Datasheet
12
LT1373
LINEAR TECHNOLOGY CORPORATION 1995
sn1373 1373fbs LT/TP 0200 2K REV B • PRINTED IN THE USA
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LT1172 100kHz 1.25A Boost Switching Regulator Also for Flyback, Buck and Inverting Configurations
LTC
®
1265 13V 1.2A Monolithic Buck Converter Includes PMOS Switch On-Chip
LT1302 Micropower 2A Boost Converter Converts 2V to 5V at 600mA
LT1308A/LT1308B 600kHz 2A Switch DC/DC Converter 5V at 1A from a Single Li-Ion Cell
LT1370 500kHz High Efficiency 6A Boost Converter 6A, 0.065Ω Internal Switch
LT1372 500kHz 1.5A Boost Switching Regulator Also Regulates Negative Flyback Outputs
LT1374 4.5A, 500kHz Step-Down Converter 4.5A, 0.07Ω Internal Switch
LT1376 500kHz 1.5A Buck Switching Regulator Handles Up to 25V Inputs
LT1377 1MHz 1.5A Boost Switching Regulator Only 1MHz Integrated Switching Regulator Available
LT1613 1.4MHz Switching Regulator in 5-Lead SOT-23 5V at 200mA from 4.4V Input
LT1615 Micropower Step-Up DC/DC in 5-Lead SOT-23 20µA I
Q
, 36V, 350mA Switch
LT1949 600kHz, 1A Switch PWM DC/DC Converter 1.1A, 0.5Ω, 30V Internal Switch, V
IN
as Low as 1.5V
D2
1N4148
Q2
1N5818
D1
1N4148
562Ω*
20k
DIMMING
10k
330Ω
10
12345
Q1
10µF
C1
0.1µF
V
IN
4.5V
TO 30V
V
IN
V
SW
V
FB
V
C
GND
S/S
5
84
2
16, 7
LT1373
2µF
0.1µF
L1
100µH
T1
LT1372 • TA06
C1 = WIMA MKP-20
L1 = COILCRAFT D03316-104
T1 = COILTRONICS CTX 110609
* = 1% FILM RESISTOR
DO NOT SUBSTITUTE COMPONENTS
Q1, Q2 = ZETEX ZTX849 OR ROHM 2SC5001
LAMP
C2
27pF
5mA MAX
2.2µF
2.7V TO
5.5V
22k
1N4148
OPTIONAL REMOTE
DIMMING
COILTRONICS (407) 241-7876
COILCRAFT (708) 639-6400
ON
OFF
CCFL BACKLIGHT APPLICATION CIRCUITS
CONTAINED IN THIS DATA SHEET ARE
COVERED BY U.S. PATENT NUMBER 5408162
AND OTHER PATENTS PENDING
+
+
+
90% Efficient CCFL Supply
LT1373
V
IN
V
C
V
IN
4V TO 9V
1
2
†
MAX I
OUT
C1 = AVX TPSD 336M020R0200
C2 = TOKIN 1E225ZY5U-C203-F
C3 = AVX TPSD 107M010R0100
L1 = COILTRONICS CTX33-2, SINGLE
INDUCTOR WITH TWO WINDINGS
8
5
4
6, 7
GND
FB
LT1373 • TA07
V
SW
S/S
D1
MBRS130LT3
C1
33µF
20V
C4
0.01µF
C2
2.2µF
R1
5k
R3
24.9k
1%
R2
75k
1%
V
OUT
†
5V
ON
OFF
V
IN
4V
5V
7V
9V
I
OUT
0.45A
0.55A
0.65A
0.72A
L1A
33µH
•
L1B
33µH
•
C3
100µF
10V
+
+
Two Li-Ion Cells to 5V SEPIC Conveter
TYPICAL APPLICATIO S
U
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear-tech.com