MIC2560 Datasheet, PDF (1/12 Pages) Micrel Semiconductor – PCMCIA Card Socket VCC and VPP Switching Matrix

MIC2560
Micrel
MIC2560
PCMCIA Card Socket V and V Switching Matrix
CC
PP
General Description
The MIC2560 V_CC and V_PP Matrix controls PCMCIA (Per-
sonal Computer Memory Card International Association)
memory card power supply pins, both V_CC and V_PP. The
MIC2560 switches voltages from the system power supply to
V_CC and V_PP. The MIC2560 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 1A for V_CC and 200mA for V_PP.
The MIC2560 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 MIC2560 is designed for efficient operation. In standby
(sleep) mode the device draws very little quiescent current,
typically 0.01µA. The device and PCMCIA ports are pro-
tected by current limiting and overtemperature shutdown.
Full cross-conduction lockout protects the system power
supply.
Ordering Information
Part Number Junction Temp. Range*
Package
MIC2560-0BWM
–40°C to +70°C
16-lead Wide SOP
MIC2560-1BWM
–40°C to +70°C
16-lead Wide SOP
Refer to “Control Logic Table” for -0/-1 version explanation.
Applications
• PCMCIA power supply pin voltage switch
• Font cards for printers and scanners
• 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 sanagement
• Power analog switching
Features
• Complete PCMCIA V_CC and V_PP switch matrix
in a single IC
• No external components required
• Logic compatible with industry standard
PCMCIA controllers
• No voltage overshoot or switching transients
• Break-before-make switching
• Output current limit and overtemperature shutdown
• Digital flag for error condition indication
• Ultralow power consumption
• Digital selection of V_CC and V_PP voltages
• Over 1A V_CC output current
• 200mA V_PP (12V) output current
• Options for direct compatibility with
industry standard PCMCIA controllers
• 16-Pin SO package
Typical Application
Address and data lines
between logic controller and
PCMCIA cards not shown.
PCMCIA
Card Slot
Controller
System Power Supply
12V
3.3V
5V
V_PP IN
V_CC3 IN
V_CC5 IN
EN0
EN1
V_CC5 EN
V_CC3 EN
MIC2560
Power
Controller
V_PP OUT
V_CC OUT
GND
V_PP1
V_PP2
V_CC
Motherboard
PCMCIA
Card
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 [phone] • fax + 1 [phone] • http://www.micrel.com
November 1999
1
MIC2560