AAT3112(2004) 查看數據表（PDF） - Advanced Analogic Technologies

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AAT3112
(Rev.:2004)

500mA High Efficiency Charge Pump for White LED Flash Applications

Advanced Analogic Technologies 

AAT3112

500mA High Efficiency Charge Pump

for White LED Flash Applications

Pin Descriptions

Pin #

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

EP

Symbol

N/C

C2+

C2-

N/C

VIN

GND

EN2

N/C

EN1

GND

VIN

VOUT1

N/C

C1+

C1-

VOUT2

Function

No connect.

Flying capacitor 2 positive terminal. Connect 1µF capacitor between C2+ and C2-.

Flying capacitor 2 negative terminal.

No connect.

Input voltage. Connect to Pin 11.

Ground connection.

Enable pin. When connected high, Charge Pump 2 is enabled. When connected low, it

disables the charge pump.

No connect.

Enable pin. When connected high, Charge Pump 1 is enabled. When connected low, it

disables the charge pump.

Ground connection.

Input voltage. Connect to Pin 5.

Output pin for regulated output voltage. Bypass this pin to ground with a low ESR 10µF

capacitor.

No connect.

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

Flying capacitor 1 negative terminal.

Regulated output voltage 2. Must be connected to VOUT1 for higher current applications.

If used separately, bypass this pin to ground with a low ESR 10µF capacitor.

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

Pin Configuration

QFN33-16

(Top View)

N/C 1

C2+ 2

C2- 3

N/C 4

V 12 OUT1

V 11 IN

10 GND

9 EN1

2

3112.2004.12.1.2

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