MIC2560
Micrel
MIC2560
PCMCIA Card Socket V
CC
and V
PP
Switching Matrix
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.
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
Ordering Information
Part Number
MIC2560-0BWM
MIC2560-1BWM
Junction Temp. Range*
–40°C to +70°C
–40°C to +70°C
Package
16-lead Wide SOP
16-lead Wide SOP
Refer to “Control Logic Table” for -0/-1 version explanation.
Typical Application
System Power Supply
12V
3.3V
5V
Address and data lines
between logic controller and
PCMCIA cards not shown.
V
PP
IN
EN0
PCMCIA
Card Slot
Controller
EN1
V
CC5
EN
V
CC3
EN
GND
V
CC3
IN
MIC2560
Power
Controller
V
CC5
IN
V
PP
1
V
PP
OUT
V
CC
OUT
V
CC
V
PP
2
PCMCIA
Card
Motherboard
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
November 1999
1
MIC2560
MICREL [ MICREL SEMICONDUCTOR ]
