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PRELIMINARY INFORMATION

TCL1117-05 6/5/97

800mA LOW DROPOUT POSITIVE REGULATORS

ADJUSTABLE AND FIXED 2.85V, 3.30V, 5.00V

TCL1117

TCL1117-2.85

TCL1117-3.30

TCL1117-5.00

800mA LOW DROPOUT POSITIVE REGULATORS

ADJUSTABLE AND FIXED 2.85V, 3.30V, 5.00V

GENERAL DESCRIPTION

The TCL1117 is a low-dropout positive voltage regula-

tor (LDO) with 800mA output current capability. It is available

in fixed and adjustable output voltage versions, 2.85V (ac-

tive SCSI terminators), 3.30V and 5.00V. Output/reference

voltage accuracy is guaranteed to

±1.0%. Over-current

protection is integrated onto the chip. Dropout is specified

at 1.2V maximum at full rated output current and less than

1.0V at low loads (<100mA). The SOT-223 package makes

the TCL1117 especially attractive for tight physical layouts.

For stability, a 10

µF output capacitor is required. The

TCL1117 is an NPN-based design which has significantly

lower unused quiescent current than similar PNP-based

regulators.

PIN CONFIGURATIONS

ADJ/GND

IN

OUT

TAB IS V

OUT

FRONT VIEW

FRONT VIEW

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3

TYPICAL APPLICATION

FEATURES

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Space-saving SOT-223 Package

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Pin Compatible with Older Adjustable 3 Terminal

Regulators

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Adjustable or Fixed Voltages of 2.85V, 3.30V or 5.00V

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High Output Current ..................................... 800mA

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Guaranteed Dropout Voltage at Multiple Current

Levels

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Line Regulation (Max) ...................................... 0.2%

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Load Regulation (Max) ..................................... 0.4%

APPLICATIONS

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Active SCSI Terminators

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High Efficiency Linear Regulators

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Post Regulators for Switching Supplies

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Battery Chargers

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5V - 3.3V Linear Regulators

ORDERING INFORMATION

Part Number*

Package

Part Marking

TCL1117-ADJCDB

SOT-223-3

1117

TCL1117-2.85CDB

SOT-223-3

11172

TCL1117-3.30CDB

SOT-223-3

11173

TCL1117-5.00CDB

SOT-223-3

11175

TCL1117-ADJCEB

DDPAK-3

TCL1117-2.85CEB

DDPAK-3

TCL1117-3.30CEB

DDPAK-3

TCL1117-5.00CEB

DDPAK-3

*Ambient temperature range is determined by maximum operating

power dissipation and a maximum die temperature of 125

°C (see Power

Dissipation and Thermal Design Section).

TCL1117

TCL1117-2.85

TCL1117-3.30

TCL1117-5.00

SOT-223

3-Lead Package

DDPAK-3

10

µF

IN

GND

OUT

TCL1117-5.00

4.75V to 5.25V

22

µF

110

Ω

18 to 27

LINES

110

Ω

110

Ω

Active Terminator for SCSI-2 Bus

TelCom Semiconductor reserves the right to make changes in the circuitry and specifications of its devices.