LT1312CS8 datasheet(1/12 Pages) LINER

部品番号	LT1312CS8

部品情報	Single PCMCIA VPP Driver/Regulator

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メーカー	LINER [Linear Technology]

ホームページ	http://www.linear.com

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LT1312

FEATURES

DESCRIPTION

Single PCMCIA

VPP Driver/Regulator

s

Digital Selection of 0V, VCC, 12V or Hi-Z

s

120mA Output Current Capability

s

Internal Current Limiting and Thermal Shutdown

s

Automatic Switching from 3.3V to 5V

s

Powered from Unregulated 13V to 20V Supply

s

Logic Compatible with Standard PCMCIA Controllers

s

1

µF Output Capacitor

s

30

µA Quiescent Current in Hi-Z or 0V Mode

s

VPP Valid Status Feedback Signal

s

No VPP Overshoot

s

8-Pin SO Packaging

The LT

® 1312 is a member of Linear Technology

Corporation’s family of PCMCIA drivers/regulators. The

LT1312 provides 0V, 3.3V, 5V, 12V and Hi-Z regulated

power to the VPP pin of a PCMCIA card slot from a single

unregulated 13V to 20V supply. When used in conjunction

with a PC card interface controller, the LT1312 forms a

complete minimum component-count interface for palm-

top, pen-based and notebook computers. The VPP output

voltage is selected by two logic compatible digital inputs

which interface directly with industry standard PC card

interface controllers.

Automatic 3.3V to 5V switching is provided by an internal

comparator which continuously monitors the PC card VCC

supply and automatically adjusts the regulated VPP out-

put to match VCC when the VPP = VCC mode is selected.

An open-collector VPP VALID output is driven low when

VPP is in regulation at 12V.

The LT1312 is available in an 8-pin SO package.

APPLICATIONS

s

Notebook Computers

s

Palmtop Computers

s

Pen-Based Computers

s

Handi-Terminals

s

Bar-Code Readers

s

Flash Memory Programming

VS

13V TO 20V

3.3V OR 5V

EN0

COUT

1

µF

TANTALUM

VPPOUT

VPP1

VPP2

PCMCIA

CARD SLOT

VCC

LT1312

EN1

VALID

SENSE

GND

LT1312 TA1

PCMCIA

CARD SLOT

CONTROLLER

+

TYPICAL APPLICATION

Typical PCMCIA Single Slot VPP Driver

LT1312 TRUTH TABLE

EN0

EN1

SENSE

VPPOUT

VALID

00

X

0V

1

0

X

12V

0

1

3.0V TO 3.6V

3.3V

1

0

1

4.5V TO 5.5V

5V

1

X

Hi-Z

1

X = DON’T CARE

Linear Technology PCMCIA Product Family

DEVICE

DESCRIPTION

PACKAGE

LT1312

SINGLE PCMCIA VPP DRIVER/REGULATOR

8-PIN SO

LT1313

DUAL PCMCIA VPP DRIVER/REGULATOR

16-PIN SO*

LTC

®1314 SINGLE PCMCIA SWITCH MATRIX

14-PIN SO

LTC1315

DUAL PCMCIA SWITCH MATRIX

24-PIN SSOP

LTC1470

PROTECTED VCC 5V/3.3V SWITCH MATRIX

8-PIN SO

LTC1472

PROTECTED VCC AND VPP SWITCH MATRIX 16-PIN SO*

*NARROW BODY

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

同様の部品番号 - LT1312CS8

メーカー	部品番号	データシート	部品情報
Linear Technology	LT1312	240Kb / 12P	Single PCMCIA VPP Driver/Regulator
Linear Technology	LT1312	240Kb / 12P	Single PCMCIA VPP Driver/Regulator

More results

同様の説明 - LT1312CS8

メーカー	部品番号	データシート	部品情報
Linear Technology	LT1313	252Kb / 12P	Dual PCMCIA VPP Driver/Regulator
Linear Technology	LTC1472	300Kb / 16P	Protected PCMCIA VCC and VPP Switching Matrix
Maxim Integrated Produc...	MAX1602	130Kb / 12P	Single-Channel CardBus and PCMCIA VCC/VPP Power-Switching Network 19-1125; Rev 0; 9/96
Micrel Semiconductor	MIC2557	51Kb / 6P	PCMCIA Card Socket VPP Switching Matrix
	MIC2558	61Kb / 6P	PCMCIA Dual Card Socket VPP Switching Matrix
	MIC2561	50Kb / 8P	PCMCIA Card Socket VCC & VPP Switching Matrix
Linear Technology	LTC1472	199Kb / 16P	Protected PCMCIA VCC and VPP Switching Matrix
	LT1313	229Kb / 12P	Dual PCMCIA VPP Driver/Regulator
	LT1312	240Kb / 12P	Single PCMCIA VPP Driver/Regulator
	LTC1472	205Kb / 16P	Protected PCMCIA VCC and VPP Switching Matrix