Datasheet

LT3796/LT3796-1
26
3796fa
For more information www.linear.com/3796
TYPICAL APPLICATIONS
Buck Mode LED Driver with Open LED Flag and LED Current Reporting
Efficiency vs V
IN
V
IN
(V)
20
75
100
37961 TA03b
30
40 50 7060 80
80
70
85
95
90
EFFICIENCY (%)
R2
61.9k
ISPV
S
V
IN
TGISN
RT SS
V
C
SYNC
M1
LT3796
37961 TA03a
CTRL
PWM
FB2
ISMON
PWM
LED CURRENT REPORTING
EN/UVLO
V
REF
CSOUT
FB1
GATE
SENSE
GND
INTV
CC
CSP
CSN
C
C
4.7nF
R1
1M
L1
33µH
R
LED
100mΩ
M2
LED
+
24V TO 80V
D1
2.5A
R
T
19.6k
400kHz
R
C
10k
C3
4.7µF
INTV
CC
C4
0.1µF
C5
0.1µF
V
IN
C2
4.7µF
×2
25V
R6
59k
R3
49.9k
R4
49.9k
R5 1M
R
SNS
15mΩ
18V
LED
C1
2.2µF
×3
100V
M1: VISHAY SILICONIX Si7454DP
M2: VISHAY SILICONIX Si7113DN
D1: DIODES INC PDS3100
L1: COILTRONICS HC9-330
LED: CREE XLAMP XM-L
VMODE
FAULT
VMODE
FAULT
R8
100k
R9
100k
INTV
CC