Rainbow-electronics MAX1686H Manual do Utilizador descarregar pdf

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

General Description

The MAX1686 provides power for dual-voltage sub-

scriber ID module (SIM) cards in portable applications

such as GSM cellular phones. Designed to reside in the

portable unit (cellular phone handset), the 1MHz charge

pump converts a 2.7V to 4.2V input to regulated 5V out-

put. The MAX1686H has a nominal output voltage of

5.0V, while the MAX1686 is set to 4.75V to reduce SIM-

card current drain. The charge pump has only 45µA qui-

escent supply current, which reduces to 3µA when a

3V-capable SIM card is being powered and the charge

pump is disabled. An internal input/output shorting

switch provides power for 3V SIM cards.

The MAX1686/MAX1686H require only three external

capacitors around their space-saving, thin (1mm) 8-pin

µMAX packages.

Applications

GSM Cellular Phones

PCS Phones

Portable POS Terminals

Personal Communicators

Features

♦ 2.7V to 4.2V Input Range

♦ 12mA min Charge-Pump Output Current

♦ 45µA Quiescent Supply Current

♦ 0.1µA Supply Current in Shutdown Mode

♦ 5.0V Regulated Charge-Pump Output (MAX1686H)

4.75V Regulated Charge-Pump Output (MAX1686)

♦ Input-Output Shorting Switch for 3V Cards

♦ Small External Components

(Uses a 0.047µF, 0.1µF, and a 2.2µF Capacitor)

♦ Output Driven to Ground in Shutdown Mode

♦ Super-Small 8-Pin µMAX Package

♦ Soft-Start and Short-Circuit Protection

MAX1686/MAX1686H

3V to 5V Regulating

Charge Pumps for SIM Cards

________________________________________________________________

Maxim Integrated Products

OUT

CXP

CXN

PGNDGND

SHDN

3/5

MAX1686

MAX1686H

µMAX

TOP VIEW

MAX1686

MAX1686H

CXN CXP

GND PGND

INPUT

2.7V TO 4.2V

OUTPUT

OR 5V/20mA

OUT

SHDN

3/5

OUT

Typical Operating Circuit

19-1376; Rev 1; 12/98

PART

MAX1686EUA

-40°C to +85°C

TEMP. RANGE PIN-PACKAGE

8 µMAX

Pin Configuration

Ordering Information

MAX1686HEUA

-40°C to +85°C 8 µMAX

1 2 3 4 5 6 7 8

Resumo do Conteúdo

Página 1 - Charge Pumps for SIM Cards

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.For small orders, phone 1-800-835-8769.General Descript

Página 2

MAX1686/MAX1686H3V to 5V Regulating Charge Pumps for SIM Cards2 ______________________________________________________________________________________

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MAX1686/MAX1686H3V to 5V Regulating Charge Pumps for SIM Cards_______________________________________________________________________________________3

Página 4

MAX1686/MAX1686H3V to 5V Regulating Charge Pumps for SIM Cards4 ______________________________________________________________________________________

Página 5

MAX1686/MAX1686H3V to 5V Regulating Charge Pumps for SIM Cards_______________________________________________________________________________________

Página 6

MAX1686/MAX1686H3V to 5V Regulating Charge Pumps for SIM Cards6 ______________________________________________________________________________________

Página 7

MAX1686/MAX1686H3V to 5V Regulating Charge Pumps for SIM Cards_______________________________________________________________________________________

Página 8

MAX1686/MAX1686H3V to 5V Regulating Charge Pumps for SIM CardsMaxim cannot assume responsibility for use of any circuitry other than circuitry entirel

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Rainbow-electronics MAX1686H Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para Sensores Rainbow-electronics MAX1686H. Rainbow Electronics MAX1686H User Manual Manual do Utilizador

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