MIC2566
Micrel
MIC2566
Single-Slot PC Card/CardBus Power Controller
Preliminary
General Description
The MIC2566 single-slot PC Card / CardBus power controller
is a V
CC
and V
PP
power switch matrix that supports 3.3V and
5V PC Card (PCMCIA) slot power supply pins.
The MIC2566 can switch PC Card slot V
CC
voltages between
0V (ground), 3.3V and 5.0V and V
PP
voltages between 0V
(ground), 3.3V, 5V, or high impedance at output currents of
up to 1A for V
CC
and 200mA for V
PP
. The MIC2566 features
well-controlled voltage rise and fall times. Each MIC2566
output voltage is switched by two digital inputs, typically
controlled from a separate PC Card logic controller.
The MIC2566 is designed for efficient operation. In standby
(sleep) mode the device draws very little quiescent current,
typically only 0.3µA. The power controller includes thermal
shutdown and protects itself and its PC Card ports with
current limiting. Full cross-conduction lockout protects the
system power supplies.
The MIC2566 is available in 14-pin SOP and TSSOP
packages.
Features
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Complete single-slot power switch solution
No external components required
Output current limit and thermal shutdown
Ultra-low power consumption
Compatible with standard PC Card logic controllers
Break-before-make switching (no transients)
Digital V
CC
and V
PP
voltage selection
> 1A V
CC
output current per slot
> 120mA V
PP
output current per slot
14-pin SOP and TSSOP package
Pb-free SO package
UL recognized, file #179633
Single-slot PC Card power supply 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
Portable and desktop computer docking stations
Power supply management
Power analog switching
Applications
Typical Application
5V
System
Power
Supply 3.3V
VCC3IN
VCC5 IN
(optional)
VPP1
VPP2
EN0
EN1
MIC2566
VCC
PCMCIA
Card Slot
Controller
VCC5_EN
VCC3_EN
PCMCIA
Card Slot
UL Recognized Component
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
May 2003
1
MIC2566
MIC [ MIC GROUP RECTIFIERS ]
