8

LTC1522

1522f LT/TP 0198 4K • PRINTED IN USA

© LINEAR TECHNOLOGY CORPORATION 1997

Linear Technology Corporation

PART NUMBER

DESCRIPTION

COMMENTS

LTC1144

20mA Switched Capacitor Converter for Up to 20V Inputs

Includes Micropower Shutdown (8

µA)

LTC1262

5V to 12V Regulated Switched Capacitor Converter

Up to 30mA at Regulated Output

LTC1514/15

Step-Up/Step-Down Switched Capacitor DC/DC Converters

LTC1516

Micropower, Regulated 5V Charge Pump DC/DC Converter

LTC1517-5

Micropower, Regulated 5V Charge Pump DC/DC Converter

LTC1522 Without Shutdown and Packaged in SOT-23

LTC1555/56

SIM Power Supply and Level Translator

Step-Up/Step-Down SIM Power Supply and Level Translators

LTC660

100mA CMOS Voltage Converter

5V to – 5V Conversion with Low Voltage Loss

RELATED PARTS

1

2

7

4

8

3

6

5

NC

LTC1522

10

µF

B

A

Q1

D1

0.22

µF

(SEE TRUTH TABLE)

D1 = BAS70-05

Q1 = Si6943DQ

TRUTH TABLE

A

B

0

0

NOT USED

0

1

3V

1

0

5V

1

1 SHUTDOWN

+

10

µF

R1

470k

+

1522 TA03

SHDN

NC

GND

SIM CARD

RST

CLK

I/O

GND

LEVEL SHIFT

3V

GSM

CONTROLLER

Programmable 5V/3V SIM Interface Supply for GSM Cellular Phones