LT1944-1 查看數據表（PDF） - Linear Technology
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LT1944-1 Datasheet PDF : 8 Pages
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LT1944-1
TYPICAL APPLICATIO
Four Output Power Supply (±5V, ±15V)
VIN
2.7V
TO 4.2V
C1
4.7µF
D5
L1
22µH
C6
0.1µF D6
D1
8
VIN
4
SHDN2
6
4.7pF
SW2
1M
5
FB2
LT1944-1
2
1
SHDN1
FB1
324k
GND PGND PGND SW1
3 7 9 10
–5V
C7 20mA
4.7µF
5V
20mA
C2
4.7µF
178k
L2
22µH
C1, C2, C7: TAIYO YUDEN JMK212BJ475
C3, C4: TAIYO YUDEN EMK212BJ105
C5, C6: TAIYO YUDEN EMK107BJ104
D1, D2, D3, D4, D5, D6: CENTRAL SEMI CMDSH3
L1, L2: MURATA LQH3C220
4.7pF
2M
D2
D3
C5
0.1µF
D4
C3
1µF
15V
2mA
C4
1µF
–15V
1944-1 TA03 2mA
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Burst Mode is a trademark of Linear Technology Corporation
COMMENTS
3.3V at 75mA from One Cell, MSOP Package
1.5V Minimum, Precise Control of Peak Current Limit
3.3V at 200mA from Two Cells, 600kHz Fixed Frequency
3V at 30mA from 1V, 1.7MHz Fixed Frequency
– 5V at 150mA from 5V Input, Tiny ThinSOT Package
5V at 200mA from 3.3V Input, Tiny ThinSOT Package
20V at 12mA from 2.5V Input, Tiny ThinSOT Package
–15V at 12mA from 2.5V Input, Tiny ThinSOT Package
5V at 450mA from 3.3V, Tiny ThinSOT Package
5V at 80mA and 30V at 8mA, MSOP Package
8
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 q FAX: (408) 434-0507 q www.linear.com
19441f LT/TP 0801 2K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2001
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