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LT3755 Datasheet(PDF) 21 Page - Linear Technology

Part # LT3755
Description  40VIN, 75VOUT LED Controllers
PDF  26 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3755 Datasheet(HTML) 21 Page - Linear Technology

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LT3755/LT3755-1/LT3755-2

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



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