LT1372/LT1377
TYPICAL APPLICATIONS N
U
2 Li-Ion Cell to 5V SEPIC Converter
V
IN
4V TO 9V
L1A*
10µH
5
MBRS130LT3
V
IN
†
•
4
8
2
V
OUT
5V
ON
V
C1 = AVX TPSD 336M020R0200
C2 = TOKIN 1E105ZY5U-C103-F
C3 = AVX TPSD107M010R0100
S/S
SW
OFF
C1
33µF
20V
R2
C2
1µF
LT1372/LT1377
18.7k
1%
FB
+
+
C3
*SINGLE INDUCTOR WITH TWO WINDINGS
•
100µF
GND
6, 7
V
C
COILTRONICS CTX10-1
†
10V
L1B*
10µH
MAX I
OUT
1
I
V
IN
R3
6.19k
1%
OUT
R1
2k
0.45A 4V
0.55A 5V
0.65A 7V
0.72A 9V
C5
0.0047µF
C4
0.047µF
LT1372 • TA07
U
PACKAGE DESCRIPTION
Dimensions in inches (millimeters) unless otherwise noted.
S8 Package
N8 Package
8-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
0.400*
(10.160)
MAX
0.189 – 0.197*
(4.801 – 5.004)
7
5
8
6
8
7
6
5
4
0.255 ± 0.015*
(6.477 ± 0.381)
0.150 – 0.157**
(3.810 – 3.988)
0.228 – 0.244
(5.791 – 6.197)
1
2
3
0.130 ± 0.005
(3.302 ± 0.127)
0.300 – 0.325
(7.620 – 8.255)
0.045 – 0.065
(1.143 – 1.651)
1
0.053 – 0.069
2
3
4
0.010 – 0.020
(0.254 – 0.508)
× 45°
(1.346 – 1.752)
0.004 – 0.010
(0.101 – 0.254)
0.008 – 0.010
(0.203 – 0.254)
0.065
(1.651)
TYP
0°– 8° TYP
0.009 – 0.015
(0.229 – 0.381)
0.125
(3.175)
MIN
0.016 – 0.050
(0.406 – 1.270)
0.050
0.014 – 0.019
(0.355 – 0.483)
TYP
0.020
(0.508)
MIN
(1.270)
BSC
+0.035
–0.015
0.325
SO8 1298
0.018 ± 0.003
(0.457 ± 0.076)
0.100
(2.54)
BSC
+0.889
8.255
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
N8 1098
(
)
–0.381
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
RELATED PARTS
PART NUMBER DESCRIPTION
COMMENTS
LT1370
High Efficiency DC/DC Converter
42V, 6A, 500kHz Switch
LT1767
1.5A, 1.25MHz Step-Down Switching Regulator
High Efficiency Step-Down Switching Regulator
3V to 25V Input, V = 1.2V, Synchronizable Up to 2MHz, MSOP Package
REF
LT1374
25V, 4.5A, 500kHz Switch
LTC1735-1
LTC®3402
High Efficiency Step-Down Controller with Power Good
Output Fault Protection, 16-Pin SSOP and SO-8
Single Cell, High Current (2A), Micropower, Synchronous
3MHz Step-Up DC/DC Converter
V = 0.7V to 5V, Up to 95% Efficiency Synchronizable Oscillator
IN
from 100kHz to 3MHz
sn13727 13727fbs LT/TP 0401 2K REV B • PRINTED IN THE USA
LINEAR TECHNOLOGY CORPORATION 1995
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
12
●
●
(408)432-1900 FAX:(408)434-0507 www.linear-tech.com
Linear [ Linear ]
