Datasheet
LTC3789
30
3789fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
LINEAR TECHNOLOGY CORPORATION 2010
LT 0911 REV A • PRINTED IN USA
relaTeD parTs
Typical applicaTion
PART NUMBER DESCRIPTION COMMENTS
LTC3780 High Efficiency (Up to 98%) Synchronous, 4-Switch Buck-Boost
DC/DC Controller
4V ≤ V
IN
≤ 36V, 0.8V ≤ V
OUT
≤ 30V, 5mm × 5mm QFN-32 and
SSOP-24 Packages
LTC3785 High Efficiency (Up to 98%) Synchronous, 4-Switch Buck-Boost
DC/DC Controller
2.7V ≤ V
IN
≤ 10V, 2.7V ≤ V
OUT
≤ 10V, 4mm × 4mm
QFN-24 Package
LTM4605 High Efficiency Buck-Boost DC/DC µModule™ Regulator
Complete Power Supply
4.5V ≤ V
IN
≤ 20V, 0.8V ≤ V
OUT
≤ 16V, 15mm × 15mm × 2.8mm
LGA Package
LTM4607 High Efficiency Buck-Boost DC/DC µModule Regulator
Complete Power Supply
4.5V ≤ V
IN
≤ 36V, 0.8V ≤ V
OUT
≤ 25V, 15mm × 15mm × 2.8mm
LGA Package
LTM4609 High Efficiency Buck-Boost DC/DC µModule Regulator
Complete Power Supply
4.5V ≤ V
IN
≤ 36V, 0.8V ≤ V
OUT
≤ 34V, 15mm × 15mm × 2.8mm
LGA Package
LTC3112 2.5A Synchronous Buck-Boost DC/DC Converter 2.7V ≤ V
IN
≤ 15V, 2.5V ≤ V
OUT
≤ 14V, 4mm × 5mm DFN-16 and
TSSOP-20 Packages
LTC3533 2A Synchronous Buck-Boost Monolithic DC/DC Converter 1.8V ≤ V
IN
≤ 5.5V, 1.8V ≤ V
OUT
≤ 5.25V, I
Q
= 40µA,
I
SD
< 1µA, 3mm × 4mm DFN-14 Package
LTC3789EGN
D4
DFLS160
D7
DFLS160
3 1
D2
BAS16
Q2
SiR422DP
Q4
SiR422DP
D6
B240A
V
OS
+
V
IN
+
V
OUT
V
IN
D8
BZX84-
C5V1
C11, OPT
3789 TA02
INTV
CC
Q5
SiR422DP
L1
5.5µH
Q3
SiR422DP
V
FB
SS
SENSE1
+
SENSE1
–
I
TH
SGND
MODE/PLLIN
FREQ
RUN
V
INSNS
V
OUTSNS
I
LIM
PGOOD SW1
TG1
BOOST1
PGND1
BG1
V
IN
INTV
CC
EXTV
CC
INTV
CC
1
2
3
4
5
6
27
26
25
24
23
22
BG2
BOOST2
I
OSENSE
+
I
OSENSE
–
TG2
SW2
TRIM
7
8
9
10
11
12
13
14
21
20
19
18
17
16
15
R4, 100Ω
R3, 100Ω
R9, 1.24k
R10, 1.24k
R
C
, 15k
R
FB2
8.06k
R
FB1
232k
R2
0.010Ω
2%
R5
10Ω, 0805
C
C1
, 1000pF
C
C2
, 0.01µF
R21
121k, 1%
R31
12.1k
0.01µF
R30
68.1k
C7, 0.1µF
C8, 0.1µF
R13, 100Ω
R14
100Ω
C10, 2.2µF
R11, 0Ω
C4
0.22µF, 16V
C22
0.22µF, 16V
C18
10µF, 1206
R1, 5.6Ω
R18
8mΩ
2%
C1
2.2µF,
50V
X5R
C
OUT2
330µF
34V
C3
2.2µF
50V
X5R
R8
10Ω
C6
3.3µF
50V
1210
C15
1µF
50V
1210
C
IN1
270µF
50V
OPT
C
IN2
270µF
50V
V
IN
9V TO
35V
V
IN
J3
D5
B240A
R7
100k
+
+
R25
0Ω
28
V
OUT
V
OUT
24V AT
5A
V
OS
+
+
V
OS
+
J1
L1: WÜRTH 7443630550
24V/5A Buck-Boost Regulator