LTC1502IS8-3.3 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC1502IS8-3.3 Datasheet PDF : 8 Pages
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LTC1502-3.3
TYPICAL APPLICATIONS
Single Cell to 3.3V DC/DC Converter with Shutdown
SHDN
10µF
100Ω
1
C2
2 C1+
8
VOUT
C3+ 7
1µF 3
LTC1502-3.3
C1–/SHDN C3 –
6
4
GND
5
VIN
1µF
10µF
VOUT = 3.3V
10µF IOUT = 10mA
SINGLE CELL
NiCd OR
ALKALINE
µCONTROLLER
1502-3.3 TA03
Single Cell Battery Backup Supply with Autoswitchover and No Reverse Current
MAIN
SUPPLY
5V
3
1
LT1521-3.3
1µF
2
VOUT = 3.3V
IOUT = 300mA
(IOUT = 10mA
IN BACKUP MODE)
TRICKLE
CHARGE
150k
1 CELL
NiCd
10µF
10µF
1
C2
7 C3+
8
VOUT
C1+ 2
1µF 6
LTC1502-3.3
C3 – C1–/SHDN
3
5
VIN
4
GND
1.1M
470k
3.9V VTRIP*
*REFERRED TO MAIN SUPPLY
7
LTC1540
3
+
8
4
–
5
6
21
1µF
100Ω
10µF
Q1
2N7002
LOGIC LOW =
BACKUP MODE
1502-3.3 TA04
RELATED PARTS
PART NUMBER
LT1307/LT1307B
LT1308A/LT1308B
LTC1517-3.3
LTC1558/LTC1559
LT1610
LT1611
LT1613
LT1615
LTC1682
DESCRIPTION
750mA Single Cell Micropower 600kHz PWM DC/DC Converter
2A Single Cell Micropower 600kHz PWM DC/DC Converter
Micropower Regulated 3.3V Charge Pump DC/DC Converter
Backup Battery Controller with Programmable Output
Single Cell Micropower 1.7MHz PWM DC/DC Converter
1.4MHz Inverting Switching Regulator
1.4MHz Boost Switching Regulator
Micropower Boost Switching Regulator
Low Noise Doubler Charge Pump
COMMENTS
3.3V at 75mA from 1 Cell, MSOP Package
3.3V at 300mA from 1 Cell, SO-8 Package
IOUT = 15mA (VIN ≥ 2.5V)
Uses Single NiCd Cell, 100mW Output (Min)
30µA IQ, MSOP Package
5V to – 5V at 150mA, Low Output Noise, SOT-23 package
5V at 200mA from 3.3V Input, SOT-23 Package
30µA IQ, VOUT Up to 34V, SOT-23 Package
60µVRMS Noise, IOUT Up to 50mA, MSOP
8
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 q FAX:(408)434-0507 q www.linear-tech.com
15023f LT/TP 0899 4K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1999
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