AAT3170 データシートの表示（PDF） - Analog Technology Inc

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AAT3170

High Current LED Flash Driver Charge Pump IC

Analog Technology Inc 

AAT3170

High Current LED Flash Driver Charge Pump IC

Pin Descriptions

Pin #

1, 12

2

3

4

5

6

7

8

Symbol

VIN

C1+

C1-

GND

F1

F2

EN/SET

CT

9

C2-

10

C2+

11

VOUT

EP

Function

Input power supply pin. Requires 4.7µF or larger ceramic bypass capacitor to ground.

Flying capacitor C1 positive terminal. Connect a 1µF ceramic capacitor between C1+ and C1-.

Flying capacitor C1 negative terminal.

Ground connection.

Current sink input #1.

Current sink input #2.

AS2Cwire serial interface control pin.

Flash timer control capacitor input. Connect a 100nF capacitor from CT to GND for a one sec-

ond timeout duration.

Flying capacitor C2 negative terminal.

Flying capacitor C2 positive terminal. Connect a 1µF ceramic capacitor between C2+ and C2-.

Charge pump output. Requires 2.2µF or larger ceramic capacitor connected between this pin

and ground.

Exposed paddle (bottom); connect to GND directly beneath package.

Pin Configuration

TDFN33-12

(Top View)

VIN 1

C1+ 2

C1- 3

GND 4

F1 5

F2 6

12 VIN

11 VOUT

10 C2+

9 C2-

8 CT

7 EN/SET

2

3170.2006.11.1.1

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