CAT32 Datasheet, PDF (11/14 Pages) Catalyst Semiconductor – CMOS White LED Driver

Four LEDs with PWM Dimming Control:
D1
VIN
6
1
VIN
SW
PWM
DIMMING
CONTROL
CAT32
5 _SHDN
3
LED
RSET
4
GND
2
15mA
Efficiency - Four LEDs
CAT32
85
80
75
70
65
60
0
Vin = 4.2V
Vin = 3.0V
5
10
15
20
LED CURRENT [mA]
11
Doc No. 5001, Rev. AC