MIC2560 データシートの表示（PDF） - Micrel

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MIC2560

PCMCIA Card Socket VCC and VPP Switching Matrix

Micrel 

MIC2560

PCMCIA Card Socket VCC and VPP

Switching Matrix

General Description

The MIC2560 VCC and VPP Matrix controls PCMCIA (Per-

sonal Computer Memory Card International Association)

memory card power supply pins, both VCC and VPP. The

MIC2560 switches voltages from the system power supply

to VCC and VPP. The MIC2560 switches between the three

VCC voltages (OFF, 3.3V and 5.0V) and the VPP voltages

(OFF, 0V, 3.3V, 5V, or 12.0V) required by PCMCIA cards.

Output voltage is selected by two digital inputs for each

output and output current ranges up to 1A for VCC and

200mA for VPP.

The MIC2560 provides power management capability

under the control of the PC Card controller and features

over current and thermal protection of the power outputs,

zero current “sleep” mode, suspend mode, low power

dynamic mode, and on-off control of the PCMCIA socket

power.

The MIC2560 is designed for efficient operation. In stand-

by (sleep) mode the device draws very little quiescent

current, typically 0.01µA. The device and PCMCIA ports

are protected by current limiting and overtemperature

shutdown. Full cross-conduction lockout protects the

system power supply.

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

Typical Application

Features

• Complete PCMCIA VCC and VPP switch matrix in a

single IC

• No external components required

• Logic compatible with industry standard PCMCIA

controllers

• No voltage overshoot or switching transients

• Break-before-make switching

• Output current limit and overtemperature shutdown

• Digital flag for error condition indication

• Ultra-low power consumption

• Digital selection of VCC and VPP voltages

• Over 1A VCC output current

• 200mA VPP (12V) output current

• Options for direct compatibility with industry standard

PCMCIA controllers

• 16-Pin SOIC package

Applications

• PCMCIA power supply pin voltage switch

• Font cards for printers and scanners

• Data-collection systems

• Machine control data input systems

• Wireless communications

• Bar code data collection systems

• Instrumentation configuration/data-logging

• Docking stations (portable and desktop)

• Power supply management

• Power analog switching

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

September 2006

1

M9999-092106

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