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LT3756 Datasheet(PDF) 25 Page - Analog Devices

Part # LT3756
Description  60VIN/120VOUT Dual LED Controller with Exponential PWM and Scalable Dimming
PDF  31 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LT3756 Datasheet(HTML) 25 Page - Analog Devices

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LT8355-1
25
Rev. A
For more information www.analog.com
TYPICAL APPLICATIONS
Efficiency vs VIN Voltage
10% Internal PWM Dimming
Dual 35W Buck-Boost Mode LED Driver
0.62nF
f = 300kHz
102k
499k
47k
47k
D1
10µF
500m
M3
L1
22µH
634k
10k
12.5m
ILIM = 8A
M1
D2
500m
M4
634k
Q2
M2
2.2µF
10k
100k
100k
10µF
10µF
L2
22µH
12.5m
ILIM = 8A
0.62nF
2.2µF
2.2µF
Q1
50k
52.3k
10nF
VIN
8V TO 36V
EN/UVLO
VC2
VC1
VREF
CTRL1
IADJ2
INTV
CC
69.8k
LT8355-1
VIN
GATE1
0.5A
FB1
ISP1
ISN1
PWMTG1
SENSEP1
SENSEN1
PWM2
RT
GND
35W
LED
ARRAY
VIN
VIN
GATE2
0.5A
FB2
ISP2
ISN2
PWMTG2
SENSEP2
SENSEN2
35W
LED
ARRAY
FAULT1
FAULT2
VIN
100V
100V
50V
100V
100V
L1, L2: WURTH 74435572200
M1, M2: VISHAY Si7430DP
M3, M4: VISHAY Si4409DY
D1,D2: DIODES INC SBR12U120P5
8355-1 TA03a
CTRL2
PWM1
100k
NO DIMMING
BOTH CHANNELS
CH1 ONLY
CH2 ONLY
VIN (V)
8
12
16
20
24
28
32
36
82
84
86
88
90
92
94
83551 TA03b
VPWM = 0.511VREF (10% TYPICAL)
400µs/DIV
INDUCTOR
CURRENT
2A/DIV
LED
CURRNET
250mA/DIV
8355-1 TA03c



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