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LT3799
TYPICAL APPLICATION
Universal Input TRIAC Dimmable 14W LED Driver
L2
750μH
L1
39mH
BR1
90V
TO 265V
AC
C1
47nF
C2
0.1μF
C3
0.22μF
R1
250
R2
250
R3
499k
R4
499k
R7
100k
R8
100k
D3
V IN
R6
D2 20
C4
C5 4.7pF
10μF
DCM
R13
2k
R4
100k
4:1:0.71
D4
0.5A
V IN_SENSE
FB
Z1
R5
3.48k
LT3799
R15
5.90k
D1
C10
390μF
×2
R18
100k
R16
10k
R9
40.2k
V REF
CTRL3
CTRL2
GATE
SENSE
R16
20
Z2
14W
LED
POWER
PHOTOCELL
R17
10k
R10
23.2k
CTRL1
INTV CC
GND
C9
4.7μF
R S
0.10
C8
2.2nF
FAULT
FAULT CT COMP +
COMP –
3799 TA04
BR1: DIODES, INC. HD06
D1: CENTRAL SEMICONDUCTOR CMR1U-06M
D2, D3: DIODES INC. BAV20W
D4: DIODES INC. DFLS1150
Z1: FAIRCHILD SMBJ170A
Z2: CENTRAL SEMICONDUCTOR CMZ5938B
T1: WüRTH ELEKTRONIK WE750813144
M1: ST MICRO STD12N65M5
RELATED PARTS
C6
0.1μF
C7, 0.1μF
PART NUMBER
LT3755/ LT3755-1/
LT3755-2
LT3756/ LT3756-1/
LT3756-2
LT3743
LT3518
LT3517
LT3741
DESCRIPTION
High Side 60V, 1MHz LED Controller with 3000:1
True Color PWM? Dimming
High Side 100V, 1MHz LED Controller with 3000:1
True Color PWM Dimming
Synchronous Step-Down 20A LED Driver with
Three-State LED Current Control
2.3A, 2.5MHz High Current LED Driver with 3000:1
Dimming
1.3A, 2.5MHz High Current LED Driver with 3000:1
Dimming
High Power, Constant-Current, Constant-Voltage
Synchronous Step-Down Controller
COMMENTS
V IN : 4.5V to 40V, V OUT(MAX) = 60V, Dimming: 3000:1 True Color PWM,
I SD < 1μA, 3mm × 3mm QFN-16 and MSOP-16E Packages
V IN : 6V to 100V, V OUT(MAX) = 100V, Dimming: 3000:1 True Color PWM,
I SD < 1μA, 3mm × 3mm QFN-16 and MSOP-16E Packages
V IN : 5.5V to 36V, Dimming: 10000:1 True Color PWM, I SD < 1μA,
5mm × 8mm QFN-52 Package
V IN : 3V to 30V, Dimming: 3000:1 True Color PWM, I SD < 1μA,
4mm × 4mm QFN-16 Package
V IN : 3V to 30V, Dimming: 3000:1 True Color PWM, I SD < 1μA,
4mm × 4mm QFN-16 Package
V IN : 6V to 36V, Average Current Mode Control, I SD < 1μA,
4mm × 4mm QFN-20 and TSSOP-20E Packages
3799fa
1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408)432-1900 ● FAX:(408)434-0507    www.linear.com ●
20 Linear Technology Corporation
LT 0112 REV A ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2011
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