Datasheet

LT3845A
21
3845afa
TYPICAL APPLICATIONS
9V-16V to 3.3V at 10A DC/DC Converter Capable of Withstanding 60V Transients,
All Ceramic Capacitors and Soft-Start Enabled
V
IN
SHDN
C
SS
BURST_EN
V
FB
V
C
SYNC
f
SET
BOOST
TG
SW
V
CC
BG
PGND
SENSE
+
SENSE
–
SGND
D2A BAV99
C5
1µF
16V
C3
8200pF
M1
Si7370DP
M2
Si7370DP
D1
L1
3.3µH
R
SENSE
0.006Ω
LT3845A
C4
2.2µF
16V
3845A TA02
C2
6800pF
C
OUT
100µF
6.3V
×5
V
OUT
3.3V
10A
R3
1.1M
V
IN
9V TO 16V
60V TRANSIENTS
C
IN2
0.1µF
100V
R6
49.9k
V
IN
R5
100k
SYNC
R7
4.99k
D3
12V
R4
25k
R1
10k
R2
16.9k
C
IN
2.2µF
100V
×4
C
IN
: TDK C4532X7R2A225K
C
OUT
: MURATA GRM32ER60J107ME20
D1: DIODES INC. B3100
L1: WURTH 7443551370
D2B
BAV99
Q1
60V
LOAD CURRENT (A)
0.1
65
EFFICIENCY(%)
POWER LOSS (W)
70
75
80
85
95
1 10
3845A TA02b
90
0
1
2
3
4
6
5
V
IN
= 9V
V
IN
= 14V
V
IN
= 16V
POWER LOSS
V
IN
= 14V
Efficiency and Power Loss