LD39300 Datasheet, PDF (1/17 Pages) STMicroelectronics – Ultra low drop BICMOS voltage regulator

LD39300
Ultra low drop BICMOS voltage regulator
Feature summary
■ 3A Guaranteed output current
■ Ultra low dropout voltage (200mV typ. @ 3A
load, 40mV typ. @600mA load)
■ Very low quiescent current (1.2mA typ. @ 3A
load, 1µA max @ 25°C in off mode)
■ Logic-controlled electronic shutdown
■ Current and thermal internal limit
■ ±1.5% Output voltage tolerance @ 25°C
■ Fixed and ADJ output voltages: 1.22V, 1.8V,
2.5V, 3.3V, ADJ. (*see order code)
■ Temperature range: -40 to 125°C
■ Fast dynamic response to line and load
changes
■ Stable with ceramic capacitor (see paragraph
7.1, 7.2, 7.3)
■ Available in PPAK and DPAK
Typical application
■ Microprocessor power supply
■ DSPs power supply
■ Post regulators for switchin suppliers
■ High efficiency linear regulator
PPAK
DPAK
Description
The LD39300 is a fast ultra low drop linear
regulator which operates from 2.5V to 6V input
supply.
A wide range of output options are available. The
low drop voltage, low noise, and ultra low
quiescent current make it suitable for low voltage
microprocessor and memory applications. The
device is developed on a BiCMOS process which
allows low quiescent current operation
independently of output load current.
Order codes
Part numbers
DPAK
LD39300DT12-R
LD39300DT18-R
LD39300DT25-R
LD39300DT33-R
PPAK
LD39300PT18-R
LD39300PT25-R
LD39300PT33-R
LD39300PT-R
January 2007
Rev. 1
Output voltage
1.22V
1.8V
2.5V
3.3V
ADJ From 1.22 to 5.0V
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