MIC2561 Datasheet, PDF (1/8 Pages) Micrel Semiconductor – PCMCIA Card Socket VCC & VPP Switching Matrix

MIC2561
Micrel
MIC2561
PCMCIA Card Socket V_CC & V_PP Switching Matrix
General Description
The MIC2561 V_CC & V_PP Matrix controls PCMCIA (Personal
Computer Memory Card International Association) memory
card power supply pins, both V_CC and V_PP. The MIC2561
switches voltages from the system power supply to V_CC and
V_PP. The MIC2561 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 750mA for V_CC and 200mA for V_PP. For
higher V_CC output current, please refer to the full-perfor-
mance 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 0.01µA. The device and PCMCIA port is protected by
current limiting and overtemperature shutdown. Full cross-
conduction lockout protects the system power supply.
Ordering Information
Part Number Temperature Range
MIC2561-0BM
0°C to +70°C
MIC2561-1BM
0°C to +70°C
Package
14-pin SOIC
14-pin SOIC
Applications
• 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 Switching
Features
•
Complete
Single IC
PCMCIA
V_CC
and
V_PP
Switch
Matrix
in
a
• 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 V_CC and V_PP Voltages
•
•
O20v0emr 7A5o0fmVA_PPofOVu_{CtpCuOt Cutupruret nCturrent}
• 14-Pin SOIC Package
Typical Application
5V
System
Power 3.3V
Supply
12V
PCMCIA
Card Slot
Controller
VPPIN VCC3IN VCC5IN
EN0
EN1
MIC2561
VCC5_EN
VCC3_EN
VPP1
VPP2 PCMCIA
Card Slot
VCC
2-30
1997