GS1085 Datasheet, PDF (1/6 Pages) Vishay Siliconix – 3A Low Dropout Positive Adjustable Regulator

TO-252
(DPak)
GS1085
New Product
Vishay
formerly General Semiconductor
3A Low Dropout Positive Adjustable Regulator
TO-220AB
TO-263AB
(D²Pak)
23
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GS1085CE
GS1085CT
Pin Definition
1. Adjust/Gnd.
2. Vout (tab)
3. Vin
3
2
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Features
• Dropout Voltage 1.3V at 3A Output Current
• Fast Transient Response
• Line Regulation typically at 0.015%
• Load Regulation typically at 0.1%
• Internal thermal and current limiting
• Adjustable Output Voltage or Fixed 1.8V, 2.5V, 3.3V
• Standard 3-Pin Power Packages
Functional Block Diagram
+
GM
+ _VREF ^--
1.25V
55µA
Current
Amp
Thermal
Limit
Current
Limit
ADJ
VIN
For
fixed
voltage
device
VOUT
GND
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GS1085CM
Description
The GS1085 is a low dropout three terminal regulator with
3A output current capability. The output voltage is
adjustable with the use of a resistor divider. For fixed output
voltage versions, the output voltage is internally set at
1.8V, 2.5V, or 3.3V. Dropout is guaranteed at a maximum
of 1.4V at maximum output current. Its low dropout voltage
and fast transient response make it ideal for low voltage
microprocessor applications. Internal current and thermal
limiting provides protection against any overload condition
that would create excessive junction temperatures.
Applications
• Post Regulator for Switching Supply
• Microprocessor Power Supplies
• Constant-Current Regulators
• Motherboard I/O Power Supplies
Mechanical Data
Case: TO-220AB, TO-263AB (D²PAK),
TO-252 (DPAK)
High temperature soldering guaranteed:
260°C/10 seconds at terminals
Case outlines are on the back page
Document Number 74821
24-May-02
www.vishay.com
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