LT3755 LINER [Linear Technology], LT3755 Datasheet - Page 19

• Manufacturer Part Number: LT3755
• Description: 40VIN, 75VOUT LED Controller
• Manufacturer: LINER [Linear Technology]

TYPICAL APPLICATIONS
0V TO 5V
1A/DIV
1A/DIV
PWM
I
15V TO
LED
I
L1: COILTRONICS DR125-330
M1: VISHAY SILICONIX SI7850DP
D1: ON SEMICONDUCTOR MBRS360
M2: ZETEX ZXMN4A06G
M3: ZETEX ZXM62P03E6
Q1: ZETEX FMMT558
L1
40V
V
IN
1000:1 PWM Dimming at 120Hz
V
V
IN
LED
= 24V
INTV
= 10V
C1
1μF
CC
100k
with Buck Mode
187k
10k
1M
2μs/DIV
0.1μF
28.7k
400kHz
0.001μF
SHDN/UVLO
V
CTRL
PWM
OPENLED
SS
RT
REF
37551 TA03b
V
C
47k
Buck Mode 1.4A LED Driver
GND
LT3755
INTV
CC
V
IN
C2
4.7μF
PWMOUT
SENSE
GATE
ISP
ISN
FB
100
84
80
96
92
88
M2
1.5k
1k
15
0.068Ω
20
Effi ciency vs V
M3
M1
0.033Ω
L1
33μH
1.4A
249k
25
3 LUXEON K2
- WHITE
Q1
V
LT3755/LT3755-1
D1
IN
(V)
+
14V
–
22.1k
30
100k
37551 TA03a
IN
C4
4.7μF
35
V
IN
37551 TA03c
C3
4.7μF
40
19
37551fa