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LT3476 Datasheet(PDF) 32 Page - Analog Devices

Part # LT3476
Description  I2C Programmable Quad Monolithic Boost LED Driver
PDF  36 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LT3476 Datasheet(HTML) 32 Page - Analog Devices

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LT3966
32
Rev. 0
For more information www.analog.com
TYPICAL APPLICATIONS
Efficiency
8192:1 Dimming
Multiphase
100W, Quad 750mA × 12 LED Buck Mode Driver with I2C Dimming
4.7F
4×
ISP1
ISN1
TG1
330mΩ
10F
L1
68H
VIN
44V TO 52V
ISP2
ISN2
TG2
330mΩ
10F
L2
68H
ISP3
ISN3
TG3
330mΩ
10F
L3
68H
SW1
ISP4
ISN4
TG4
330mΩ
10F
L4
68H
SW2
SW3
SW4
VIN
EN/UVLO
EXT1
GND
ISP1–4
ISN1–4
FB1–4
TG1–4
EXT2
SDA SCL
RT
SYNC ADR1–2 INTVCC
ALERT
CTRL/
PWM1–4
4.7F
97.6k
22.1k
I2C
BUS
LT3966
1M
33k
INTVCC
D1
D2
D3
D4
M1
M2
M3
M4
150k
360kHz
MULTI-
PHASE
3966 TA03a
D1, D2, D3, D4: PMEG6020
M1, M2, M3, M4: SI7309
L1, L2, L3, L4: WURTH 744 373 49680
fSW = 360kHz
VIN = 48V
VOUT = 34V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
70
75
80
85
90
95
100
3966 TA03b
LED CURRENT (A)
(4 × 750mA/4 CH)
MPHASE
0.5µs/DIV
3966 TA03c
VIN = 40V
VOUT = 23V
CH 1
50V/DIV
CH 2
50V/DIV
CH 3
50V/DIV
CH 3
50V/DIV
2µs/DIV
3966 TA03d
T pwm = 3µsec
VIN = 48V
VOUT = 34V
ILED = 0.75A
VSWITCH
50V/DIV
ILED
500mA/DIV
IINDUCTOR
1A/DIV



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