4-127

TELCOM SEMICONDUCTOR, INC.

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TC55 Series

FEATURES

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Very Low Dropout Voltage .... 120mV typ at 100mA

380mV typ at 200mA

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High Accuracy Output Voltage ........................

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Wide Output Voltage Range .................... 2.1V-6.0V

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Low Power Consumption ................... 1.1

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Low Temperature Drift ...................

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Excellent Line Regulation ..................... 0.2%/V Typ

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Package Options .................................... SOT-23A-3

SOT-89-3

TO-92

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Short Circuit Protected

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Standard 3.0V, 3.3V and 5.0V Output Voltages

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Custom Voltages Available from 2.1V to 6.0V in

0.1V Steps.

APPLICATIONS

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Battery-Powered Devices

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Cameras and Portable Video Equipment

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Pagers and Cellular Phones

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Solar-Powered Instruments

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Consumer Products

GENERAL DESCRIPTION

The TC55 Series is a collection of CMOS low dropout

positive voltage regulators which can source up to 250mA of

current with an extremely low input-output voltage differen-

tial of 380mV.

The low dropout voltage combined with the low current

consumption of only 1.1

µA makes this part ideal for battery

operation. The low voltage differential (dropout voltage)

extends battery operating lifetime. It also permits high cur-

The circuit also incorporates short-circuit protection to

ensure maximum reliability.

LOW DROPOUT POSITIVE VOLTAGE REGULATOR

Output Voltage:

Ex: 21= 2.1V; 60 = 6.0V

Extra Feature Code: Fixed: 0

Tolerance:

1 =

±1.0% (Custom)

2 =

±2.0% (Standard)

Temperature: E: – 40

°C to +85°C

Package Type and Pin Count:

CB: SOT-23A-3 (Equivalent to EIAJ (SC-59))

MB: SOT-89-3

ZB: TO-92-3

Taping Direction:

Standard Taping

Reverse Taping

No suffix: TO-92 Bulk

PART CODE

TC55 RP XX X X X XX XXX

ORDERING INFORMATION

PIN CONFIGURATIONS

FUNCTIONAL BLOCK DIAGRAM

VIN

VOUT

GND

Short-circuit

Protection

Voltage

Reference

TC55-20 11/8/96

13

2

VIN

VIN

VOUT

VOUT

GND

GND

TC55

TC55

TC55

1

1

2

3

3

2

*SOT-23A-3

SOT-89-3

TO-92

*SOT-23A-3 is equivalent to EIAJ (SC-59)