LT3436 LINER [Linear Technology], LT3436 Datasheet - Page 12

• Manufacturer Part Number: LT3436
• Description: 3A, 800kHz Step-Up Switching Regulator
• Manufacturer: LINER [Linear Technology]

LT3436
TYPICAL APPLICATIO S
12
3V TO 20V
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
GND
0
V IN
0
Increases with Input Voltage
+
2
OPTION: REPLACE L1, L2 WITH TRANSFORMER CTX5-1A, CTX8-1A, CTX10-2A
Maximum Load Current
V IN
3V to 20V
4
C1
OPT
5V
6
OFF ON
U
8
SHDN
SYNC
C1
4.7µF
X5R
25V
CERAMIC
V
C3
4.7µF
IN
10
IN
(V)
5V
12
V
SHDN
SYNC GND
IN
OUT
SHDN
V
SYNC
CDRH6D28-100
14
IN
3.9µH
LT3436
GND
SEPIC with Either Two Inductors or a Transformer
Load Disconnects in Shutdown
L1
LT3436
16
L1
3436 TA02c
GND
18
V
V
SW
FB
C
20
SW
R3
4.7k
V
FB
C2
10nF
C
0.1µF
B220A
C6
D1
C4
470pF
C4
470pF
1µF, X5R, 25V
CERAMIC
0.1µF
1N4148
10nF
C3
C7
C1
4.7µF
D2
C5
R3
2.2k
1N4148
100
Si2306DS
D3
90
80
70
60
50
40
30
20
10
0
Q1
0
B220A
L2
CDRH6D28-100
D1
90.9k
10k
1%
R1
R2
R4
1M
500
3.3V
LOAD CURRENT (mA)
C5
OPT
IN
Efficiency
C7
22µF
LT3436 • TA02
1.0k
R1
31.6K
1%
R2
10K
1%
V
12V
0.8A
OUT
5V
IN
C2
22µF
X5R
10V
CERAMIC
1.5k
12V
3436 TA02b
C6
OPT
IN
3436 TA02d
V
5V
GND
2.0k
OUT
3436fa