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| SGM3131 Datasheet, PDF (8/13 Pages) SG Micro Corp – Driver with Low Dropout Current Source | |||
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SGM3131
TYPICAL APPLICATION
120mA 4-Channel Charge Pump White LED
Driver with Low Dropout Current Source
CFLY
1μF
CFLY
1μF
Li-ion +
Battery
12 11 10 9
C2N C1N C1P C2P
13 VIN
CINPulse
1μF
Input
15
EN
VOUT 8
SGM3131 LED1 6
LED2 5
1 ISET
14 AGND
PGND
LED3 4
LED4 3
RSET
7
COUT
1µF
Figure 1. For 4-WLEDs Application Circuit
CFLY
1μF
CFLY
1μF
RSET
Li-ion +
Battery
12 11 10 9
C2N C1N C1P C2P
1 ISET
VOUT 8
Pulse Input
15 EN SGM3131 LED1 6
LED2 5
13 VIN
LED3 4
CIN
1μF
14 AGND
PGND
LED4 3
7
COUT
1µF
Figure 2. For 3-WLEDs Application Circuit
SG Micro Corp
8
www.sg-micro.com
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