© 2002 Microchip Technology Inc.

DS21375B-page 1

TC1264

Features

• Very Low Dropout Voltage

• 800mA Output Current

• High Output Voltage Accuracy

• Standard or Custom Output Voltages

• Over Current and Over Temperature Protection

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: 1.8, 2.5, 3.0, 3.3.

Other output voltages are available. Please contact Microchip

Technology Inc. for details.

Package Type

General Description

The TC1264 is a fixed output, high accuracy (typically

±0.5%)

CMOS

low

dropout

regulator.

Designed

specifically for battery-operated systems, the TC1264’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).

TC1264 key features include ultra low noise operation,

very low dropout voltage (typically 450mV at full load),

and fast response to step changes in load.

The TC1264 incorporates both over temperature and

over current protection. The TC1264 is stable with an

output capacitor of only 1

µF and has a maximum

output current of 800mA. It is available in 3-Pin

SOT-223, 3-Pin TO-220 and 3-Pin DDPAK packages.

Typical Application

Part Number

Package

Junction

Temp. Range

TC1264-xxVDB

3-Pin SOT-223

-40°C to +125°C

TC1264-xxVAB

3-Pin TO-220

-40°C to +125°C

TC1264-xxVEB

3-Pin DDPAK

-40°C to +125°C

GND

FRONT VIEW

FRONT VIEW

1

1

2

3

3

2

TAB IS GND

TC1264

TC1264

TC1264

3-Pin TO-220

TAB IS GND

3-Pin SOT-223

3-Pin DDPAK

1

2

3

TC1264

C1

1

µF

GND

800mA Fixed Output CMOS LDO