LT3598
TYPICAL APPLICATIONS
2 MHz LED Driver for 20 White LEDs
L1
PV IN
11.4V TO 12.6V
C1
2.2μF
V IN
10μH
D1
C2
3.2V TO 5.5V
C3
2.2μF
R6
100k
V IN
OPENLED
SW
V OUT
V O_SW
R4
2.4M
4.7μF
SHDN
PWM
SYNC
SHDN
PWM
SYNC
RT
LT3598
FB
R5
140k
R1
21.5k
V REF
R9
10k
CTRL
LED1
LED2
LED3
20mA
LED4
LED5
R8
107k
R7
178k
T SET I SET
C5
R3
47pF
14.7k
SS
GND
LED6
V C
R C
2k
C6
100pF
3598 TA02a
C4
0.1μF
C C
10nF
C1: MURATA GRM21BR71E225K
C2: MURATA GRM32ER71H475K
C3: TAIYO YUDEN LMK212BJ225MG
D1: DIODES, INC. SBR140S3
L1: TOKO 1123AS-100M
PWM Dimming (3000:1)
PWM
5V/DIV
I L
200mA/DIV
I LED, total
50mA/DIV
PV IN = 12V, V IN = 3.3V
3598 TA07a
1μs/DIV
3598fb
19
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相关代理商/技术参数
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