SP6683 Datasheet, PDF (12/14 Pages) Sipex Corporation – High Power LED Driver for Parallel Configuration

APPLICATION INFORMATION
Vin: 3.0 - 4.2V
C1
2.2uF
R3
1 .0M
SHDN
C2
1uF
R1
205K
SP6683
1 _{Vou t}
C2P ¹⁰
2 _C1P
C1N ⁹
3 _Vin
GND ⁸
4 _Vmode
C2N ⁷
5
FB
6
EN/ PWM
R2
100K
R1 = (Vthres /1.25 - 1)*R2
R1 = 174K for 100mA Vthres = 3.4V
R1 = 205K for 200mA Vthres = 3.8V
C4
C5
2.2uF
1uF
D1
L umiL ED
FLASH
200mA
Rb
1.5Ohm, 0603
SP6683 Li-Ion Input in 1x to 1.5X mode to LumiLED PWF1
100.0
Efficiency: 1X-1.5X Cin = Cout = 2.2uF
90.0
Iout = 200mA
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
3.2
3.4
3.6
3.8
4.0
4.2
Vin (V)
Output Current: 1X-1.5X Cin = Cout = 2.2uF
400
350
Iout = 200mA
300
250
200
150
100
50
0
3.2
3.4
3.6
3.8
4.0
4.2
Vin (V)
Date: 3/31/06 RevG
SP6683 1X/1.5X Charge Pump LED Driver for Flash or Backlight
12
© Copyright 2006 Sipex Corporation