LTC4557 datasheet(12/12 Pages) LINER

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LTC4557

4557f

LT/TP 0204 1K • PRINTED IN USA

©LINEAR TECHNOLOGY CORPORATION 2004

PART NUMBER

DESCRIPTION

COMMENTS

LTC1514

50mA, 650kHz, Step-Up/Down Charge Pump with

VIN: 2.7V to 10V, VOUT = 3V/5V, IQ = 60µA, ISD = 10µA, SO-8

Low-Battery Comparator

LTC1515

50mA, 650kHz, Step-Up/Down Charge Pump with

VIN: 2.7V to 10V, VOUT = 3.3V or 5V, IQ = 60µA, ISD < 1µA, SO-8

Power On Reset

LTC1555/LTC1556

SIM Power Supply and Level Translator for 3V/5V SIM Cards

VIN: 2.7V to 10V, VOUT = 3V/5V, Frequency = 650kHz, IQ = 60µA,

ISD < 1µA, SSOP16, SSOP20

LTC1555L

SIM Power Supply and Level Translator for 3V/5V SIM Cards

VIN: 2.6V to 6.6V, VOUT = 3V/5V, Frequency = 1MHz, IQ = 40µA,

ISD < 1µA, SSOP16

LTC1555L-1.8

SIM Power Supply and Level Translator for

VIN: 2.6V to 6.6V, VOUT = 1.8V/3V/5V, Frequency = 1MHz,

1.8V/3V/5V SIM Cards

IQ = 32µA, ISD < 1µA, SSOP16

LTC1755/LTC1756

Smart Card Interface with Serial Control for 3V/5V

VIN: 2.7V to 7V, VOUT = 3V/5V, IQ = 60µA, ISD < 1µA, SSOP16,

Smart Card Applications

SSOP24

LTC1955

Dual Smart Card Interface with Serial Control for 1.8V/3V/5V

VIN: 3V to 6V, VOUT = 1.8V/3V, IQ = 200µA, ISD < 1µA, QFN32

Smart Card Applications

LTC1986

SIM Power Supply for 3V/5V SIM Cards

VIN: 2.6V to 4.4V, VOUT = 3V/5V, Frequency = 900kHz, IQ = 14µA,

ISD < 1µA, ThinSOT

LTC3250-1.5

250mA, 1.5MHz, High Efficiency Step-Down Charge Pump

85% Efficiency, VIN: 3.1V to 5.5V, VOUT = 1.2V/1.5V, IQ = 35µA,

ISD < 1µA, ThinSOT

LTC3251

500mA, 1MHz to 16MHz, Spread Spectrum Step-Down

85% Efficiency, VIN: 3.1V to 5.5V, VOUT: 0.9V to 1.6V, 1.2V/1.5V,

Charge Pump

IQ = 9µA, ISD < 1µA, MS10

LTC4555

SIM Power Supply and Level Translator for 1.8V/3V SIM Cards

VIN: 3V to 6V, VOUT = 1.8V/3V, IQ = 40µA, ISD < 1µA, QFN16

LTC4556

Smart Card Interface with Serial Control for 1.8V/3V/5V

VIN: 2.7V to 5.5V, VOUT = 1.8V/3V/5V, IQ = 250µA, ISD < 1µA,

QFN24

RELATED PARTS

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 q FAX: (408) 434-0507 q www.linear.com

TYPICAL APPLICATIO

DVCC

VBATT

3V TO 6V

DVCC

1.2V TO 4.4V

LTC4557

µCONTROLLER

VCCA

CLKA

DVCC

RSTA

I/OA

GND

VCCB

CLKB

RSTB

I/OB

CLKIN

0.1

µF

RSTIN

DATA

ENABLE

0.1

µF

4557 TA02

1.8V/3V

SIM

CARD

1.8V/3V

SMART

CARD

VCC

CLK

RST

I/O

GND

VCC

CLK

RST

I/O

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