Datasheet

LTC4359
15
Rev. E
For more information www.analog.com
TYPICAL APPLICATIONS
LTC4359
V
SS
SHDN
IN SOURCE OUT
R1
1k
GATE
SMAJ58A
58V
Q1
BSC028N06NS FDD16AN08A0 10mΩ
4A OUTPUT
(CLAMPED AT 16V)
10Ω
D2
SMAJ24A
24V
D1
SMAT70A
70V
V
IN
12V
4359 F17
LT4363
GND
SHDN
UV
OV
V
CC
GATE OUT
FB
ENOUT
F LT
SNS
TMR
0.1µF
22µF
C
OUT
47nF
57.6k
4.99k
–27V TO 60V DC SURVIVAL
–40V TO 100V TRANSIENT SURVIVAL
Figure17. Overvoltage Protector and Ideal Diode Blocks Reverse Input Voltage
Figure16. Diode-OR with Selectable Power
Supply Feeds and Reverse Input Protection
LTC4359
V
SS
IN OUTGATE
Q1A
FDMS86101
D4A
DDZ9699T
12V
V
OUT
28V
10A
R1A
1k
R1B
1k
LTC4359
V
SS
IN
SOURCE
SHDN
SOURCE OUTGATE
Q1B
FDMS86101
Q2A
FQA140N10
D1A
SMAJ58A
58V
D2A
SMAJ24A
24V
D1B
SMAJ58A
58V
D2B
SMAJ24A
24V
Q2B
FQA140N10
R5B*
100k
*DECREASES GATE RAMP TIME BY BIASING SOURCEX NEAR V
INX
100k PATH TO V
OUT
IF V
OUT
< V
INX
V
INA
28V
V
INB
28V
C
LOAD
C
OUTA
1.5µF
C
OUTB
1.5µF
4359 F16
D4B
DDZ9699T
12V
ONOFF
ONOFF
SHDN
R5A*
100k
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