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LT3743 Datasheet(PDF) 21 Page - Linear Technology

Part # LT3743
Description  High Current Synchronous Step-Down LED Driver with Three-State Control
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3743 Datasheet(HTML) 21 Page - Linear Technology

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LT3743
21
3743fb
TYPICAL APPLICATIONS
12V, 20A LED Driver
EN/UVLO
PWM
CTRL_SEL
EN/UVLO
PWM
CTRL_SEL
HG
VIN
CBOOT
VREF
CTRL_L
CTRL_H
CTRL_T
LT3743
RT
SYNC
SW
LG
GND
VCH
VCL
SENSE+
SENSE–
PWMGH
PWMGL
VCC_INT
100nF
L1
1.0μH
22μF
C1
330μF
3
2.5mΩ
33nF
FB
10nF
34k
4.7nF
34k
D1: LUMINUS PT120
L1: IHLP4040DZER1R0M01
M1: RJK0365DPA
M2: RJK0346DPA
M3, M4: Si7236DP
C1, C2, C3: PTPR330M9L (THREE IN PARALLEL)
4.7nF
82.5k
50k
50k
C3
330μF
3
D1
60.4k
3743 TA02
10k
1μF
2.2nF
RNTC
10k
220μF
M1
M2
M3
M4
VIN
12V
OUTPUT
20A MAXIMUM
1μF
C2
330μF
3
SS
RHOT
499Ω
10Ω
10Ω
CTRL_SEL DIMMING DUTY CYCLE (%)
0
90
92
94
80
3743 TA02b
88
86
20
40
60
100
84
82
80
VIN = 12V
GREEN LED
Efficiency (Stepping from 2A to 20A)



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