Preliminary Datasheet

LP2201

LP2201 – Ver. 1.2Datasheet

Jul.-2008

Page 1 of 8

200mA,Dual Channel Ultra-Fast CMOS LDO Regulator

General Description

The LP2201 is a dual channel, low noise, and low

dropout regulator sourcing up to 250mA at each

channel. The range of output voltage is from 1.2V to

3.6V by operating from 2.5V to 5.5V input.

LP2201 offers 2% accuracy, extremely low dropout

voltage (80mV @ 150mA), and extremely low ground

current, only 25µA per LDO. The shutdown current is

near zero current which is suitable for battery-power

devices. Other features include current limiting, over

temperature, output short circuit protection.

LP2201 is short circuit thermal folded back protected.

LP2201 lowers its OTP trip point from 165°C to

110°C when output short circuit occurs (VOUT <

0.4V) providing maximum safety to end users.

LP2201 can operate stably with very small ceramic

output capacitors, reducing required board space and

component cost. LP2201 is available in fixed output

voltages in the SOT-23-6 package.

Ordering Information

LP2201 -

□ □ □ □

□

F: Pb-Free

Package Type

B6: SOT23-6

Out1/Out2 Voltage Type

18/28: 1.8V/2.8V

18/33: 1.8V/3.3V

25/28: 2.5V/2.8V

28/28: 2.8V/2.8V

28/12: 2.8V/1.2V

28/33: 2.8V/3.3V

30/30: 3.0V/3.0V

30/33: 3.0V/3.3V

33/33: 3.3V/3.3V

Typical Application Circuit

1uF

1uF

Chip Enable

1uF

VIN

LP2201

1

4

5

6

2

3

EN1

Vout2

GND

Vout1

Vin

EN2

VOUT1

VOUT2

Features

Wide Operating Voltage Ranges : 2.5V to 5.5V 

Low-Noise for RF Application

High PSRR 65dB at 1kHz

No Noise Bypass Capacitor Required 

Fast Response in Line/Load Transient

TTL-Logic-Controlled Shutdown Input

Dual LDO Outputs (200mA/200mA)

High Output Accuracy 2%

Ultra-low Quiescent Current 27uA

Thermal Shutdown Protection

Thermal Shutdown Protection

Tiny SOT-23-6 Package

RoHS Compliant and 100% Lead (Pb)-Free

Applications

CDMA/GSM Cellular Handsets

Smart mobile phone

Battery-Powered Equipment

DSC Sensor

Wireless Card

Pin Configurations

Marking Information

Please see website.

SOT23-6 (Top View)