lt1949-1 Linear Technology Corporation, lt1949-1 Datasheet - Page 7

• Manufacturer Part Number: lt1949-1
• Description: 1.1mhz, 1a Switch Pwm Dc/dc Converter
• Manufacturer: Linear Technology Corporation

PACKAGE DESCRIPTIO
TYPICAL APPLICATIO
(0.18)
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
0.007
4V TO 9V
* DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH,
PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
V
IN
U
C1, C2: TAIYO YUDEN EMK316BJ475ML
C3: TAIYO YUDEN JMK316BJ106ML
D1: MOTOROLA MBRM120LT3
L1, L2: SUMIDA CR32-100KC
U
C1
4.7 F
16V
0.021 0.006
(0.53 0.015)
Dimensions in inches (millimeters) unless otherwise noted.
1M
1M
4 Cell to 5V SEPIC Converter
0 – 6 TYP
SHDN
(LTC DWG # 05-08-1660)
V
V
8-Lead Plastic MSOP
IN
C
40.2k
LT1949-1
330pF
MS8 Package
10 H
L1
SEATING
GND
SW
PLANE
FB
(3.00 0.102)
0.193 0.006
0.118 0.004*
(4.90 0.15)
4.7 F
16V
C2
0.040 0.006
(1.02 0.15)
(0.30)
0.012
REF
L2
10 H
0.0256
(0.65)
BSC
D1
1
8
7 6 5
2 3
100k
1%
33.2k
1%
4
(0.86 0.102)
0.034 0.004
(3.00 0.102)
0.118 0.004**
1949-1 TA02
(0.15 0.102)
0.006 0.004
C3
10 F
6.3V
V
5V
250mA
MSOP (MS8) 1098
OUT
LT1949-1
7