© 2002 Microchip Technology Inc.

DS21374B-page 1

TC1263

Features

• Very Low Dropout Voltage

• 500mA Output Current

• High Output Voltage Accuracy

• Standard or Custom Output Voltages

• Over Current and Over Temperature Protection

• SHDN Input for Active Power Management

• ERROR Output Can Be Used as a Low Battery

Detector (SOIC only)

Applications

• Battery Operated Systems

• Portable Computers

• Medical Instruments

• Instrumentation

• Cellular/GSM/PHS Phones

• Linear Post-Regulators for SMPS

• Pagers

Device Selection Table

NOTE: xx indicates output voltages.

Available Output Voltages: 2.5, 2.8, 3.0, 3.3, 5.0.

Other output voltages are available. Please contact Microchip

Technology Inc. for details.

Package Type

General Description

The TC1263 is a fixed output, high accuracy (typically

±0.5%)

CMOS

low

dropout

regulator.

Designed

specifically for battery-operated systems, the TC1263’s

CMOS construction eliminates wasted ground current,

significantly extending battery life. Total supply current

is typically 80

µA at full load (20 to 60 times lower than

in bipolar regulators).

TC1263 key features include ultra low noise operation,

very low dropout voltage (typically 350mV at full load),

and fast response to step changes in load.

The TC1263 incorporates both over temperature and

over current protection. The TC1263 is stable with an

output capacitor of only 1

µF and has a maximum

output current of 500mA. It is available in 8-Pin SOIC,

5-Pin TO-220 and 5-Pin DDPAK packages.

Typical Application

Part Number

Package

Junction

Temp. Range

TC1263-xxVOA

8-Pin SOIC

-40°C to +125°C

TC1263-xxVAT

5-Pin TO-220

-40°C to +125°C

TC1263-xxVET

5-Pin DDPAK

-40°C to +125°C

FRONT VIEW

1 2

3

TAB IS GND

TC1263

1

2

3

4

8

7

6

5

TC1263

NC

SHDN

8-Pin SOIC

GND

NC

BYPASS

5-Pin DDPAK

TC1263

5-Pin TO-220

TAB IS GND

1 2 3 4 5

4

5

ERROR

TC1263

1

µF

GND

SHDN

SHDN

+

500mA Fixed Output CMOS LDO with Shutdown