LT1949 LINER [Linear Technology], LT1949 Datasheet - Page 7

• Manufacturer Part Number: LT1949
• Description: 600kHz, 1A Switch PWM DC/DC Converter
• Manufacturer: LINER [Linear Technology]

TYPICAL APPLICATIO
PACKAGE DESCRIPTIO
(0.203 – 0.254)
**
0.008 – 0.010
*
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
(0.254 – 0.508)
0.010 – 0.020
(0.18)
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
0.007
* 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
(0.406 – 1.270)
0.016 – 0.050
45
(0.53 0.015)
0.021 0.006
4V TO 9V
0 – 8 TYP
V
IN
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
0 – 6 TYP
U
C1
4.7 F
16V
U
(1.346 – 1.752)
0.053 – 0.069
(0.355 – 0.483)
0.014 – 0.019
8-Lead Plastic Small Outline (Narrow 0.150)
SEATING
PLANE
Dimensions in inches (millimeters) unless otherwise noted.
TYP
1M
1M
0.040 0.006
(1.02 0.15)
4 Cell to 5V SEPIC Converter
(0.30)
0.012
SHDN
REF
V
V
(LTC DWG # 05-08-1660)
IN
C
(LTC DWG # 05-08-1610)
8-Lead Plastic MSOP
33k
LT1949
3.3nF
0.0256
(0.65)
10 H
BSC
MS8 Package
L1
S8 Package
GND
SW
FB
4.7 F
16V
C2
(1.270)
0.050
(0.86 0.102)
0.034 0.004
BSC
(0.101 – 0.254)
0.004 – 0.010
(0.15 0.102)
0.006 0.004
L2
10 H
D1
(5.791 – 6.197)
1M
1%
332k
1%
0.228 – 0.244
0.193 0.006
(3.00 0.102)
0.118 0.004*
(4.90 0.15)
1949 TA02
C1, C2: TAIYO YUDEN EMK316BJ475ML
C3: TAIYO YUDEN JMK316BJ106ML
D1: MOTOROLA MBRM120LT3
L1, L2: SUMIDA CR32-100KC
C3
10 F
6.3V
V
5V
250mA
OUT
8
1
1
8
(4.801 – 5.004)
0.189 – 0.197*
7
2
7 6 5
2 3
6
4
3
MSOP (MS8) 1098
(3.00 0.102)
0.118 0.004**
5
4
LT1949
(3.810 – 3.988)
0.150 – 0.157**
SO8 1298
7