June 2004

1

M9999-062204

MIC2562A

Micrel

MIC2562A

PCMCIA/CardBus Socket Power Controller

General Description

The MIC2562A PCMCIA (Personal Computer Memory Card

International Association) and CardBus power controller

handles all PC Card slot power supply pins, both V

V

ages (0V, 3.3V and 5.0V) and the V

3.3V, 5V or 12.0V) required by PC Cards. The MIC2562A

switches voltages from the system power supply to V

V

output current ranges up to 1A for V

The MIC2562A provides power management capability con-

trolled by the PC Card logic controller. Voltage rise and fall

times are well controlled. Medium current V

current V

ply is required for 3.3V or 5V output.

The MIC2562A is designed for efficient operation. In standby

(sleep) mode, the device draws very little quiescent current,

typically 0.3

µA. The device and PCMCIA port is protected by

current limiting and overtemperature shutdown. Full cross-

conduction lockout protects the system power supply during

switching operations.

The MIC2562A is an improved version of the MIC2562,

offering lower on-resistance and a V

the OFF mode. It is available in a 14-pin (0.150") SOIC, and

the -1 logic option is also available in 16-pin TSSOP

All support documentation can be found on Micrel’s web

site at www.micrel.com.

Features

• High-efficiency, low-resistance switches require no

12V bias supply

• No external components required

• Output current limit and overtemperature shutdown

• Open-drain flag for error condition indication

• Ultra-low power consumption

• Complete PC Card/CardBus V

in a single package

• Logic compatible with industry standard PC Card logic

controllers

• No voltage shoot-through or switching transients

• Break-before-make switching

• Digital selection of V

• Over 1A V

• Over 200mA V

• Pb-free SOIC packages

• UL recognized, file #179633

Applications

• PC Card power supply pin voltage switch

• CardBus slot power supply control

• Data collection systems

• Machine control data input systems

• Wireless communications

• Bar code data collection systems

• Instrumentation configuration/datalogging

• Docking stations (portable and desktop)

• Power supply management

• Analog power switching

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com

Typical Application

System

Power

Supply

PCMCIA

Card Slot

Controller

MIC2562

PCMCIA

Card Slot

5V

3.3V

12V

(opt)

EN0

EN1

VPP1

VCC

VPP IN

(opt)

VCC5 IN

VCC3 IN

VCC5_EN

VCC3_EN

VPP2

UL Recognized Component