AMS1117

1A Low Dropout Voltage Regulator

09/14/2012

www.advanced-monolithic.com

Phone (925) 443-0722

2

Fax (925) 443-0723

Pin Description (SOT223 and TO- 252 Package)

Pin #

Symbol

Description

1

ADJ / GND

Adjust Voltage: This pin is the inverting input of the error amplifier. This allows the

user to setup the output voltage by using two resistors. For fixed versions of

AMS1117, this pin is connected to GND.

2

VOUT

Output: This is the power output of the device.

3

VIN

Input Supply Voltage: The pin powers the internal control circuitry and the internal

power switch. Bypass VIN with at ceramic capacitor from this pin to ground.

Pin Configuration

SOT252-3L (Top View)

SOT223-3L (Top View)

Pin Description (8L SOIC Package)

Pin #

Symbol

Description

1

ADJ / GND

Adjust Voltage: This pin is the inverting input of the error amplifier. This allows the

user to setup the output voltage by using two resistors. For fixed versions of

AMS1117, this pin is connected to GND.

2, 3, 6,7

VOUT

Output: This is the power output of the device.

4

VIN

Input Supply Voltage: The pin powers the internal control circuitry and the internal

power switch. Bypass VIN with at ceramic capacitor from this pin to ground.

5

N/C

Not connect

8

N/C

Not connect

Pin Configuration

8L SOIC (Top View)