Datasheet

8
LT1949
 LINEAR TECHNOLOGY CORPORATION 1999
1949f LT/TP 0300 4K • PRINTED IN THE USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear-tech.com
PART NUMBER DESCRIPTION COMMENTS
LT1054 High Power Regulated Charge Pump Up to 100mA Output with No Inductors
LT1302 High Output Current Micropower DC/DC Converter 5V/600mA from 2V, 2A Internal Switch, 200µA I
Q
LT1304 2-Cell Micropower DC/DC Converter Low-Battery Detector Active in Shutdown
LT1307B Single Cell Micropower 600kHz PWM DC/DC Converter 3.3V at 75mA from 1 Cell, MSOP Package
LT1308B 2A 600kHz PWM DC/DC Converter TSSOP Package
LT1317B Micropower, 600kHz PWM DC/DC Converter 2 Cells to 3.3V at 200mA, MSOP Package
LTC
®
1516 2-Cell to 5V Regulated Charge Pump 12µA I
Q
, No Inductors, 5V at 50mA from 3V Input
LT1613 Single Cell 1.4MHz PWM DC/DC Converter 3.3V to 5V at 200mA, SOT-23 Package
LTC1682 Doubler Charge Pump with Low Noise Linear Regulator 3.3V and 5V Outputs with 60µV
RMS
Noise, Up to 80mA Output
LTC1754 Micropower 3.3V/5V Charge Pump with Shutdown Up to 50mA Output, I
Q
= 13µA, SOT-23 Package
RELATED PARTS
V
IN
V
IN
3.3V
SW
FB
LT1949
L1
10µH
D7
R3
7.5k
1%
R2
40.2k
1%
R1
47k
1949 TA01
C2
10µF
C7
0.1µF
C8
0.1µF
C9
0.1µF
C4
4.7µF
C5
4.7µF
C1
22µF
C3
680pF
D5
D1 D2
–8V
10mA
8V
200mA
23V
5mA
D6
C6
4.7µF
V
C
GND
SHDNSHUTDOWN
LBI
LB0
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
+
D3 D4
Low Profile Triple Output LCD Bias Generator
TYPICAL APPLICATIO
U