LT1074 Linear Technology, LT1074 Datasheet - Page 16

• Manufacturer Part Number: LT1074
• Description: Step-Down Switching Regulator
• Manufacturer: Linear Technology

PACKAGE DESCRIPTIO
RELATED PARTS
PART NUMBER
LT1375/LT1376
LT1374/LT1374HV
LT1370
LT1676
LT1339
LT1074/LT1076
TYPICAL APPLICATIO
16
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
DESCRIPTION
1.5A, 500kHz Step-Down Switching Regulators
4.5A, 500kHz Step-Down Switching Regulators
6A, 500kHz High Efficiency Switching Regulator
Wide Input Range, High Efficiency Step-Down Regulator
High Power Synchronous DC/DC Controller
(9.906 – 10.541)
(11.684 – 12.700)
0.390 – 0.415
0.460 – 0.500
BSC
(1.27)
0.050
–5V TO –15V
U
200 F
V
15V
IN
C3
U
**
*
+
MBR735
I
ON INPUT VOLTAGE. SEE AN44
OUT
(0.660 – 0.914)
0.026 – 0.036
(5.842 – 6.858)
(8.382 – 9.398)
(MAX) = 1A TO 3A DEPENDING
0.230 – 0.270
0.330 – 0.370
Dimensions in inches (millimeters) unless otherwise noted.
GND
7-Lead Plastic TO-220 (Standard)
(3.734 – 3.937)
LT1074
0.147 – 0.155
V
Negative Boost Converter
IN
(14.478 – 15.748)
V
DIA
C
0.570 – 0.620
(LTC DWG # 05-08-1422)
V
V
0.01 F
FB
SW
(6.604 – 8.128)
0.260 – 0.320
T7 Package
SEATING PLANE
R3
750
C2
1nF
(3.860 – 5.130)
0.152 – 0.202
(17.780 – 18.491)
L1
25 H
0.700 – 0.728
COMMENTS
V
V
6A/42V Internal Switch, 7-Lead DD/TO-220
V
V
(3.429 – 4.191)
0.135 – 0.165
IN
IN
IN
IN
OPTIONAL OUTPUT FILTER
Up to 25V, I
Up to 25V (32V for HV), I
from 7.4V to 60V, I
Up to 60V, I
100pF
5 H
(4.191 – 4.572)
0.165 – 0.180
D1*
+
(15.75)
0.620
TYP
R1
12.7k
R2
2.21k
100 F
OUT
OUT
+
*MEASURED AT THE SEATING PLANE
Up to 1.25A, SO-8
Up to 50A, Current Mode
C1
1000 F
25V
OUT
LT1074 • TA04
V
–15V**
(3.937 – 4.953)
OUT
0.155 – 0.195*
(0.330 – 0.584)
0.013 – 0.023
(2.413 – 2.921)
0.095 – 0.115
Up to 0.5A, SO-8
(1.143 – 1.397)
0.045 – 0.055
OUT
1074fc LT/TP 0100 2K REV C • PRINTED IN USA
Up to 4.25A, SO-8/DD
LINEAR TECHNOLOGY CORPORATION 1994
T7 (TO-220) 0399