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NCP5426 LDO Regulator/Vibration Motor Driver
The NCP5426 series of fixed output, 150 mA low dropout linear regulators are designed to be an economical solution for a variety of applications. Each device contains a voltage reference unit, an error amplifier, a PNP power transistor, resistors for setting output voltage, an under voltage lockout on the input, an enable pin, and current limit and temperature limit protection circuits. The NCP5426 is designed for driving a vibration motor using ceramic capacitors on the output. The device is housed in the micro-miniature TSOP-5 surface mount package. The NCP5426 is available in output voltages of 1.2 V to 2.0 V in 0.1 V increments.
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5 1 TSOP-5 SN SUFFIX CASE 483
* * * * * * *
Wide Operating Voltage Range to 12 V Internally Set Output Voltages Enable Pin for On/Off Control UVLO on the Input Voltage with Hysteresis Current and Thermal Protection Compatible with Ceramic, Tantalum or Aluminum Electrolytic Capacitors Pb-Free Package is Available
PIN CONNECTIONS AND MARKING DIAGRAM
Enable GND N/C 1 2 3 (Top View) xxx = Specific Device Code A = Assembly Location Y = Year W = Work Week G = Pb-Free Package (Note: Microdot may be in either location) 5 Vin
xxxAYWG G
4
Vout
Typical Applications
* Vibration Motor Driver
Vin 5 UVLO Thermal Shutdown Driver w/ Current Limit 4
Vout
ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 7 of this data sheet.
Enable ON OFF 1
GND
2
This device contains 47 active transistors.
Figure 1. Internal Schematic
(c) Semiconductor Components Industries, LLC, 2006
1
February, 2006 - Rev. 5
Publication Order Number: NCP5426/D
NCP5426
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DETAILED PIN DESCRIPTION
Pin 1 2 3 4 5 Name Description Enable GND N/C The enable pin allows the user to control the output. A low signal disables the output and places the device into a low current standby mode. Ground pin. This pin is not connected to the device. Regulated output voltage. Input voltage. Vout Vin
MAXIMUM RATINGS
Rating
Symbol VMAX PA P
Value 12
Unit V
Max Voltage, All Pins
Power Dissipation to Air
150 600
mW mW C
Power Dissipation, Board Mounted
Operating and Storage Temperature Thermal Resistance
TA
-40 to 85 300 125
TJA TJ
C/W C
Junction Temperature
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.
ELECTRICAL CHARACTERISTICS (TA = 25C, for min/max values TA is the operating junction temperature that applies, VCC = 3.5 V, unless otherwise noted)
Characteristic Operating Voltage Operating Voltage Turn On, Iout = 30 mA, Increasing VCC Operating Voltage Turn Off, Iout = 30 mA, Decreasing VCC Operating Voltage Hysteresis, Iout = 30 mA Operating Current No Load Operating Current, VCC = 1.8 V, Enable High Operating Current, Enable Low Maximum Output Current, Vout = 0.95 *Vnom Overcurrent Protection, Vout = 0 V Load Regulation, Vin = 3.5 V, Iout 1.0 to 100 mA Line Regulation, Iout = 30 mA, Vin 3.0 to 5.0 V Ripple Rejection, Vin 3.5 V, f 120 Hz, Vpp 1.0 V, Iout 30 mA Temperature Shutdown VCC Low Detector Temperature Coefficient, Iout = 30 mA, T = -40 to 85C Vout Temperature Coefficient Enable Pin High Threshold Enable Pin Low Threshold Enable Pin Current, Ve = 1.6 V -1.3 V Output Voltage, Iout = 30 mA Vout 1.261 1.3 1.339 V Symbol VCC VCCON VCCOFF VCC(hyst) ICC ICC(uvlo) ICC(off) Iout(max) Iout(limit) Regload Regline RR Tstd DVCC H to L/DT DVo/DT Veh Vel le Min - - 2.0 400 - - - 150 - - - 55 - - - 1.6 - - Typ - 2.6 2.1 500 120 80 - - 270 30 10 70 150 200 100 - - 5.0 Max 12 2.8 2.2 600 240 160 0.1 - - 60 20 - - - - - 0.4 10 Unit V V V mV mA mA mA mA mA mV mV dB C ppm/C ppm/C V V mA
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NCP5426
