LT1949 Ver la hoja de datos (PDF) - Linear Technology
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LT1949 Datasheet PDF : 8 Pages
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LT1949
TYPICAL APPLICATIO
Low Profile Triple Output LCD Bias Generator
D1
D2
D3
D4
23V
5mA
C7
0.1µF
C8
0.1µF
C9
0.1µF
L1
VIN
10µH
D7
3.3V
SHUTDOWN
+
C1
22µF
VIN
SW
SHDN
LBI LT1949
LB0
FB
VC
GND
R1
47k
C3
680pF
C6
4.7µF
C1: AVX TAJB226M010
C2: TAIYO YUDEN TMK432BJ106MN X7R 1210
C4, C5, C6: TAIYO YUDEN LMK316BJ475ML X5R1206
C7, C8, C9: 0.1µF CERAMIC, 50V
D1 TO D6: FMMD7000, DUAL DIODE
D7: MBRM120LT3
L1: SUMIDA CDRH62B-100
R2
40.2k
1%
R3
7.5k
1%
D5
D6
8V
200mA
C2
10µF
C4
4.7µF
C5
4.7µF
–8V
10mA
1949 TA01
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PART NUMBER
LT1054
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LT1304
LT1307B
LT1308B
LT1317B
LTC®1516
LT1613
LTC1682
LTC1754
DESCRIPTION
High Power Regulated Charge Pump
High Output Current Micropower DC/DC Converter
2-Cell Micropower DC/DC Converter
Single Cell Micropower 600kHz PWM DC/DC Converter
2A 600kHz PWM DC/DC Converter
Micropower, 600kHz PWM DC/DC Converter
2-Cell to 5V Regulated Charge Pump
Single Cell 1.4MHz PWM DC/DC Converter
Doubler Charge Pump with Low Noise Linear Regulator
Micropower 3.3V/5V Charge Pump with Shutdown
COMMENTS
Up to 100mA Output with No Inductors
5V/600mA from 2V, 2A Internal Switch, 200µA IQ
Low-Battery Detector Active in Shutdown
3.3V at 75mA from 1 Cell, MSOP Package
TSSOP Package
2 Cells to 3.3V at 200mA, MSOP Package
12µA IQ, No Inductors, 5V at 50mA from 3V Input
3.3V to 5V at 200mA, SOT-23 Package
3.3V and 5V Outputs with 60µVRMS Noise, Up to 80mA Output
Up to 50mA Output, IQ = 13µA, SOT-23 Package
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Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900q FAX:(408)434-0507 q www.linear-tech.com
1949f LT/TP 0300 4K • PRINTED IN THE USA
© LINEAR TECHNOLOGY CORPORATION 1999
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