SGM3124 Datasheet, PDF (12/17 Pages) SG Micro Corp – White LED Charge Pump Current Source with PWM Brightness Control

SGM3124
White LED Charge Pump Current
Source with PWM Brightness Control
APPLICATION INFORMATION
Typical Application of a Smart Phone Display with Resistors Connected In Parallel
If more than 30mA of output current is needed, then the input pins to the current sinks can be connected in parallel as
shown in the following application figure. This method can also be used to connect a LC display with only two
connections for the white LEDs.
C2
0.47µF
C1
0.47µF
C2- C1-
C1+ C2+
Li-ion
CIN
VIN
VOUT
Battery
1µF
EN1 SGM3124 _D1
1µF
D2
EN2
D3
ISET GND PGND
SG Micro Corp
www.sg-micro.com
12