MIC2560
PCMCIA Card Socket V
CC
and V
PP
Switching Matrix
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
General Description
The MIC2560 V
CC
and V
PP
Matrix controls PCMCIA (Per-
sonal Computer Memory Card International Association)
memory card power supply pins, both V
CC
and V
PP
. The
MIC2560 switches voltages from the system power supply
to V
CC
and V
PP
. The MIC2560 switches between the three
V
CC
voltages (OFF, 3.3V and 5.0V) and the V
PP
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 V
CC
and
200mA for V
PP
.
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.
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
Typical Application
