LT1949-1EMS8TR Linear Technology, LT1949-1EMS8TR Datasheet - Page 7

• Manufacturer Part Number: LT1949-1EMS8TR
• Description: IC PWM DC/DC CONV 1A SWTCH 8MSOP
• Manufacturer: Linear Technology
• Type: Step-Up (Boost)r

Specifications of LT1949-1EMS8TR

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: Adj to 28V
• Current - Output: 1A
• Frequency - Switching: 1.1MHz
• Voltage - Input: 1.7 ~ 12 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Other names: LT19491EMS8TR

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