lead Free AZ7023Z-E1 AZ7023ZTR-E1 AZ7025Z-E1 AZ7025ZTR-E1 AZ7027Z-E1 AZ7027ZTR-E1 AZ7029Z-E1 AZ7029ZTR-E1 AZ7031Z-E1 AZ7031ZTR-E1 AZ7033Z-E1 AZ7033ZTR-E1 AZ7042Z-E1 AZ7042ZTR-E1 AZ7045Z-E1 AZ7045ZTR-E1 AZ7023RTR-E1 AZ7025RTR-E1 AZ7027RTR-E1 AZ7029RTR-E1 AZ7031RTR-E1 AZ7033RTR-E1 AZ7042RTR-E1 AZ7045RTR-E1
AZ70XX
E1: Lead Free Blank: Tin Lead TR: Tape and Reel or Ammo Blank: Bulk Package Z: TO-92 R: SOT-89-3
Package
Temperature Range
Detector Voltage 2.3V
Marking ID Tin Lead AZ7023Z AZ7023Z AZ7025Z AZ7025Z AZ7027Z AZ7027Z AZ7029Z AZ7029Z AZ7031Z AZ7031Z AZ7033Z AZ7033Z AZ7042Z AZ7042Z AZ7045Z AZ7045Z 7023R 7025R 7027R 7029R 7031R 7033R 7042R 7045R Lead Free AZ7023Z-E1 AZ7023Z-E1 AZ7025Z-E1 AZ7025Z-E1 AZ7027Z-E1 AZ7027Z-E1 AZ7029Z-E1 AZ7029Z-E1 AZ7031Z-E1 AZ7031Z-E1 AZ7033Z-E1 AZ7033Z-E1 AZ7042Z-E1 AZ7042Z-E1 AZ7045Z-E1 AZ7045Z-E1 E723 E725 E727 E729 E731 E733 E742 E745
Packing Type Bulk Ammo Bulk Ammo Bulk Ammo Bulk Ammo Bulk Ammo Bulk Ammo Bulk Ammo Bulk Ammo Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel
2.5V
2.7V
2.9V TO-92 -40 to 85oC 3.1V
3.3V
4.2V
4.5V 2.3V 2.5V 2.7V SOT-89-3 -40 to 85oC 2.9V 3.1V 3.3V 4.2V 4.5V
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Jul. 2005 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet VOLTAGE DETECTOR AZ70XX Absolute Maximum Ratings (Note 1)
Parameter Supply Voltage Power Dissipation (Package Limitations) Storage Temperature Range ESD (Machine Model) ESD (Human Body Mode) Symbol VCC PD TSTG ESD ESD Min -0.3 Max 18 Unit V mW
o
AZ70XX
TO-92 Package: 500 SOT-89-3 Package: 400 -65 150 500 5000
C
V V
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under"Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter Supply Voltage Operating Temperature Range Symbol VCC TOPR -40 Min Max 15 85 Unit V
oC
Jul. 2005 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet VOLTAGE DETECTOR Electrical Characteristics AZ70XX AZ70XX
Operating Conditions: TA=25oC unless otherwise specified.
Parameter Symbol Conditions AZ7023R/Z AZ7025R/Z RL=200 (Note 2) VOL 0.4V AZ7027R/Z AZ7029R/Z AZ7031R/Z AZ7033R/Z AZ7042R/Z AZ7045R/Z Low-Level Output Voltage Output Leakage Current Hysteresis Voltage Detect Voltage Temperature Coefficient Circuit Current at On Time Circuit Current at Off Time Minimum Operating Voltage VOL IOH VHYS VS/(VS ICCL ICCH VOPR VCC=VS(min)-0.05V RL=200 (Note 2) VCC=15V RL=200 (Note 2) T) RL=200 (Note 2) VCC=VS(min)-0.05V VCC=5.25V RL=200 (Note 2) VOL 0.4V VCC changed from 5.25V to VS(min)-0.05V, RL=1.0K, CL=100p (Note 3) VCC changed from VS(min)0.05V to 5.25V, RL=1.0K, CL=100p (Note 3) VCC=VS(min)-0.05V IOL Output Current at On Time IOL VCC=VS(min)-0.05V TA=-40 to 85 oC (Note 4) 16 TA=25oC (Note 4) 20 mA 30 50 0.01 300 30 0.8 500 50 Min 2.15 2.35 2.55 2.75 2.95 3.15 4.05 4.35 Typ 2.3 2.5 2.7 2.9 3.1 3.3 4.2 4.5 Max 2.45 2.65 2.85 3.05 3.25 3.45 4.35 4.65 0.4 0.1 100 V A mV % / oC A A V V Unit
Detecting Voltage
VS
L
Transmission Delay Time
tpHL
10
s
H Transmission Delay Time
tpLH
15
s
Note 2: See test circuit 1 and Figure 12. Note 3: See test circuit 2 and Figure 12. Note 4: See test circuit 3. Adjusting the regulative power source until the reading value of voltage meter V is 0.4V, the reading value of current meter A is defined as "Output Current at On Time".