20 16 LOAD REGULATION (mV) 12 8 4 0 -4 -8 -12 -16 -20 0 25 50 75 100 125 150 OUTPUT CURRENT (mA) Vin = 3.5 V Ve = 2.5 V Vout = 1.3 V Cout = 1.0 mF 1.4 1.2 OUTPUT VOLTAGE (V) 1.0 0.8 0.6 0.4 0.2 0 0 50 100 150 200 250 300 OUTPUT CURRENT (mA) Vin = 3.5 V Ve = 2.5 V Vout(nom) = 1.3 V
Figure 2. Load Regulation NCP5426
Figure 3. Current Limit NCP5426
140 138 QUIESCENT CURRENT (mA) 136 134 132 130 128 126 124 122 120 118 -50 -25 0 25 50
Vin = 3.5 V Iout = 0 mA Vout(nom) = 1.3 V Ve = Vin UVLO (V)
2.7 2.6 Vth ON 2.5 2.4 2.3 2.2 2.1 Vth OFF
75
100
125
2.0 -50
10
60
125
TEMPERATURE (C)
TEMPERATURE (C)
Figure 4. Quiescent Current vs. Temperature
Figure 5. Undervoltage Lockout vs. Temperature
80 RIPPLE REJECTION (dB) 70 60 50 40
Vin = 3.5 V Vout = 1.3 V Iout = 1.0 mA Cout = 1.0 mF Ve = 2.5 V
OUTPUT VOLTAGE DEVIATION (mV)
90
50
0 Iout = 1 mA to 150 mA
Iout, OUTPUT CURRENT (mA)
30 20 10 0 100 1k 10 k FREQUENCY (Hz) 100 k
150 Vin = 3.5 V Vout = 1.3 V Cin = 4.7 mF Cout = 4.7 mF 0 100 200 300 400 500 600 700 800 900 1000
1M
TIME (ms)
Figure 6. Ripple Rejection vs. Frequency
Figure 7. Load Transient Response
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NCP5426
4.00 7.00
ENABLE CURRENT (mA)
3.75
ENABLE CURRENT (mA)
6.75
3.50
6.50
3.25
Vin = 3.5 V Ve = 1.6 V Iout = 30 mA -25 0 50 75 100 125
6.25
Vin = 3.5 V Ve = 2.5 V Iout = 30 mA -25 0 50 75 100 125
3.00 -50
6.00 -50
TEMPERATURE (C)
TEMPERATURE (C)
Figure 8. Enable Current vs. Temperature
Figure 9. Enable Current vs. Temperature
0.90 0.80 LINE REGULATION (mV) 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0 3 6 Vin (V) 9 12 Vout = 1.3 V Iout = 30 mA Cout = 1 mF
Vin = 3.5 V Vout = 1.3 V 50 ms/div
1.3 V Vout 0 100 mA Iout 0
Cin = Cout = 4.7 mF
Figure 10. Line Regulation
Figure 11. Resistive Transient Response for Switching the Enable Pin, Rout - 13 Ohms
Vin = 3.5 V Vout = 1.3 V 100 ms/div
1.3 V Vout 0
50 mA Iout 0 mA
Cin = Cout = 4.7 mF
Figure 12. Transient Response for Switching the Enable Pin, Vibration Motor Load
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NCP5426
DEFINITIONS
Load Regulation Line Regulation
The change in output voltage for a change in output load current at a constant temperature and input voltage.
Dropout Voltage
The input/output differential at which the regulator output no longer maintains regulation against further reductions in input voltage. Measured when the output drops 2.0% below its nominal. The junction temperature, load current, and minimum input supply requirements affect the dropout level.
Output Noise Voltage
The change in output voltage for a change in input voltage. The measurement is made under conditions of low dissipation or by using pulse technique such that the average chip temperature is not significantly affected.
Line Transient Response
Typical over and undershoot response when input voltage is excited with a given slope.
Thermal Protection
This is the integrated value of the output noise over a specified frequency range. Input voltage and output load current are kept constant during the measurement. Results are expressed in mVRMS or nV Hz.
Quiescent Current
Internal thermal shutdown circuitry is provided to protect the integrated circuit in the event that the maximum junction temperature is exceeded. When activated at typically 150C, the regulator turns off. This feature is provided to prevent failures from accidental overheating.
Maximum Package Power Dissipation
The current which flows through the ground pin when the regulator operates without a load on its output: internal IC operation, bias, etc. When the LDO becomes loaded, this term is called the Ground current. It is actually the difference between the input current (measured through the LDO input pin) and the output current.
The power dissipation level at which the junction temperature reaches its maximum operating value, i.e. 125C.
