AAT1150

1MHz 1A Step-Down DC/DC Converter

2

1150.2006.09.1.5

Pin Descriptions

Pin Configuration

MSOP-8

(Top View)

LX

PGND

LX

VP

FB

SGND

EN

VCC

1

2

3

4

8

7

6

5

Pin #

Symbol

Function

1

FB

Feedback input pin. This pin must be connected to the converter’s output. It is

used to set the output of the converter to regulate to the desired value.

2

SGND

Signal ground.

3

EN

Enable input pin. When connected high, the AAT1150 is in normal operation.

When connected low, it is powered down. This pin should not be left floating.

4

VCC

Power supply. It supplies power for the internal circuitry.

5

VP

Input supply voltage for converter power stage.

6, 7

LX

Inductor connection pins. These pins should be connected to the output

inductor. Internally, Pins 6 and 7 are connected to the drains of the P-chan-

nel switch and N-channel synchronous rectifier.

8

PGND

Power ground return for the output stage.