© 2002 Microchip Technology Inc.

DS21357B-page 1

TC1108

Features

• Extremely Low Supply Current (50

µA, Typ.)

• Very Low Dropout Voltage

• 300mA 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: 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 TC1108 is a fixed output, high accuracy (typically

±0.5%) CMOS low dropout regulator. Total supply

current is typically 50

µA at full load (20 to 60 times

lower than in bipolar regulators).

TC1108 key features include ultra low noise operation,

very low dropout voltage (typically 240mV at full load),

and fast response to step changes in load.

The TC1108 incorporates both over temperature and

over current protection. The TC1108 is stable with an

output capacitor of only 1

µF and has a maximum

output current of 300mA. It is available in a SOT-223

package.

Typical Application

Part Number

Package

Junction

Temp. Range

TC1108-xxVDB

3-Pin SOT-223

-40°C to +125°C

SOT-223

3

2

1

GND

TC1108VDB

TC1108

1

2

3

C1

1

µF

GND

+

300mA CMOS LDO