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NCP5426
APPLICATIONS INFORMATION The following description will assist the system designer to correctly use the NCP5426 in an application. The NCP5426 is designed specifically for use with inductive loads, typically Vibration Motors. The LDO is capable of using ceramic and tantalum capacitors. Please refer to Figure 13 for a typical system schematic.
Input Decoupling
The maximum dissipation the package can handle is given by:
T *TA PD + J(max) RqJA
A capacitor, C1, is necessary on the input for normal operation. A ceramic or tantalum capacitor with a minimum value of 1.0 mF is required. Higher values of capacitance and lower ESR will improve the overall line and load transient response.
Output Decoupling
TJ is not recommended to exceed 125C. The NCP5426 can dissipate up to 400 mW @ 25C. The power dissipated by the NCP5426 can be calculated from the following equation:
Ptot + [Vin * IGND (Iout)] ) [Vin * Vout] * Iout
or
P ) Vout * Iout VinMAX + tot IGND ) Iout
A capacitor, C2, is required for the NCP5426 to operate normally. A ceramic or tantalum capacitor will suffice. The selection of the output capacitor is dependant upon several factors: output current, power up and down delays, inductive kickback during power up and down. It is recommended the output capacitor be as close to the output pin and ground pin for the best system response.
Enable Pin
If a 150 mA output current is needed then the ground current is extracted from the data sheet curves: 200 mA @ 150 mA. For an NCP5426SN18T1 (1.8 V), the maximum input voltage will then be 4.4 V, good for a 1 Cell Li-ion battery.
Hints
The enable pin will turn on or off the regulator. The enable pin is active high. The internal input resistance of the enable pin is high which will keep the current very low when the pin is pulled high. A low threshold voltage permits the NCP5426 to operate directly from microprocessors or controllers.
Thermal
Please be sure the Vin and GND lines are sufficiently wide. When the impedance of these lines is high, there is a chance to pick up noise or cause the regulator to malfunction. Set external components, especially the output capacitor, as close as possible to the circuit, and make leads as short as possible.
ON OFF Enable GND N/C Vout C2 Vin Vibration Motor C1 VCC
As power across the NCP5426 increases, it might become necessary to provide some thermal relief. The maximum power dissipation supported by the device is dependent upon board design and layout. Mounting pad configuration on the PCB, the board material and the ambient temperature effect the rate of junction temperature rise for the part. This is stating that when the NCP5426 has good thermal conductivity through the PCB, the junction temperature will be relatively low with high power dissipation applications.
Figure 13. Typical Applications Circuit for Driving a Vibration Motor
VCC
VCCON VCCOFF
VCCHYST
Vout Resistive Load
Vout Motor Load
Figure 14. Timing Diagram
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NCP5426
ORDERING INFORMATION
Device NCP5426SN13T1 NCP5426SN13T1G NCP5426SN13T2 NCP5426SN13T2G 1.3 LDZ Nominal Output Voltage* Marking Package TSOP-5 TSOP-5 (Pb-Free) TSOP-5 TSOP-5 (Pb-Free) 3000 / Tape & Reel Shipping
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. *Contact your ON Semiconductor sales representative for other Output Voltage options.
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NCP5426
PACKAGE DIMENSIONS
THIN SOT-23-5/TSOP-5/SC59-5 SN SUFFIX CASE 483-02 ISSUE E
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH THICKNESS. MINIMUM LEAD THICKNESS IS THE MINIMUM THICKNESS OF BASE MATERIAL. 4. A AND B DIMENSIONS DO NOT INCLUDE MOLD FLASH, PROTRUSIONS, OR GATE BURRS. MILLIMETERS MIN MAX 2.90 3.10 1.30 1.70 0.90 1.10 0.25 0.50 0.85 1.05 0.013 0.100 0.10 0.26 0.20 0.60 1.25 1.55 0_ 10 _ 2.50 3.00 INCHES MIN MAX 0.1142 0.1220 0.0512 0.0669 0.0354 0.0433 0.0098 0.0197 0.0335 0.0413 0.0005 0.0040 0.0040 0.0102 0.0079 0.0236 0.0493 0.0610 0_ 10 _ 0.0985 0.1181
D
5 1 2 4 3
S
B
L G A J C 0.05 (0.002) H K M
DIM A B C D G H J K L M S
SOLDERING FOOTPRINT*
1.9 0.074
0.95 0.037
2.4 0.094 1.0 0.039 0.7 0.028
SCALE 10:1
mm inches
*For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.
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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NCP5426/D

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