Datasheet > LTC4555

LTC4555

更新时间： 2024-11-12 14:57:55

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
8页	157K
描述
SIM 电源和电平变换器

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中文翻译

获取价格

数据手册

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LTC4555 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, LTM, Linear Technology and the Linear logo are registered trademarks and

ThinSOT is a trademark 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

1µF

CONTROLLER

SEL

LTC4555

GND

RST

CLK

I/0

RST

CLK

I/0

DATA

GND

4555 TA01

4555fc

For more information www.linear.com/LTC4555

12 3 4 5 6 7 8

中文翻译

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