Datasheet
LTC3780
30
3780ff
For more information www.linear.com/LTC3780
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
LINEAR TECHNOLOGY CORPORATION 2005
LT 0413 REV F • PRINTED IN USA
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/LTC3780
relaTeD parTs
Typical applicaTion
LTC3780
D
A
BO540W
D
B
BO540W
C
F
0.1µF
C
OUT
330µF
16V
V
OUT
12V
5A
V
IN
5V TO 32V
C
C1
0.01µF
C
C2
47pF
C
SS
0.022µF
C
IN
22µF
35V
3780 TA02
C
A
0.22µF
V
PULLUP
C
B
0.22µF
B
Si7884DP
C
Si7884DP
D
Si7884DP
L
4.7µH
D1
B340A
D2
B320A
A
Si7884DP
C
VCC
4.7µF
9mΩ
10Ω
PGOOD
SS
SENSE
+
SENSE
–
I
TH
V
OSENSE
BOOST1
TG1
SW1
V
IN
EXTV
CC
INTV
CC
1
2
3
4
5
6
24
23
22
21
20
19
SGND
RUN
FCB
PLLFLTR
BG1
PGND
BG2
SW2
PLLIN
STBYMD
TG2
BOOST2
7
8
9
10
18
17
16
15
11
12
14
13
100Ω
100Ω
R1
8.06k, 1%
R2 113k, 1%
ON/OFF
10k
2V
R
C
100k
R
PU
68pF
C
STBYMD
0.01µF
+
+
22µF
16V, X7R
× 3
3.3µF
50V, X5R
× 3
Figure 13. LTC3780 12V/5A, Buck-Boost Regulator
PART NUMBER DESCRIPTION COMMENTS
LTC3789 38V High Efficiency Synchronous 4-Switch Buck-Boost
DC/DC Controller
4V ≤ V
IN
≤ 38V, 0.8V ≤ V
OUT
≤ 38V 4mm × 5mm QFN-28, SSOP-28
LT3791-1 60V High Efficiency Synchronous 4-Switch Buck-Boost
DC/DC Controller
4.7V ≤ V
IN
≤ 60V, 1.2V ≤ V
OUT
≤ 30V TSSOP-38
LT8705 80V High Efficiency Synchronous 4-Switch Buck-Boost
DC/DC Controller
2.8V ≤ V
IN
≤ 80V, 1.3V ≤ V
OUT
≤ 80V 5mm × 7mm QFN-38,
TSSOP-38
LTC3785 10V High Efficiency Synchronous 4-Switch Buck-Boost
DC/DC Controller
2.7V ≤ V
IN
≤ 10V, 2.7V ≤ V
OUT
≤ 10V 4mm × 4mm QFN-24
LTC3112 15V, 2.5A Synchronous Buck-Boost DC/DC Converter
2.7V ≤ V
IN
≤ 15V, 2.5V ≤ V
OUT
≤ 14V 4mm × 5mm DFN-16,
TSSOP-20
LTC3115-1 40V, 2A Synchronous Buck-Boost DC/DC Converter
2.7V ≤ V
IN
≤ 40V, 2.7V ≤ V
OUT
≤ 40V 4mm × 5mm DFN-16,
TSSOP-20
LTM4607 High Efficiency Buck-Boost DC/DC µModule
®
4.5V ≤ V
IN
≤ 36V, 0.8V ≤ V
OUT
≤ 25V 15mm × 15mm × 2.8mm
LTM4609 High Efficiency Buck-Boost DC/DC µModule
4.5V ≤ V
IN
≤ 36V, 0.8V ≤ V
OUT
≤ 34V 15mm × 15mm × 2.8mm