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| GM1117_1 Datasheet, PDF (1/10 Pages) Gamma Microelectronics Inc. – 1A LOW DROPOUT PRECISION VOLTAGE REGULATOR | |||
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GM1117
1A LOW DROPOUT
PRECISION VOLTAGE REGULATOR
Description
The GM1117 is a positive low dropout
regulator and is available in an adjustable
version and fixed output voltage from 1.5V to
5.0V. All internal circuitry is designed to
operate down to 800mV input to output
differential and the dropout voltage is fully
specified as a function of load current. On chip
trimming adjusts the reference/output voltage
to within ± 1%. Current limit is also trimmed in
order to minimize the stress on both the
regulator and the power source circuitry under
overloaded conditions.
Features
 Adjustable or Fixed Output
 Output Current of 1.0A
 Dropout Voltage 1.5V max @ 1.0A
 Line Regulation 0.2% max.
 Load Regulation 0.4% max.
 Fast Transient Response
 Current Limit Protection
 Thermal Shutdown Protection
Application
High Efficiency Linear Regulators
Post Regulators for Switching Supplies
Microprocessor Supply
Battery Powered Equipment
Reference Voltage Sources
Hard Drive Controllers
Battery Chargers
Adjustable Power Supply
Typical Application Circuits
VIN
GM1117
C1
10µF
VOUT
VIN
GM1117-x.x
R1
133â¦
C2
C1
R2
10µF
232â¦
10µF
VOUT
C2
10µF
Adjustable Regulator
VOUT
=1.25V
(
1+
R2
R1
)
Fixed Output Voltage Regulator
www.gammamicro.com.tw 1
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