© 2002 Microchip Technology Inc.

DS21356B-page 1

TC1107

Features

• Extremely Low Supply Current (50

µA, Typ.)

• Very Low Dropout Voltage

• 300mA Output Current

• 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 Option

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.

General Description

The TC1107 is a fixed output, high accuracy (typically

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

regulators. Total supply current is typically 50

µAat full

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

TC1107 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

µA

input is low.

The TC1107 incorporates both over temperature and

over current protection. The TC1107 is stable with an

output capacitor of only 1

µF and has a maximum

output current of 300mA.

Typical Application

Package Type

Part Number

Package

Junction

Temp. Range

TC1107-xxVOA

8-Pin SOIC

-40°C to +125°C

TC1107-xxVUA

8-Pin MSOP

-40°C to +125°C

TC1107

1

2

3

4

5

6

7

8

470pF

(Optional)

Shutdown Control

(from Power Control Logic)

C1

1

µF

GND

NC

Bypass

NC

NC

SHDN

+

8-Pin SOIC

1

2

3

4

5

6

7

8

NC

SHDN

GND

NC

Bypass

NC

TC1107VOA

8-Pin MSOP

1

2

3

4

5

6

7

8

NC

SHDN

GND

NC

Bypass

NC

TC1107VUA