Pin Descriptions

Pin Configuration

SC70JW-8

(Top View)

OUT

VIN

LX

PGND

PGND

PGND

AGND

2

3

45

6

7

8

Pin #

Symbol

Function

1

EN

Enable pin.

2

OUT

Feedback input pin. This pin is connected either directly to the converter

output or to an external resistive divider for an adjustable output.

3

VIN

Input supply voltage for the converter.

4

LX

Switching node. Connect the inductor to this pin. It is internally connected to

the drain of both high- and low-side MOSFETs.

5

AGND

Non-power signal ground pin.

6, 7, 8

PGND

Main power ground return pins. Connect to the output and input capacitor

return.

AAT1146

Fast Transient 400mA Step-Down Converter

2

1146.2006.04.1.3