LT4180
18
4180fb
For more information www.linear.com/4180
LINEAR TECHNOLOGY CORPORATION 2010
LT 0413 REV B • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/4180
Typical applicaTion
relaTeD parTs
PART NUMBER DESCRIPTION COMMENTS
LT3581 Boost/Inverting DC/DC Converter with 3.3A Switch,
Soft-Start and Synchronization
2.5V ≤ V
IN
≤ 22V, Current Mode Control, 200kHz to 2.5MHz, MSOP-16E and
3mm × 4mm DFN-14 Packages
LT3685 36V, 2A, 2.4MHz Step-Down Switching Regulator 3.6V≤ V
IN
≤ 36V (60V
PK
), Integrated Boost Diode, MSOP-10E and
3mm × 3mm DFN Packages
LT3573 Isolated Flyback Switching Regulator with 60V
Integrated Switch
3V ≤ V
IN
≤ 40V, Up to 7W, No Opto-Isolator or Third Winding Required,
MSOP-16E Package
LT3757 Boost, Flyback, SEPIC and Inverting Controller 2.9V ≤ V
IN
≤ 40V, Current Mode Control, 100kHz to 1MHz Programmable
Operation Frequency, MSOP-10E and 3mm × 3mm DFN-10 Packages
LT3758 Boost, Flyback, SEPIC and Inverting Controller 5.5V ≤ V
IN
≤ 100V, Current Mode Control, 100kHz to 1MHz Programmable
Operation Frequency, MSOP-10E and 3mm × 3mm DFN-10 Packages
LTC3805/
LTC3805-5
Adjustable Fixed 70kHz to 700kHz Operating
Frequency Flyback Controller
V
IN
and V
OUT
Limited Only by External Components, MSOP-10E and
3mm × 3mm DFN-10 Packages
R13
28k
1%
R10
5.36k
1%
OV
FB
DIV0DIV1
V
IN
V
IN
22V TO 36V
GND
V
IN
BD
E1
E3
INTV
CC
INTV
CC
INTV
CC
V
PP
COMP GND
DRAIN
DIV2
CHOLD1 CHOLD2GUARD2 GUARD3 GUARD4CHOLD3 CHOLD4
C13
47nF
4180 TA05
RUN
R
OSC
C
OSC
R9
2.01k
1%
D1
DFLS240
D2
CMDSH-3
SENSE
SPREAD
LT4180EGN
C14
330pF
C12
470pF
C11
470pF
C10
47nF
C9
47pF
UI
LT3685EDD
OUTPUT TO WIRING AND LOAD
12V, 1.5A
2.5Ω MAX R
WIRE
470µF LOAD CAPACITANCE
C4
1µF
R12
22.1k
1%
C15
3.3nF
R6
3.65k
1%
R4
61.9k
1%
VISHAY
1HLP2020CZ-11
C8
1µF
R1
0.067Ω
1%
BOOST
SYNC
RT
FB
VC
SW
PG
RUN/SD
C7
22µF
25V
R11
1k
C5
0.1µF
50V
C1
22µF
50V
C2
1µF
50V
R3
100k
R8
68.1k
1%
+
INTV
CC
R5
30.1k
R7
10k
OSC
C6
0.47µF
L1, 10µH
12V 1.5A Buck Regulator
