PAM3131 Datasheet, PDF (1/14 Pages) Power Analog Micoelectronics – 3A Adjustable Low Voltage Low Dropout CMOS Regulator

PAM3131
3A Adjustable Low Voltage
Low Dropout CMOS Regulator
Key Features
n Low-Dropout Regulator Supports Input
Voltages Down to 1.4V
n Low Dropout Voltage: 300mV@ 3A
n Output Voltage Adjustable from 0.9V-3.3V
n Stable with a Ceramic Output Capacitor
of 1.0μF or Higher
n Low Quiescent Current
n Current Limit
n Over Temperature Shutdown
n Short Circuit Current Protection
n Low Temperature Coefficient
n Standard TO-263 and PSOP-8 (Exposed
Pad) Packages
n Pb-Free Package
Applications
n DSP, FPGA, and Microprocessor Power
Supplies
n 1.2V Core Voltage for DSPs
n SATA Power Supply
n LCD TV/ Monitors
n Wireless Devices
n Communication Devices
n Portable Electronics
n Post Regulator for SMPS
Description
The PAM3131 is a 3A CMOS adjustable LDO
regulator that features a low quiescent current,
ultra low input, output, and dropout voltages, as
well as over temperature protection. It is available
in TO-263 and PSOP-8 (Exposed Pad) packages.
The output voltage is adjustable from 0.9V to
3.3V. The PAM3131 is stable with a ceramic
output capacitor of 1.0μF or higher.
This family of regulators can provide either a
stand-alone power supply solution or act as a post
regulator for switch mode power supplies. They
are particularly well suited for applications
requiring low input and output voltages.
Typical Application
R_P 10kΩ
VIN
VIN
VOUT
VOUT ^VIN
PWRGD
VIN
VOUT
PAM3131
EN
R1
PAM3131
EN
VOUT
R1
C1
4.7μF
GND ^ADJ
C2
2.2μF
R2
C1
4.7μF
GND ^ADJ
C2
2.2μF
R2
Power Analog Microelectronics,Inc
www.poweranalog.com
1
10/2010 Rev1.1