AMS3132
3A Fast Transient Linear Regulator
Pin Description (TO-263 5-Pin Package)
Pin #
Symbol
Description
Enable pin. It controls the electrical on/off of the device. When connected to logic
low, the device shuts off and consumes less than 1µA of current. Logic high will
resume normal operation.
EN
Power Good pin. It is an open collector, active high output that indicates the
status of the output voltage. When output voltage (VOUT) exceeds the PG trip
threshold, the PG pin goes in to a high impedance state. When the device is out
of regulation or shutdown, the PG pin is pulled low. A 10KΩ to 1MΩ resistor
1
PG
VIN
should be connected from PG to VOUT
.
Input supply Voltage. It powers the internal control circuitry and the internal power
switch. Bypass VIN with at ceramic capacitor from this pin to ground.
2
3
4
GND
VOUT
Ground connection.
Output Voltage
Provides feedback to error amplifier from the resistive divider that sets the output
voltage.
ADJ
Power Good pin. It is an open collector, active high output that indicates the
status of the output voltage. When output voltage (VOUT) exceeds the PG trip
threshold, the PG pin goes in to a high impedance state. When the device is out
of regulation or shutdown, the PG pin is pulled low. A 10KΩ to 1MΩ resistor
5
PG
should be connected from PG to VOUT
.
Pin Configuration
02/11/2010
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