GS1117

Vishay Semiconductors

formerly General Semiconductor

Document Number 74802

www.vishay.com

20-Feb-02

1

New Product

800mA Low Dropout

Positive Adjustable Regulator

Description

The GS1117 is a low dropout three terminal regulator with

800mA output current capability. The output voltage is

adjustable with the use of a resistor divider. For fixed out-

put voltage versions, the output voltage is internally set at

2.5V, 2.85V, 3.3V or 5V. Dropout is guaranteed at a maxi-

mum of 1.4V at maximum output current. Its low dropout

voltage and fast transient response make it ideal for low

voltage microprocessor applications. Internal thermal limiting

provides protection against any overload condition that

would create excessive junction temperatures.

Applications

• SCSI-2 Active Terminator

• Post Regulator for Switching Supply

• Battery Chargers

• Constant-Current Regulators

• PC Add-On Card

Mechanical Data

TO-252 (DPAK) and SOT-223

High temperature soldering guaranteed:

260°C/10 seconds at terminals

Case outlines are on the back page

+

+

--

For

fixed

voltage

device

Thermal

Limit

Current

Amp

Current

Limit

GM

ADJ

GND

1.25V

55

µA

Functional Block Diagram

Features

• Dropout Voltage 1.2V at 800mA Output Current

• Fast Transient Response

• Line Regulation typically at 0.015%

• Load Regulation typically at 0.1%

• Internal thermal limiting

• Adjustable Output Voltage or Fixed 2.5V, 2.85V, 3.3V, 5V

• Standard 3-Pin Power Packages

TO-220AB

TO-263AB

GS1117CT

GS1117CM

GS1117CE

TO-252

(DPak)

1

2

3

1

2

3

1

2

3

GS1117CST

SOT-223

1

2

3

Pin Definition

1. Adjust/Gnd.