LT1949 LINER [Linear Technology], LT1949 Datasheet - Page 8

• Manufacturer Part Number: LT1949
• Description: 600kHz, 1A Switch PWM DC/DC Converter
• Manufacturer: LINER [Linear Technology]

TYPICAL APPLICATIO
RELATED PARTS
LT1949
PART NUMBER
LT1054
LT1302
LT1304
LT1307B
LT1308B
LT1317B
LTC
LT1613
LTC1682
LTC1754
8
®
1516
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
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
3.3V
V
IN
+
C1: AVX TAJB226M010
C2: TAIYO YUDEN TMK432BJ106MN X7R 1210
C4, C5, C6: TAIYO YUDEN LMK316BJ475ML X5R1206
C7, C8, C9: 0.1 F CERAMIC, 50V
D1 TO D6: FMMD7000, DUAL DIODE
D7: MBRM120LT3
L1: SUMIDA CDRH62B-100
C1
22 F
SHUTDOWN
U
Low Profile Triple Output LCD Bias Generator
SHDN
LBI
LB0
V
V
IN
C
R1
47k
LT1949
C3
680pF
10 H
L1
GND
SW
FB
D1
4.7 F
COMMENTS
Up to 100mA Output with No Inductors
5V/600mA from 2V, 2A Internal Switch, 200 A I
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
12 A I
3.3V to 5V at 200mA, SOT-23 Package
3.3V and 5V Outputs with 60 V
Up to 50mA Output, I
D2
C7
0.1 F
C6
D7
Q
, No Inductors, 5V at 50mA from 3V Input
R2
40.2k
1%
R3
7.5k
1%
D5
D6
C8
0.1 F
D3
Q
= 13 A, SOT-23 Package
D4
C9
0.1 F
C2
10 F
C5
4.7 F
1949 TA01
RMS
C4
4.7 F
1949f LT/TP 0300 4K • PRINTED IN THE USA
Noise, Up to 80mA Output
–8V
10mA
23V
5mA
LINEAR TECHNOLOGY CORPORATION 1999
8V
200mA
Q