Features: • Complete PCMCIA VCC and VPP Switch Matrix in a Single IC
• No External Components Required
• Controlled Switching Times
• Logic Options for Compatible with Industry Standard PCMCIA Controllers
• No Voltage Overshoot or Switching Transients
• Break-Before-Make Switching
• Output Current Limit and Over-Temperature Shutdown
• Digital Flag for Error Condition Indication
• Ultra Low Power Consumption
• Digital Selection of VCC and VPP Voltages
• Over 750mA of VCC Output Current
• 200mA of VPP Output Current
• 14-Pin SOIC PackageApplication• PCMCIA Power Supply Pin Voltage Switch
• 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
• Power Analog SwitchingPinout
SpecificationsPower Dissipation, TAMBIENT £ 25°C ....................Internally Limited
SOIC .................................................................................... 800 mW
Derating Factors (To Ambient)
SOIC ................................................................................ 4 mW/°C
Storage Temperature ....................................... 65°C to +150°C
Maximum Operating Temperature (Die) ............................... 125°C
Operating Temperature (Ambient) .......................... 0°C to +70°C
Lead Temperature (5 sec).................................................... 260°C
Supply Voltage, VPP IN ............................................................. 15V
VCC3 IN ............................................................................. VCC5 IN
VCC5 IN ................................................................................... 7.5V
Logic Input Voltages.................................. ..............0.3V to +15V
Output Current (each Output)
VPP OUT ...............................................................Internally Limited
VCC OUT ............................................................. Internally Limited
VCC OUT, Suspend Mode .................................................... 600mADescriptionThe MIC2561 VCC & VPP Matrix controls PCMCIA (Personal Computer Memory Card International Association) memory card power supply pins, both VCC and VPP. The MIC2561 switches voltages from the system power supply to VCC and VPP. The MIC2561 switches between the three VCC voltages (OFF, 3.3V and 5.0V) and the VPP 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 750mA for VCC and 200mA for VPP. For higher VCC output current, please refer to the full-performance MIC2560.
The MIC2561 provides power management capability under the control of the PC Card controller and features overcurrent 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 MIC2561 is designed for efficient operation. In standby ("sleep") mode the device draws very little quiescent current, typically 0.01mA. The MIC2561 and PCMCIA port is protected by
current limiting and overtemperature shutdown. Full crossconduction lockout protects the system power supply.
MIC2561 Data Sheet
