Datasheet

14
LT3436
3436fa
LT3436
V
IN
V
C
GND
FB
LT3436 • TA04
V
SW
SHDN
L1
4.7µH
C1
10µF
SINGLE
Li-Ion
CELL
C4
47µF
10V
C2
3.3nF
C3
470pF
R3
1.5k
R2
10k
1%
R1
31.6k
1%
V
OUT
5V
D1
B220A
ON
OFF
+ +
+
V
IN
2.7V
3.3V
3.6V
I
OUT
1.5A
1.86A
2.0A
Single Li-Ion Cell to 5V
TYPICAL APPLICATIO S
U
SEPIC Converter Drives 5W LumiLEDs Luxeon V White LEDs at 70% Efficiency
V
IN
FB
V
C
SYNC
GNDGND
3436 TA04b
SW
SHDN
C4
0.1µF
Q1
V
OUT
V
OUT
V
IN
GND
V
IN
3.6V TO 17V
LT3436
D1
B130A
L1
L2
R7
124k
Q1: DIODES, INC. MMBT2222A
L1: CDRH6D28 10µH 1.7A
L2: CDRH4D28 10µH 1A
D2: LUMILEDS LXHL-PW03 EMITTER OR LXHL-LW6C STAR
D2
700mA
C1
4.7µF
X5R
25V
CERAMIC
C2
22µF
X5R
16V
CERAMIC
C
COUP
2.2µF, X5R, 25V
CERAMIC
R6
4.99k
8.2k
LED ON
–
+
R4
1k
1%
R2
0.068Ω
1%
R5
23.7k
LT1783