lt3755-2 Linear Technology Corporation, lt3755-2 Datasheet - Page 21

• Manufacturer Part Number: lt3755-2
• Description: Lt3755/lt3755-1/lt3755-2 40vin, 75vout Led Controllers Features
• Manufacturer: Linear Technology Corporation

Typical applicaTions
500mA/DIV
INDUCTOR
CURRENT
1A/DIV
GATE
PWM
I
LED
Minimum PWM Pulse Switching Waveform
22V TO
36V
V
IN
L1: TOKO 962BS_3R3M
M1: VISHAY SILICONIX SI7850DP
M2: VISHAY SILICONIX SI2306DS
D1: DIODES, INC SBM540
1M
68.1k
500ns/DIV
0.1µF
4.7µF
Buck Mode 500mA LED Driver for 20kHz PWM Dimming
470pF
SHDN/UVLO
V
CTRL
PWM
INTV
OPENLED
SS
REF
CC
V
C
22k
37551 TA06b
LT3755-2
GND
V
IN
FB
PWMOUT
SENSE
GATE
ISN
ISP
800kHz
RT
13k
0.22µF
LT3755/LT3755-1/LT3755-2
2200pF
100
96
92
88
84
80
15
6V
V
I
LED
LED
= 0.5A
= 16V
0.033
1M
20
3.3µH
0.2
L1
Efficiency vs V
M2
M1
25
500mA
V
4.7µF 2
IN
2.2µF 2
16V
25V
D1
(V)
50V
30
37551 TA03a
IN
35
37551 TA06c
40

37551fd