AAT3123 Datasheet, PDF (2/18 Pages) List of Unclassifed Manufacturers – High Efficiency 1X/1.5X Fractional Charge Pump for White LED Applications

AAT3123/23A/24
High Efficiency 1X/1.5X Fractional Charge
Pump for White LED Applications
Pin Descriptions
Pin #
AAT3123/23A
(TSOPJW-12)
1
AAT3124
(QFN44-16)
10
2
9
3
7
4
6
5
5
6
4
7
1
8
16
9
15
10
14
11
12
12
11
2
3
8, 13
EP
Symbol
C2+
OUT
C1-
C1+
D4
D3
D2
D1
EN/SET
IN
GND
C2-
D5
D6
N/C
Function
Flying capacitor 2 positive terminal. Connect a 1µF capacitor
between C2+ and C2-.
Charge pump output. Requires 1µF capacitor connected
between this pin and ground.
Flying capacitor 1 negative terminal.
Flying capacitor 1 positive terminal. Connect a 1µF capacitor
between C1+ and C1-.
Current source output #4.
Current source output #3.
Current source output #2.
Current source output #1.
Control pin using S²Cwire serial interface.
Input power supply. Requires 1µF capacitor connected between
this pin and ground.
Ground.
Flying capacitor 2 negative terminal.
Current source output #5.
Current source output #6.
No connection.
Exposed paddle (bottom); connect to GND directly beneath
package.
Pin Configuration
TSOPJW-12
(Top View)
QFN44-16
(Top View)
C2+
OUT
C1-
C1+
D4
D3
1
12
2
11
3 _AAT3123 10
4 _AAT3123A 9
5
8
6
7
C2-
GND
IN
EN/SET
D1
D2
2
D2 ¹
D5 ²
D6 ³
D3 ⁴
AAT3124
12 _GND
11 _C2-
10 _C2+
9 _OUT
3123.2005.12.1.4