LT1944 Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Fabricante
LT1944 Datasheet PDF : 8 Pages
| |||
LT1944
TYPICAL APPLICATIO
Four Output Power Supply for Color LCD Displays
C6
D3A 2.2µF
D3B
Q1
C7
0.1µF
Q2
140k
–6.5V
500µA
VIN
2.7V
TO 4.2V
C1
4.7µF
D2B
C3
0.1µF
C4
L1
10µH
0.1µF
D1
D2A
8
10
VIN
SW1
1M
2
1
SHDN1
FB1
LT1944
4
5
SHDN2
FB2
140k
GND PGND PGND SW2
37 96
C8
1µF
L2
10µH
D4
5 WHITE LEDs
C1: TAIYO YUDEN JMK212BJ475
C2, C6: TAIYO YUDEN LMK212BJ225
C3, C4, C7: TAIYO YUDEN EMK107BJ104
C5, C8: TAIYO YUDEN TMK316BJ105
D1, D4: ON SEMI MBR0530
D2, D3: ZETEX BAT54S
L1, L2: SUMIDA CLQ4D10-100
Q1, Q2: ON SEMI MMBT3906
(408) 573-4150
(408) 573-4150
(408) 573-4150
(408) 573-4150
(800) 282-9855
(631) 543-7100
(847) 956-0666
(800) 282-9855
20V
C5 500µA
1µF
10V
5mA
C2
2.2µF
82.5Ω
15mA
1944 TA03
RELATED PARTS
PART NUMBER
DESCRIPTION
LT1307
Single-Cell Micropower 600kHz PWM DC/DC Converter
LT1316
Burst Mode® Operation DC/DC with Programmable Current Limit
LT1317
2-Cell Micropower DC/DC with Low-Battery Detector
LT1610
Single-Cell Micropower DC/DC Converter
LT1611
1.4MHz Inverting Switching Regulator in 5-Lead SOT-23
LT1613
1.4MHz Switching Regulator in 5-Lead SOT-23
LT1615
Micropower DC/DC Converter in 5-Lead SOT-23
LT1617
Micropower Inverting DC/DC Converter in 5-Lead SOT-23
LT1930A
2.2MHz Boost DC/DC Converter in SOT-23
Burst Mode is a registered 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 SOT-23 Package
5V at 200mA from 3.3V Input, Tiny SOT-23 Package
20V at 12mA from 2.5V Input, Tiny SOT-23 Package
–15V at 12mA from 2.5V Input, Tiny SOT-23 Package
5V at 450mA from 3.3V, Tiny SOT-23 Package
8
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 q FAX: (408) 434-0507 q www.linear.com
1944f LT/TP 1001 2K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2001
Share Link: 