 2002-2012 Microchip Technology Inc.

DS21380C-page 1

TC1269

Features

• Very Low Ground Current for Longer Battery Life

• Very Low Dropout Voltage

• 300mA Output Circuit

• High Output Voltage Accuracy

• Standard or Custom Output Voltages

• Power Saving Shutdown Mode

• Bypass Input for Ultra Quiet Operation

• Over Current and Over Temperature Protection

• Space-Saving MSOP Package

Applications

• Battery Operated Systems

• Portable Computers

• Medical Instruments

• Instrumentation

• Cellular/GSM/PHS Phones

• Linear Post-Regulator for SMPS

• Pagers

•Digital Cameras

Device Selection Table

*Other output voltages are available. Please contact Microchip

Technology Inc. for details.

Package Type

General Description

The TC1269 is a fixed output, high accuracy (typically

±0.5%) CMOS upgrade for older (bipolar) low dropout

regulators. Total supply current is typically 50

A at full

load (20 to 60 times lower than in bipolar regulators).

TC1269 key features include ultra low noise operation

(plus optional Bypass input); very low dropout voltage

(typically 240mV at full load), and fast response to step

changes in load. Supply current is reduced to 0.05

A

input is low.

The TC1269 incorporates both over temperature and

over current protection. The TC1269 is stable with an

output capacitor of only 1

F and has a maximum

output current of 300mA.

Typical Application

Part Number

Output*

Voltage

(V)

Package

Junction

Temp. Range

TC1269-2.5VUA

2.5

8-Pin MSOP -40°C to +125°C

TC1269-2.8VUA

2.8

8-Pin MSOP -40°C to +125°C

TC1269-3.0VUA

3.0

8-Pin MSOP -40°C to +125°C

TC1269-3.3VUA

3.3

8-Pin MSOP -40°C to +125°C

TC1269-5.0VUA

5.0

8-Pin MSOP -40°C to +125°C

8-Pin MSOP

SHDN

Bypass

NC

NC

GND

NC

TC1269

1

2

3

45

6

7

8

TC1269

1

2

3

4

6

7

8

470pF

(Optional)

Shutdown Control

(from Power

Control Logic)

C1

1

µF

NC

NC

GND

Bypass

NC

SHDN

+