LTC3785 LINER [Linear Technology], LTC3785 Datasheet - Page 28

• Manufacturer Part Number: LTC3785
• Description: High Efficiency, Synchronous, 4-Switch Buck-Boost Controller
• Manufacturer: LINER [Linear Technology]

LTC3789
Typical applicaTion
relaTeD parTs
PART NUMBER
LTC3780
LTC3785
LTM4605
LTM4607
LTM4609
LTC3533
28
V
IN
+
68.1k
R30
12.1k
R31
D8
BZX84-
C5V1
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
0.01µF
L1: WÜRTH 7443630550
R10, 1.24k
C7, 0.1µF
V
R25
0
OUT
DESCRIPTION
High Efficiency (Up to 98%) Synchronous, 4-Switch Buck-Boost
DC/DC Controller
High Efficiency (Up to 98%) Synchronous, 4-Switch Buck-Boost
DC/DC Controller
High Efficiency Buck-Boost DC/DC µModule™
High Efficiency Buck-Boost DC/DC µModule
High Efficiency Buck-Boost DC/DC µModule
2A Synchronous Buck-Boost Monolithic DC/DC Converter
V
C8, 0.1µF
R9, 1.24k
IN
C
100
C2
R14
, 0.01µF
●
121k, 1%
FAX: [phone]
V
OS
R13, 100
R21
+
R
232k
R
8.06k
FB1
FB2
C11, OPT
C
R
C1
C
C10, 2.2µF
, 15k
, 1000pF
10
11
12
13
14
1
2
3
4
5
6
7
8
9
V
SS
SENSE1
SENSE1
I
SGND
MODE/PLLIN
FREQ
RUN
V
V
I
I
I
TH
LIM
OSENSE
OSENSE
FB
INSNS
OUTSNS
LTC3789EGN
●
PGOOD
INTV
28
+
–
+
–
www.linear.com
R3, 100
CC
R7
100k
BOOST1
BOOST2
EXTV
PGND1
INTV
TRIM
SW1
SW2
TG1
BG1
BG2
TG2
V
CC
CC
R4, 100
IN
24V/5A Buck-Boost Regulator
27
26
25
24
23
22
21
20
19
18
17
16
15
INTV
V
OUT
CC
R11, 0
10 , 0805
C24, 1µF
R5
C15
1µF
50V
1210
V
IN
10µF, 1206
D4
DFLS160
D7
DFLS160 3
C4
0.22µF, 16V
C22
0.22µF, 16V
C18
C6
3.3µF
50V
1210
R1, 5.6
Si4840BDY
BAS16
SiR422DP
+
D2
1
C
270µF
50V
OPT
Q2
Q4
IN1
COMMENTS
4V ≤ V
and SSOP-24 Packages
2.7V ≤ V
QFN-24 Package
4.5V ≤ V
2.8mm LGA Package
4.5V ≤ V
2.8mm LGA Package
4.5V ≤ V
2.8mm LGA Package
1.8V ≤ V
I
SD
+
< 1µA, 3mm × 4mm DFN-14 Package
IN
D5
B240A
R18
8m
2%
C
270µF
50V
IN2
IN
IN
IN
IN
IN
≤ 36V, 0.8V ≤ V
SiR422DP
≤ 30V, 2.7V ≤ V
≤ 20V, 0.8V ≤ V
≤ 36V, 0.8V ≤ V
≤ 36V, 0.8V ≤ V
≤ 5.5V, 1.8V ≤ V
J3
V
9V TO
35V
IN
Q3
5.5µH
L1
V
OS
+
 LINEAR TECHNOLOGY CORPORATION 2010
Q5
SiR422DP
D6
B240A
OUT
OUT
OUT
OUT
OUT
OUT
≤ 30V, 5mm × 5mm QFN-32
C1
2.2µF,
50V
X5R
≤ 10V, 4mm × 4mm
≤ 16V, 15mm × 15mm ×
≤ 25V, 15mm × 15mm ×
≤ 34V, 15mm × 15mm ×
≤ 5.25V, I
0.010
2%
3789 TA02
R2
V
LT 1210 • PRINTED IN USA
OUT
+
Q
= 40µA,
C
330µF
34V
OUT2
V
OS
C3
2.2µF
50V
X5R
R8
10
+
J1
V
24V AT
5A
OUT
3789f