AAT1153 데이터 시트보기 (PDF) - Advanced Analogic Technologies

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AAT1153

2A Step-Down Converter

Advanced Analogic Technologies 

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AAT1153

2A Step-Down Converter

Pin Descriptions

Pin #

1

2

3

4, 6

5

7, 8

9, 10

Symbol

EN

IN

AIN

AGND

FB/OUT

LX

PGND

EP

Function

Enable pin. Active high. In shutdown, all functions are disabled drawing <1μA supply current. Do not leave

EN floating.

Power supply input pin. Must be closely decoupled to AGND with a 2.2μF or greater ceramic capacitor.

Analog supply input pin. Provides bias for internal circuitry.

Analog ground pin

FB pin (AAT1153IDE-0.6): Adjustable version feedback input. Connect FB to the center point of the

external resistor divider. The feedback threshold voltage is 0.6V.

OUT pin (AAT1153IDE-1.8): Fixed version feedback input. Connect OUT to the output voltage, VOUT.

Switching node pin. Connect the output inductor to this pin.

Power ground pin

Power ground exposed pad. Must be connected to bare copper ground plane.

Pin Configuration

TDFN-10

(Top View)

EN 1

IN 2

AIN 3

AGND 4

FB/OUT 5

10 PGND

9 PGND

8 LX

7 LX

6 AGND

1. FB pin for the adjustable voltage version (AAT1153IDE-0.6), OUT pin for the fixed voltage version (AAT1153IDE-1.8).

2

www.analogictech.com

1153.2008.02.1.2

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