Datasheet

LT3475/LT3475-1
16
3475fb
BOOST1 BOOST2
SW1
D1
LED 1 LED 2
D2
D3
D4
SW2
OUT1 OUT2
LED1 LED2
V
C1
V
C2
REF R
T
V
ADJ1
V
ADJ2
GND
LT3475
V
IN
SHDN
L2
10
μH
L1
10μH
C3
0.22
μF
6.3V
C4
0.22μF
6.3V
R2
1k
R3
2k
R1
24.3k
C2
2.2
μF
6.3V
C5
2.2μF
6.3V
C6
0.1
μF
C7
0.1μF
3475 TA02
C1 TO C5: X5R OR X7R
D1, D2: DFLS140
D3, D4: MBR0540
LED CURRENT = 1A
V
IN
5V TO 36V
C1
4.7
μF
50V
f
SW
= 600kHz
BOOST1 BOOST2
SW1
LED 11.5A LED
CURRENT
1.5A LED
CURRENT
LED 2
D2
D3
D4
SW2
OUT1 OUT2
LED1 LED2
PWM1 PWM2
V
C1
V
C2
REF
R
T
V
ADJ1
V
ADJ2
GND
LT3475
V
IN
SHDN
D1
L2
10
μH
L1
10μH
C3
0.22
μF
6.3V
C2
0.22μF
6.3V
C4
2.2
μF
6.3V
C5
2.2μF
6.3V
C6
3.3nF
C8
0.1
μF
C9
0.1
μF
C8
220p
C7
3.3nF
3475 TA03
D1, D2: B260
D3, D4: MBR0540
C1 TO C5: X5R OR X7R
M1, M2: Si2302ADS
M3: 2n7002L
V
IN
6V TO 36V
C1
4.7
μF
50V
M1 M2
M3
R1
24.3k
R3
10k
R4
10k
1M
R2
PWM1 PWM2
f
SW
= 600kHz
Dual Step-Down 1A LED Driver
Dual Step-Down 1.5A LED Driver with 1200 : 1 True Color PWM Dimming
TYPICAL APPLICATIONS