LTC3780EG Linear Technology, LTC3780EG Datasheet - Page 28

• Manufacturer Part Number: LTC3780EG
• Description: IC,SMPS CONTROLLER,CURRENT-MODE,CMOS,SSOP,24PIN,PLASTIC
• Manufacturer: Linear Technology

TYPICAL APPLICATIO
LTC3780
28
RELATED PARTS
PART NUMBER
LT1074HV/LT1076HV
LT1339
LTC1702A
LTC1735
LTC1778
LT1956
LT3010
LT3430/LT3431
LT3433
LTC
LTC3703
®
3443
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
3300pF
6.8nF
C
C
SS
C1
20k
R1
47pF
C
C
0.01µF
C2
STBYMD
R2 280k
5.6k
ON/OFF
INTV
R
DESCRIPTION
Monolithic 5A/2A Step-Down DC/DC Converters
High Power Synchronous DC/DC Controller
Dual, 2-Phase Synchronous DC/DC Controller
Synchronous Step-Down DC/DC Controller
No R
Monolithic 1.5A, 500kHz Step-Down Regulator
50mA, 3V to 80V Linear Regulator
Monolithic 3A, 200kHz/500kHz Step-Down Regulator
Monolithic Step-Up/Step-Down DC/DC Converter
Monolithic Buck-Boost Converter
100V Synchronous DC/DC Controller
C
●
FAX: [phone]
CC
SENSE
68pF
Synchronous DC/DC Controller
10
11
12
1
2
3
4
5
6
7
8
9
U
PGOOD
SS
SENSE
SENSE
I
V
SGND
RUN
FCB
PLLFLTR
PLLIN
STBYMD
TH
OSENSE
Figure 12. LTC3780 12V/3A, Buck-Boost Regulator
●
LTC3780
www.linear.com
+
–
R
PU
BOOST1
BOOST2
EXTV
INTV
PGND
SW1
SW2
TG1
BG1
BG2
TG2
V
CC
CC
IN
100Ω
24
23
22
21
20
19
18
17
16
15
14
13
100Ω
V
PULLUP
D
1N5819HW
A
D
1N5819HW
B
0.22µF
C
A
COMMENTS
V
4V ≤ V
5.5V ≤ V
Single Inductor
V
550kHz Operation, No R
3.5V ≤ V
5.5V ≤ V
1.275V ≤ V
4V ≤ V
2.4V ≤ V
V
10Ω
IN
IN
IN
C
C
up to 60V, Drivers 10,000pF Gate Capacitance, I
up to 60V, TO-220 and DD Packages
up to 100V, 9.3V to 15V Gate Drive Supply
VCC
F
0.1µF
IN
IN
4.7µF
10mΩ
IN
IN
IN
IN
≤ 36V, Fast Transient Response, Current Mode, I
≤ 60V, 500mA Switch, Automatic Step-Up/Step-Down,
≤ 36V, 0.8V ≤ V
≤ 60V, 2.5mA Supply Current, 16-Pin SSOP
OUT
≤ 60V, 0.1Ω Saturation Switch, 16-Pin SSOP
≤ 5.5V, 96% Efficiency, 600kHz Operation, 2A Switch
≤ 60V, No Protection Diode Required, 8-Lead MSOP
C
B
0.22µF
SENSE
OUT
, 3V ≤ V
D
Si7884DP
C
Si7884DP
B
Si7884DP
A
Si7884DP
© LINEAR TECHNOLOGY CORPORATION 2005
≤6V, Current Mode, I
LT/TP 0305 500 • PRINTED IN THE USA
B320A
IN
B320A
6.8µF
D1
D2
≤ 7V, I
L
3780 TA02
OUT
C
200µF
C
47µF
OUT
IN
≤ 20A
OUT
V
OUT
IN
V
12V
5A
≤ 20A
≤ 20A
OUT
OUT
≤ 20A
3780f