lt3475efe-trpbf Linear Technology Corporation, lt3475efe-trpbf Datasheet - Page 16

• Manufacturer Part Number: lt3475efe-trpbf
• Description: Dual Step-down 1.5a Led Driver
• Manufacturer: Linear Technology Corporation

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