Datasheet

LT3800
20
3800fc
TYPICAL APPLICATIONS
9V-38V to 3.3V 10A DC/DC Converter with Input UVLO and Burst Mode Operation
No Load I(V
IN
) = 100μA
Effi ciency and Power Loss
V
IN
NC
SHDN
C
SS
BURST_EN
V
FB
V
C
SENSE
BOOST
TG
SW
NC
V
CC
BG
PGND
SENSE
+
LT3800
SGND
C1 1nF
C3
100pF
C2
330pF
C10
100pF
R2
169k
1%
R1
100k
1%
R4 39k
R3
82k
R
A
1M
R
B
187k
R
S
0.01Ω
D1
MBR520
C5 1µF
16V X7R
C4 1µF
16V X7R
C9
4.7µF
50V
X7R ×3
C8
100µF
50V
×2
+
C7
10µF
6.3V
X7R
C6
470µF
×2
+
M1
Si7884DP
M2
Si7884DP
DS1
SS14
×2
L1
3.3μH
V
IN
9V TO 38V
V
OUT
3.3V AT 10A
3800 TA03a
C6: SANYO POSCAP 4TPD470M
L1: IHLP-5050FD-01
I
LOAD
(A)
78
84
82
80
92
90
88
86
0
3
2
1
7
6
5
4
3800 TA03b
EFFICIENCY (%)
POWER LOSS (W)
0.1
10
1
V
IN
= 13.8V