LTC3780_15 Datasheet, PDF (30/30 Pages) Linear Technology – High Efficiency, Synchronous, 4-Switch Buck-Boost Controller

LTC3780
Typical Application
C_SS
0.022µF
C_C2
47pF
C_C1
0.01µF
R_C
100k
R1
8.06k, 1% ^{R2 113k, 1%}
ON/OFF
10k
2V
C_STBYMD
0.01µF
68pF
R_PU
V_PULLUP
C_A
0.22µF
1
24
PGOOD BOOST1
2
SS
23
TG1
LTC3780
3 _SENSE+
22
SW1
D_A
BO540W
4 _SENSE–
21
V_IN
5
20
I_TH
EXTV_CC
6
19
V_OSENSE INTV_CC
7
SGND
8
RUN
9
FCB
10
PLLFLTR
BG1 ¹⁸
PGND ¹⁷
BG2 ¹⁶
SW2 ¹⁵
D_B
BO540W
11 _PLLIN
TG2 ¹⁴
12 _{STBYMD BOOST2} 13
C_F 0.1µF
C_VCC 4.7µF
9mΩ
10Ω
100Ω
100Ω
C_B 0.22µF
22µF
16V, X7R
×3
+
D
Si7884DP
D2
B320A
V_OUT
12V
5A
C_OUT
330µF
16V
C
Si7884DP
L
4.7µH
B
D1
Si7884DP _B340A
A
Si7884DP
C_IN
+
22µF
35V
3.3µF
50V, X5R
×3
3780 TA02
V_IN
5V TO 32V
Figure 13. LTC3780 12V/5A, Buck-Boost Regulator
Related Parts
PART NUMBER
LTC3789
LT3791-1
LT8705
LTC3785
LTC3112
LTC3115-1
LTM4607
LTM4609
DESCRIPTION
38V High Efficiency Synchronous 4-Switch Buck-Boost
DC/DC Controller
60V High Efficiency Synchronous 4-Switch Buck-Boost
DC/DC Controller
80V High Efficiency Synchronous 4-Switch Buck-Boost
DC/DC Controller
10V High Efficiency Synchronous 4-Switch Buck-Boost
DC/DC Controller
15V, 2.5A Synchronous Buck-Boost DC/DC Converter
40V, 2A Synchronous Buck-Boost DC/DC Converter
High Efficiency Buck-Boost DC/DC µModule^®
High Efficiency Buck-Boost DC/DC µModule
COMMENTS
4V ≤ V_IN ≤ 38V, 0.8V ≤ V_OUT ≤ 38V 4mm × 5mm QFN-28, SSOP-28
4.7V ≤ V_IN ≤ 60V, 1.2V ≤ V_OUT ≤ 30V TSSOP-38
2.8V ≤ V_IN ≤ 80V, 1.3V ≤ V_OUT ≤ 80V 5mm × 7mm QFN-38,
TSSOP-38
2.7V ≤ V_IN ≤ 10V, 2.7V ≤ V_OUT ≤ 10V 4mm × 4mm QFN-24
2.7V ≤ V_IN ≤ 15V, 2.5V ≤ V_OUT ≤ 14V 4mm × 5mm DFN-16,
TSSOP-20
2.7V ≤ V_IN ≤ 40V, 2.7V ≤ V_OUT ≤ 40V 4mm × 5mm DFN-16,
TSSOP-20
4.5V ≤ V_IN ≤ 36V, 0.8V ≤ V_OUT ≤ 25V 15mm × 15mm × 2.8mm
4.5V ≤ V_IN ≤ 36V, 0.8V ≤ V_OUT ≤ 34V 15mm × 15mm × 2.8mm
30 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 950_Fo3_r5_m-7_o4_re1_i7_{nformation www.linear.com/LTC3780}
[phone] ^● FAX: [phone] ^● www.linear.com/LTC3780
3780ff
LT 0413 REV F • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2005