NCP4632
3A, Low Voltage, Low
Dropout Linear Voltage
Regulator with Reverse
Current Protection
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MARKING
The NCP4632 is a CMOS Linear voltage regulator with high output
current capability (up to 3 A). This device can provide output voltages
as low as 0.8 V while maintaining a low dropout voltage of 510 mV
typ. at full load. The NCP4632 is designed to draw only 350 mA of
supply current and less than 1 mA in standby mode to minimize current
consumption for battery operated applications. The device has a high
accuracy output voltage of 1% along with soft−start and reverse
current protection circuits to protect the device and the application.
The NCP4632 is available in a Pb−Free DPAK−5 package in both
fixed and adjustable output voltage options. The output voltage for the
fixed options can be modified in 0.1 V steps from 0.8 V to 4.2 V
Please contact your sales office for any additional fixed voltage
outputs to those already listed.
DIAGRAMS
E1Jxx1
yy
zz
DPAK−5
CASE 369AE
1 2 3 4 5
Features
xx
YY
= Specific Device Code
• Operating Input Voltage Range: 1.6 V to 5.25 V
= B − Without Active Discharge
= D − With Active Discharge
= Lot Number
• Output Voltage Range: 0.8 to 4.5 V (0.1 V steps for fixed options)
• Supply current: Typical Operation Mode − 350.0 mA
zz
Standby Mode
− 1.0 mA
• Dropout Voltage:
150 mV Typ. at I
510 mV Typ. at I
= 1 A, V
= 3 A, V
= 2.5 V
= 2.5 V
OUT
OUT
OUT
ORDERING INFORMATION
OUT
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
•
1% Output Voltage Accuracy
• Line Regulation 0.15%/V Typ.
• Current Fold Back Protection Typ. 220 mA
• Stable with Ceramic Capacitors
• Available in DPAK−5 Package (TO252−5)
• These are Pb−Free Devices
Typical Applications
• Battery Powered Equipments
• Portable Communication Equipments
• Cameras, VCRs and Camcorders
• Home appliances
NCP4632 (Fixed)
VIN
NCP4632 (Adj)
VOUT
VIN
VIN
VOUT
VIN
VOUT
VOUT
C2
R1
VADJ
SENSE
CE
CE
C2
10m
C1
10m
C1
10m
GND
GND
R2 10m
Figure 1. Typical Application Schematics
1
© Semiconductor Components Industries, LLC, 2012
Publication Order Number:
June, 2012 − Rev. 0
NCP4632/D