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LTC4555EUDPBF

更新时间： 2024-11-11 12:46:35

品牌	Logo	应用领域
凌特 - Linear		转换器电平转换器
页数	文件大小	规格书
8页	107K
描述
SIM Power Supply and Level Translator-13

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中文翻译

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数据手册

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LTC4555EUDPBF 数据手册

LTC4555

SIM Power Supply

and Level Translator

FEATURES

DESCRIPTION

The LTC^®4555 provides power conversion and signal

level shifting needed for low voltage 2.5G and 3G cellular

telephones to interface with 1.8V or 3V subscriber identity

modules (SIMs). The part meets all type approval require-

ments for 1.8V and 3V SIMs and smart cards. The part

contains an LDO linear regulator to supply SIM power at

either 1.8V or 3V from a 3V to 6V input. The output volt-

age is selected with a single pin and up to 50mA of load

current can be supplied.

SIM Power Supply: 1.8V/3V at 50mA

Input Voltage Range: 3V to 6V

Controller Voltage Range: 1.2V to 4.4V

14kV ESD On All SIM Contact Pins

Meets All ETSI, IMT-2000 and ISO7816 SIM/Smart

Card Interface Requirements

Level Translators to 1.8V or 3V

20μA Operating Current

Logic-Controlled Shutdown (I < 1μA)

Available in a Low Proﬁle, 16-Pin (3mm × 3mm)

Internal level translators allow controllers operating with

supplies as low as 1.2V to interface with 1.8V or 3V smart

cards. Battery life is maximized by 20μA operating current

and <1μA shutdown current. Board area is minimized by

the 3mm × 3mm leadless QFN package.

QFN Package

APPLICATIONS

SIM Interface in 3G Cellular Telephones

Smart Card Readers

L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

TYPICAL APPLICATION

Typical SIM Interface

BAT

(1.2V TO 4.4V) (3V TO 6V)

SIM/

SMART CARD

INTERFACE

0.1μF

BAT

SHDN

SEL

1μF

CONTROLLER

LTC4555

GND

RST

CLK

I/0

RST

CLK

I/0

DATA

GND

4555 TA01

4555fb

12 3 4 5 6 7 8

中文翻译

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