Datasheet
LT3796/LT3796-1
36
3796fa
For more information www.linear.com/3796
LINEAR TECHNOLOGY CORPORATION 2012
LT 0113 REV A • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/3796
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER DESCRIPTION COMMENTS
LT3755/LT3755-1
LT3755-2
High Side 60V, 1MHz LED Controller with
True Color 3,000:1 PWM Dimming
V
IN
: 4.5V to 40V, V
OUT
Range: 5V to 60V, True Color PWM, Analog = 3000:1, I
SD
< 1µA,
3mm × 3mm QFN-16, MSOP-16E Packages
LT3756/LT3756-1
LT3756-2
High Side 100V, 1MHz LED Controller with
True Color 3,000:1 PWM Dimming
V
IN
: 6V to 100V, V
OUT
Range: 5V to 100V, True Color PWM, Analog = 3000:1, I
SD
< 1µA,
3mm × 3mm QFN-16, MSOP-16E Packages
LT3743 Synchronous Step-Down 20A LED Driver
with Three-State LED Current Control
V
IN
: 5.5V to 36V, V
OUT
Range: 5.5V to 35V, True Color PWM, Analog = 3000:1, I
SD
< 1µA,
4mm × 5mm QFN-28, TSSOP-28E Packages
LT3791 60V, Synchronous Buck-Boost LED Driver
Controller
V
IN
: 4.7V to 60V, V
OUT
Range: 1.2V to 60V, True Color PWM, Analog, I
SD
< 1µA,
TSSOP-38E Package
LT3791-1 60V, Synchronous Buck-Boost Controller V
IN
: 4.7V to 60V, V
OUT
Range: 1.2V to 60V, I
SD
< 1µA, TSSOP-38E Package
LT3517 1.3A, 2.5MHz High Current LED Driver
with 3,000:1 Dimming
V
IN
: 3V to 30V, True Color PWM, Analog = 3000:1, I
SD
< 1µA, 4mm × 4mm QFN-16
Package
LT3518 2.3A, 2.5MHz High Current LED Driver
with 3,000:1 Dimming
V
IN
: 3V to 30V, True Color PWM, Analog = 3000:1, I
SD
< 1µA, 4mm × 4mm QFN-16
Package
LT3474/LT3474-1 36V, 1A (ILED), 2MHz, Step-Down LED
Driver
V
IN
: 4V to 36V, V
OUT
Range = 13.5V, True Color PWM = 400:1, I
SD
< 1µA, TSSOP-16E
Package
LT3475/LT3475-1 Dual 1.5A(ILED), 36V, 2MHz, Step-Down
LED Driver
V
IN
: 4V to 36V, V
OUT
Range = 13.5V, True Color PWM, Analog = 3000:1, I
SD
< 1µA,
TSSOP-20E Package
V
IN
(V)
100
37961 TA07b
0 20 30 40 50 6010
80
75
70
85
90
95
EFFICIENCY (%)
PWM = V
REF
Buck-Boost Mode LED Driver with Open LED Clamp and Output Voltage Limit
Efficiency vs V
IN
CSP V
S
V
IN
CSN
RT
V
C
SS
SYNC
25V LED
250mA
LT3796
37961 TA07a
V
REF
CSOUT
FB1
PWM
PWM
LED CURRENT REPORTING
ISMON
EN/UVLO
CTRL
GND
FB2
ISP
ISN
TG
INTV
CC
INTV
CC
GATE
SENSE
C
C
10nF
L1 68µH D1
R
T
19.6k
400kHz
R
C
4.99k
C5
4.7µF
C6
0.1µF
C4
0.1µF
R1
1M
R2
187k
R6
200k
R5
20k
R4
715k
C1
2.2µF
×2
9V TO 55V
75V (TRANSIENT)
V
IN
C3
4.7µF
×2
V
IN
R8
13.3k
R
SNS
33mΩ
R
LED
1Ω
M2
V
IN
M1
R3
249k
R7
1M
C2
1µF
VMODE
FAULT
M1: FAIRCHILD SEMICONDUCTOR
FDM3622
M2: ZETEX ZXMP6A13F
L1: WÜRTH 744066680
D1: IRF 10BQ100
LED: CREE XLAMP XR-E
VMODE
FAULT
R10
100k
R9
100k
INTV
CC