Datasheet > TXS4558

TXS4558

更新时间： 2024-12-01 12:16:51

品牌	Logo	应用领域
德州仪器 - TI		转换器电平转换器
页数	文件大小	规格书
18页	755K
描述
Dual-SIM Card Power Supply with Level Translator and Dedicated Dual LDO

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TXS4558 数据手册

TXS4558

www.ti.com

SLLSE93A –SEPTEMBER 2011–REVISED SEPTEMBER 2011

Dual-SIM Card Power Supply with Level Translator and Dedicated Dual LDO

Check for Samples: TXS4558

FEATURES

RUK PACKAGE

(TOP VIEW)

•

Level Translator

–

V_CCRange of 1.65 V to 3.3 V

V_BATTRange of 2.3V to 5.5V

•

Low-Dropout (LDO) Regulator

–

50-mA LDO Regulator With Enable

1.8-V or 2.95-V Selectable Output Voltage

Very Low Dropout: 100 mV (Max) at 50 mA

•

Control and Communication Through GPIO

Interface with Baseband Processor

VSIM2

CLKRUN2

CLKRUN1

CSEL

V_CC

Isolated Clock Stop Mode for both SIM1 and

SIM2 cards

GND

V_BATT

ESD Protection Exceeds JESD 22

VSEL1

VSIM1

–

2000-V Human-Body Model (A114-B)

500-V Charged-Device Model (C101)

8kV HBM for SIM pins

En1

SIM1_CLK

•

Package

20-Pin QFN (3 mm x 3 mm)

–

NOTE: Exposed center thermal pad must be

electrically connected to Ground.

DESCRIPTION

The TXS4558 is a complete dual-supply standby Smart Identity Module (SIM) card solution for interfacing wire-

less baseband processors with two individual SIM subscriber cards to store data for mobile handset applications.

It is a custom device which is used to extend a single SIM/UICC interface to be able to support two

SIM’s/UICC’s.

The device complies with ISO/IEC Smart-Card Interface requirements as well as GSM and 3G mobile standards.

It includes a high-speed level translator capable of supporting Class-B (2.95 V) and Class-C (1.8 V) interfaces,

two low-dropout (LDO) voltage regulators that have output voltages that are selectable between 2.95-V Class-B

and 1.8-V Class-C interfaces. Simple GPIO inputs are used to switch between the two SIM cards and to put it

into different modes. The voltage-level translator has two supply voltage pins. VCC sets the reference for the

baseband interface and can be operated from 1.65 V to 3.3 V. VSIM1 and VSIM2 are programmed to either

1.8 V or 2.95 V, each supplied by an independent internal LDO regulator. The integrated LDO accepts input

battery voltages from 2.3 V to 5.5 V and outputs up to 50 mA to the B-side circuitry and external Class-B or

Class-C SIM card.

The TXS4558 also incorporates shutdown sequence for the SIM card pins based on the ISO 7816-3 specification

for SIM cards. The device also has 8kV HBM protection for the SIM card pins and standard 2kV HBM protection

for all the other pins.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...18

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与TXS4558相关器件

型号	品牌	获取价格	描述	数据表
TXS4558RUKR	TI	获取价格	Dual-SIM Card Power Supply with Level Translator and Dedicated Dual LDO
TXS75ZA	POWER-ONE	获取价格	Input voltage range 36ˇ75V DC Single 80ˇ100A
TXS75ZA	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, 112W, Hybrid, 2.400 X 3.450 INCH, 0.500 INC
TXS75ZA-1V	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, 112W, Hybrid, 2.400 X 3.450 INCH, 0.500 INC
TXS75ZA-3H	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, 112W, Hybrid, 2.400 X 3.450 INCH, 0.500 INC
TXS75ZA-3V	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, 112W, Hybrid, 2.400 X 3.450 INCH, 0.500 INC
TXS75ZA-N	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, 112W, Hybrid, 2.400 X 3.450 INCH, 0.500 INC
TXS75ZA-N1H	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, 112W, Hybrid, 2.400 X 3.450 INCH, 0.500 INC
TXS75ZA-N1V	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, 112W, Hybrid, 2.400 X 3.450 INCH, 0.500 INC
TXS75ZA-N2H	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, 112W, Hybrid, 2.400 X 3.450 INCH, 0.500 INC

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