Design Specification
300mA Low Noise Dual LDO
PL2211
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.
FEATURES
Guaranteed 300mA load/ LDO
Ultra low output noise: 100µV
RMS
Low ground current: 200µA
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
TYPICAL APPLICATION
Power IC Ltd.
Version 1.0
-1-
www.picsemi.com
Mar 4, 2007
PICSEMI [ POWER IC LTD. ]