Jul. 2005 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet VOLTAGE DETECTOR AZ70XX Electrical Characteristics (Continued) AZ70XX
A1
A2
1 VCC V1 AZ7029 GND 2 OUT 3 +
RL
10F
V2
Figure 4. Test Circuit 1
1 VCC
Input Pulse
RL + OUT 3 10F +5V
AZ7029 GND 2
CL
Figure 5. Test Circuit 2
1 V S(min)-0.05V + 10F V CC AZ7029 GND 2 OUT 3 A V
Figure 6. Test Circuit 3
Jul. 2005 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet VOLTAGE DETECTOR AZ70XX Typical Performance Characteristics AZ70XX
2.95
1200 1100
Minimum Operating Voltage (mV)
AZ7029
2.90
1000 900 800 700 600 500 400 -40
Detecting Voltage (V)
VS (VCC Rising)
2.85
AZ7029
VS-VHYS (VCC Falling)
2.80
2.75 -40
-20
0
20
40
O
60
80
-20
0
20
O
40
60
80
Temperature ( C)
Temperature ( C)
Figure 7. Detecting Voltage vs. Temperature
Figure 8. Minimum Operating Voltage vs. Temperature
70
100
Output Current at on time (mA)
60
Low-level Output Voltage (mV)
75
50
AZ7029
50
40
AZ7029
30
25
20
10 -40
-20
0
20
40
O
60
80
0 -40
-20
0
20
40
O
60
80
Temperature ( C)
Temperature ( C)
Figure 9. Output Current at on Time vs. Temperature
Figure 10. Low-level Output Voltage vs. Temperature
Jul. 2005 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet VOLTAGE DETECTOR AZ70XX Typical Performance Characteristics (Continued) AZ70XX
Time (s)
Figure 11. Output Voltage Dynamic Response when VCC Increases and Decreases
Operating Diagram
VCC VS VS -VHYS
VOUT
tpLH
tpHL
tpLH
Figure 12. AZ70XX Timing Waveform
Jul. 2005 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet VOLTAGE DETECTOR Operating Diagram (Continued) AZ70XX
3. During power-down, after a delay time of tpHL from the moment VCCVCC>VOPR for power-down operating. 5. After VCC falls below VOPR, the output is undefined.
AZ70XX
Figure 12 is a typical timing waveform for AZ70XX during power-up and temporary power-down period. Here is some explanations for AZ70XX's operation. 1. During power-up period, VOUT will remain undefined until VCC rises above VOPR (typically 0.8V). After that moment, the output will become valid and will be at its logic low state while VOPRVS, the VOUT will be at its logic high state. In general, VOUT is dependent upon the voltage that the pull up resistor connected to.
Typical Applications
VCC
R1 3.3k
VCC +5V
1 VCC AZ70XX GND 2 OUT 3
LED
R1 220
1 VCC AZ70XX GND 2 OUT
VCC
3 + C1 1 F RESET
CPU
GND
Figure 13. Low Voltage Indicator
Figure 14. CPU Resetting Circuit
Jul. 2005 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet VOLTAGE DETECTOR Mechanical Dimensions AZ70XX AZ70XX
TO-92
Unit: mm inch
1.100(0.043) 1.400(0.055) 3.430(0.135) MIN 0.360(0.014) 0.510(0.020)
3.300(0.130)
3.700(0.146)
0.000(0.000) 0.380(0.015) 1.600(0.063) MAX 4.400(0.173) 4.700(0.185)
4.300(0.169)
4.700(0.185)
0.380(0.015) 0.550(0.022)
1.270(0.050) TYP
2.440(0.096) 2.640(0.104)
Jul. 2005 Rev. 1. 3
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14.100(0.555) 14.500(0.571)
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet VOLTAGE DETECTOR AZ70XX Mechanical Dimensions (Continued) SOT-89-3 Unit: mm(inch) AZ70XX
1.630(0.064) 1.830(0.072) 1.400(0.055)*
4.400(0.173) 4.600(0.181)
0.000(0.000) 0.076(0.003)
1.400(0.055) 1.600(0.063)
R0.200(0.008)
3.950(0.156) 4.250(0.167) 1.200(0.047) 0.900(0.035) 2.300(0.091) 2.600(0.102)
3
10
0.360(0.014) 0.480(0.019) 3.000(0.118)
0.360(0.014) 0.480(0.019) 0.440(0.017) 0.560(0.022)
0.360(0.014) 0.440(0.017)
3
10
R0.150(0.006)
Jul. 2005 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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BCD Semiconductor (Taiwan) Company Limited
4F, 298-1 Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel: +886-2-2656-2808, Fax: +886-2-2656-2806
IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others.

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