lt1373hv Linear Technology Corporation, lt1373hv Datasheet - Page 12

• Manufacturer Part Number: lt1373hv
• Description: 250khz Low Supply Current High Efficiency 1.5a Switching Regulator
• Manufacturer: Linear Technology Corporation

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LT1373
PART NUMBER
LT1172
LTC
LT1302
LT1308A/LT1308B
LT1370
LT1372
LT1374
LT1376
LT1377
LT1613
LT1615
LT1949
12
TYPICAL APPLICATIO S
Q1, Q2 = ZETEX ZTX849 OR ROHM 2SC5001
DO NOT SUBSTITUTE COMPONENTS
COILTRONICS [phone]
COILCRAFT [phone]
2.7V TO
TO 30V
OFF
4.5V
5.5V
C1 = WIMA MKP-20
L1 = COILCRAFT D03316-104
T1 = COILTRONICS CTX 110609
®
V
* = 1% FILM RESISTOR
1265
IN
ON
+
+
4
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
2.2 F
10 F
S/S
GND
6, 7
LT1373
V
90% Efficient CCFL Supply
IN
330
5
5
1N5818
DESCRIPTION
100kHz 1.25A Boost Switching Regulator
13V 1.2A Monolithic Buck Converter
Micropower 2A Boost Converter
600kHz 2A Switch DC/DC Converter
500kHz High Efficiency 6A Boost Converter
500kHz 1.5A Boost Switching Regulator
4.5A, 500kHz Step-Down Converter
500kHz 1.5A Buck Switching Regulator
1MHz 1.5A Boost Switching Regulator
1.4MHz Switching Regulator in 5-Lead SOT-23
Micropower Step-Up DC/DC in 5-Lead SOT-23
600kHz, 1A Switch PWM DC/DC Converter
+
27pF
V
V
C2
V
C
SW
1
FB
2 F
4
8
2
Q1
CCFL BACKLIGHT APPLICATION CIRCUITS
CONTAINED IN THIS DATA SHEET ARE
COVERED BY U.S. PATENT NUMBER 5408162
AND OTHER PATENTS PENDING
OPTIONAL REMOTE
3
10
DIMMING
5mA MAX
0.1 F
LAMP
C1
U
2
22k
1N4148
L1
100 H
Q2
562 *
1
20k
DIMMING
T1
10k
D2
1N4148
0.1 F
LT1372 • TA06
D1
1N4148
+
COMMENTS
Also for Flyback, Buck and Inverting Configurations
Includes PMOS Switch On-Chip
Converts 2V to 5V at 600mA
5V at 1A from a Single Li-Ion Cell
6A, 0.065 Internal Switch
Also Regulates Negative Flyback Outputs
4.5A, 0.07 Internal Switch
Handles Up to 25V Inputs
Only 1MHz Integrated Switching Regulator Available
5V at 200mA from 4.4V Input
20 A I
1.1A, 0.5 , 30V Internal Switch, V
OFF
C1
33 F
20V
Q
, 36V, 350mA Switch
ON
C1 = AVX TPSD 336M020R0200
C2 = TOKIN 1E225ZY5U-C203-F
C3 = AVX TPSD 107M010R0100
L1 = COILTRONICS CTX33-2, SINGLE
4
S/S
INDUCTOR WITH TWO WINDINGS
Two Li-Ion Cells to 5V SEPIC Conveter
GND
6, 7
4V TO 9V
LT1373
V
V
IN
IN
sn1373 1373fbs LT/TP 0200 2K REV B • PRINTED IN THE USA
5
V
V
SW
C
FB
1
R1
5k
C4
0.01 F
8
2
IN
•
as Low as 1.5V
L1A
33 H
LINEAR TECHNOLOGY CORPORATION 1995
2.2 F
C2
†
0.45A
0.55A
0.65A
0.72A
MAX I
I
OUT
MBRS130LT3
•
L1B
33 H
OUT
V
4V
5V
7V
9V
D1
IN
R2
75k
1%
R3
24.9k
1%
+
LT1373 • TA07
C3
100 F
10V
V
5V
OUT
†