GS1117
New Product
Vishay Semiconductors
formerly General Semiconductor
800mA Low Dropout
Positive Adjustable Regulator
SOT-223
TO-252
(DPak)
TO-220AB
TO-263AB
(D2Pak)
1
2
3
2
3
2
3
1
1
3
2
1
GS1117CST
GS1117CE
GS1117CT
GS1117CM
Pin Definition
Description
1. Adjust/Gnd.
2. Vout (tab)
3. Vin
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.
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
Applications
• SCSI-2 Active Terminator
• Post Regulator for Switching Supply
• Battery Chargers
• Adjustable Output Voltage or Fixed 2.5V, 2.85V, 3.3V, 5V
• Standard 3-Pin Power Packages
• Constant-Current Regulators
• PC Add-On Card
Functional Block Diagram
VIN
Mechanical Data
Case: TO-220AB, TO-263AB (D2PAK),
TO-252 (DPAK) and SOT-223
Current
Amp
+
--
GM
+
VREF
1.25V
High temperature soldering guaranteed:
260°C/10 seconds at terminals
Thermal
Limit
Current
Limit
55µA
VOUT
Case outlines are on the back page
For
fixed
voltage
device
ADJ
GND
Document Number 74802
20-Feb-02
www.vishay.com
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