Design Specification

300mA Low Noise Dual LDO

PL2211

FEATURES

Guaranteed 300mA load/ LDO

Ultra low output noise: 100

µV

RMS

Low ground current: 200

µA

Very low dropout: 180mV @300mA

Zero shutdown supply current

TTL-logic-controlled independent enable input

Thermal and current limit protections

Low ESR capacitor compatibility to achieve

Ultra low droop load transient response

Ultra fast line transient response

Tiny 10pin 3mm x 3mm MLF (10L-TDLMF ) package

Fixed options 1.5V, 1.8V, 2.5V, 2.8V, 3.0V and 3.3V

APPLICATIONS

Cellular and cordless phones

Wireless LAN cards

Palmtop computers

Personal communication equipment

DESCRIPTION

The PL2211 is a dual CMOS low dropout linear regulator

with ultra-low-noise output, very low dropout voltage and

very low ground current.

The PL2211 operates from a 2.5V to 5.5V input voltage

range and delivers up to 300mA, with low dropout of 200

mV at 300mA. The other features of PL2211 include short-

circuit protection and thermal-shutdown protection.

The PL2211 is designed especially for battery-powered

portable devices. Its low noise feature makes PL2211 ideal

for noise-sensitive personal communication applications.

Other key application areas for PL2211 also include

palmtop computers, PCMCIA cards and WLAN cards.

The PL2211 has a special feature that if both EN pin is

enabled simultaneously the output of LDO2 delays 20us

from output of LDO1 which helps to minimize inrush

startup current.

The PL2211 is available in tiny 10pin 3mm x 3mm MLF

(10L-TDLMF) package with fixed output voltage versions.

TYPICAL APPLICATION

Power IC Ltd.

- 1 -

www.picsemi.com

Version 1.0

Mar 4, 2007