Datasheet

LT4351
17
4351fd
TYPICAL APPLICATIONS
Lead Acid Battery Backup
5V Redundant Supply with External V
DD
GATE OUTV
IN
UV
OV
1µF
R1
1.69k
1%
R
B
25.5k
1%
LT4351
SW
V
DD
STATUS
5
FAULT
GND
1ST SOURCE
Si4838DY
3
1Ω
10µF
7
6
4
2
1 10
9
8
R
A
1.47k
1%
R2
24.9k
1%
0.1µF
100µF
10µF
10µF
2k
4351 F15
2k
LOAD
4351 TA03
COMMON
5V
SOURCE
12V
SOURCE
2ND
5V SOURCE
2ND
12V SOURCE
2ND LT4351
CIRCUIT
+
GATE OUTV
IN
UV
OV
1µF
10µF
MBR0530
MBR0530
R1
365Ω
1%
R
B
73.2k
1%
10µH
12V
LEAD-ACID
BATTERY
CHARGER
LT4351
SW
V
DD
STATUS
5
FAULT
GND
Si4408DY
3
7
6
4
2
1 10
9
8
R
A
1.5k
1%
R2
12.7k
1%
1Ω
0.1µF
220µF
10µF
10µF
10k
4351TA02
OUT
LOAD
10k
UV
FAULT
= 10.8V
OV
FAULT
= 15V
14V
POWER
SUPPLY
+
+