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LT3598
TYPICAL APPLICATIONS
1 MHz LED Driver for 36 White LEDs
L1
V IN
5V
10μH
D1
C1
2.2μF
C3
1μF
R6
100k
V IN
OPENLED
SW
V OUT
V O_SW
R4
2.4M
C2
4.7μF
2
SHDN
PWM
SYNC
SHDN
PWM
SYNC
RT
LT3598
FB
R5
76.8k
R1
53.6k
V REF
R9
R8
107k
10k
CTRL
T SET I SET
SS
LED1
LED2
LED3
LED4
LED5
LED6
GND V C
25mA
3598 TA07
C4
C5
47pF
R3
11.5k
0.1μF
R C
3k
C6
100pF
C C
10nF
C1: MURATA GRM21BR71A225K
C2: MURATA GRM32ER71H475K
D1: DIODES, INC. SBR140S3
L1: VISHAY IHLP-2525BD-01
PWM Dimming (20μS Pulse Width)
PWM
5V/DIV
I L
500mA/DIV
I LED, total
50mA/DIV
PV IN = V IN = 5V
3598 TA06
5μs/DIV
3598fb
20
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