MIC2566 Datasheet, PDF (1/10 Pages) Micrel Semiconductor – Single-Slot PC Card/CardBus Power Controller

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
• 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
Applications
• 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
Typical Application
System ^5V
Power
Supply _3.3V
PCMCIA
Card Slot
Controller
VCC3IN
EN0
VCC5 IN
(optional)
EN1
MIC2566
VCC5_EN
VCC3_EN
VPP1
VPP2 _PCMCIA
Card Slot
VCC
UL Recognized Component
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 [phone] • fax + 1 [phone] • http://www.micrel.com
May 2003
1
MIC2566