Datasheet

LT3599
22
3599fe
TYPICAL APPLICATIONS
2.1 MHz Boost, Four Strings, 80mA per String, 7 LEDs per String
R
C
10k
C1
3.3μF
25V
C4
47nF
L1
4.7μH
D1
C2
4.7μF
50V
s2
7 LEDs/
STRING
100pF
C
C
2.2nF
R9
16.5k
3599 TA06a
LT3599
V
O_SW
FB
OPENLED
SHORTLED
PWM
SHDN/UVLO
RT
SYNC
PWM
80mA PER STRING
CTRL
V
REF
T
SET
LED1
LED2
LED3
LED4
V
OUT
SWV
IN
V
C
SS GND
I
SET
R10
1M
R11
43.2k
PV
IN
9V TO 16V
V
IN
V
IN
3.1V TO 5.5V
V
IN
R6
20k
R5
100k
DISABLE4
R4
100k
R7
53.6k
R8
80.6k
R1
200k
R2
32.4k
R3
32.4k
C3
1μF
6.3V
C1: MURATA GRM21BR71E335K
C2: MURATA GRM31CR71H475K
D1: DIODES INC.
DFLS240
L1: SUMIDA CDRH4D22HPNP-4R7N
PWM
5V/DIV
I
LED
TOTAL
200mA/DIV
10μs/DIV
3599 TA07
PWM Dimming 3000:1
(10ms Period)