LT1269 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LT1269 Datasheet PDF : 8 Pages
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LT1271/LT1269
TYPICAL APPLICATION
Negative Buck Converter
OPTIONAL
INTPUT
FILTER
+
C3*
100µF
L3
10µH
VIN
–8V TO –30V
×
D1
MBR735
VIN
VSW
LT1271
GND
VC FB
C1
R3
C2 +
100µF
L1**
100µH
R1
4.64k
×
LOAD
–5.2V AT 3.5A
12k
Q1
2N3906
R2
1.24k
OPTIONAL +
OUTPUT
FILTER
L2
4µH
C4
200µF
* REQUIRED IF INPUT LEADS ≥ 2"
** COILTRONICS CTX100-2-52
1271/69 TA05
RELATED PARTS
PART NUMBER
LT1171
LT1370
LT1371
LT1372
LT1374
LT1376
DESCRIPTION
100kHz, 2.5A Boost Switching Regulator
500kHz, 6A Boost Switching Regulator
500kHz, 3A Boost Switching Regulator
500kHz, 1.5A Boost Switching Regulator
500kHz, 4.5A Buck Switching Regulator
500kHz, 1.5A Buck Switching Regulator
COMMENTS
Good for VIN Up to 40V
6A, 42V Internal Switch
3A, 42V Internal Switch, 90% Efficiency
Also Regulates Negative Flyback Outputs
VIN Up to 25V, SO-8 Package
VIN Up to 25V, Uses 4.7µH Inductor
8
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900q FAX:(408)434-0507 q www.linear-tech.com
127169fb LT/TP 0798 2K REV B • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1992
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