Datasheet

7
LT1944-1
TYPICAL APPLICATIO S
U
Dual Output (5V, 24V) Boost Converter
PACKAGE DESCRIPTIO
U
MSOP (MS10) 1100
* 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
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
0.021
± 0.006
(0.53 ± 0.015)
0
° – 6° TYP
SEATING
PLANE
0.007
(0.18)
0.043
(1.10)
MAX
0.007 – 0.011
(0.17 – 0.27)
0.005
± 0.002
(0.13 ± 0.05)
0.034
(0.86)
REF
0.0197
(0.50)
BSC
12
3
45
0.193 ± 0.006
(4.90 ± 0.15)
8910
7
6
0.118 ± 0.004*
(3.00 ± 0.102)
0.118 ± 0.004**
(3.00 ± 0.102)
MS10 Package
10-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1661)
V
IN
SW1
FB2
LT1944-1
4
3
L1
22µH
D1
SHDN2
53.6k
1M
C2
1µF
24V
1mA
5V
40mA
V
IN
2.7V
TO 4.2V
C1, C3: TAIYO YUDEN JMK212BJ475
C2: TAIYO YUDEN TMK316BJ105
D1, D2: CENTRAL SEMI CMDSH-3
L1, L2: MURATA LQH3C220
[phone]
[phone]
[phone]
[phone]
1944-1 TA02
GND
7
PGND
9
PGND
6
810
SW2
4.7pF
C1
4.7µF
FB1
2
5
1
SHDN1
L2
22µH
D2
1M
324k
4.7pF
C3
4.7µF
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.