MIC2563A Datasheet, PDF (1/10 Pages) Micrel Semiconductor – Dual Slot PCMCIA/CardBus Power Controller Preliminary Information

MIC2563A
Micrel
MIC2563A
Dual Slot PCMCIA/CardBus Power Controller
Preliminary Information
General Description
Applications
The MIC2563A Dual Slot PCMCIA (Personal Computer • Dual Slot PC Card Power Supply Pin Voltage Switch
Memory Card International Association) and CardBus Power • CardBus Slot Power Supply Control
Controller handles all PC Card slot power supply pins, both • Data Collection Systems
V_CC and V_PP. The MIC2563A switches between the three V_CC
voltages (0V, 3.3V and 5.0V) and the V_PP voltages (OFF, 0V,
3.3V, 5V, or 12.0V) required by PC Cards. The MIC2563A
• Machine Control Data Input Systems
• Wireless Communications
• Bar Code Data Collection Systems
switches voltages from the system power supply to V_CC and • Instrumentation Configuration/Datalogging
V_PP. Output voltage is selected by two digital inputs each and • Docking Stations (portable and desktop)
output current ranges up to 1A for V_CC and 250mA for V_PP. • Power Supply Management
• Power Analog Switching
The MIC2563A provides power management capability con-
trolled by the PC Card logic controller. Voltage rise and fall
2
times are well controlled. Medium current V_PP and high
current V_CC output switches are self-biasing: no +12V supply
is required for 3.3V or 5V output.
Features
• Single Package Controls Two PC Card Slots
• High Efficiency, Low Resistance Switches Require No
The MIC2563A is designed for efficient operation. In standby
(sleep) mode the device draws very little quiescent current,
typically 0.3µA. The device and PCMCIA port is protected by
current limiting and overtemperature shutdown. Full cross-
conduction lockout protects the system power supplies.
12V Bias Supply
• No External Components Required
• Output Current Limit and Overtemperature Shutdown
• Ultra Low Power Consumption
• Complete Dual Slot PC Card/CardBus V_CC and V_PP
Switch Matrix in a Single Package
The MIC2563A is an improved version of the MIC2563,
offering lower ON-resistances and a V_CC pulldown clamp in
the OFF mode. It is available in a 28-pin SSOP.
• Logic Compatible with Industry Standard PC Card Logic
Controllers
• No Voltage Shoot-Through or Switching Transients
• Break-Before-Make Switching
• Digital Selection of V_CC and V_PP Voltages
• Over 1A V_CC Output Current for Each Section
• Over 250mA V_PP Output Current for Each Section
• 28-Pin SSOP Package
Ordering Information
Part Number Temperature Range
MIC2563A-0BSM –40°C to +85°C
MIC2563A-1BSM –40°C to +85°C
Package
28-pin SSOP
28-pin SSOP
Note: see the logic table inside for a description of the differences
between the logic options
Typical Application
System
Power
Supply
5V
(opt)
3.3V
12V
(opt)
PCMCIA
Card Slot
Controller
VPPIN VCC3IN VCC5IN
(opt)
EN0
EN1
VCC5_EN
VCC3_EN
MIC2563
EN0
EN1
VCC5_EN
VCC3_EN
VPP1
VPP2
PCMCIA
Card Slot
A
VCC
VPP1
VPP2 _PPCCMMCCIIAA
CCaarrdd SSlloott
VCC
B
1997
2-47