Datasheet

LT3799-1
17
37991f
TYPICAL APPLICATIONS
37991 TA02
20W
LED
POWER
V
IN_SENSE
V
IN
DCM
FB
V
REF
CTRL2
CTRL1
GATE
SENSE
INTV
CC
GND
LT3799-1
FAULT
FAULT COMP
+
CT COMP
–
C10
560μ
F
× 2
BR1: DIODES, INC. HD06
D1: CENTRAL SEMICONDUCTOR CMR1U-06M
D2, D3: DIODES INC. BAV20W
DR: CENTRAL SEMICONDUCTOR CMR1U-02M
Z1: FAIRCHILD SMBJ170A
Z2: CENTRAL SEMICONDUCTOR CMZ5937B
T1: COILCRAFT JA4429-AL
M1: FAIRCHILD FDPF15N65
C4
4.7pF
C5
10μ
F
C8
2.2nF
4:1:1
C7, 0.1μF
R16
20Ω
R6
20Ω
D2
D4
Z1
170V
D1
R
S
0.05Ω
R4
499k
R3
499k
R8
100k
R7
100k
R5
3.48k
R15
4.99k
R4
100k
4.02k
CTRL3
90V
TO 265V
AC
C2
0.22μF
R9
40.2k
R16
32.4k
R10
14.3k
100k
NTC
R18
100k
C9
4.7μF
R13
2k
C1
0.068μF
BR1
L1
33mH
L2
800μH
D3
Z2
33V
M1
1A
Universal 20W LED Driver
Component Values for Input Voltage Ranges
R5 (Ω) R10 (Ω) R
S
(Ω) C2 (μF)
Optimized for 110V 6.34k 15.8k 0.05 0.22
Optimized for 220V 3.48k 24.9k 0.075 0.1
Universal 3.48k 14.3k 0.05 0.22