AMS3108

Micropower 700mA Low Noise Fast Transient Response LDO

02/11/2010

www.advanced-monolithic.com

Phone (925) 443-0722

2

Fax (925) 443-0723

Pin Description (SOIC-8 EDP package)

Pin #

Symbol

Description

1

BYP

bypass the noise generated by the internal bandgap. This improves power supply

rejection ratio and output noise.

2

GND

Ground

3

GND

Ground

4

Input supply Voltage. It powers the internal control circuitry and the internal power

5

Output Voltage

6

ADJ

Provides feedback to error amplifier from the resistive divider that sets the output

voltage.

NC

No Connection

7

PG

Power Good pin. It is an open collector, active high output that indicates the status

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 should be

8

EN

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.

9

GND

Expose pad. Connected to PCB ground plane for good thermal dissipation.

Pin Configuration

SOIC-8 EDP (Top View)

PG

GND

BYP

9

GND

2

3

4

1

5

6

7

GND

8 EN

ADJ / NC