MIC2561
Micrel
MIC2561
PCMCIA Card Socket V
CC
and V
PP
Switching Matrix
Final Information
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.
Applications
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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
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Complete PCMCIA V
and V
Switch Matrix in a
CC
PP
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 V
CC
and V
PP
Voltages
Over 750mA of V
CC
Output Current
200mA of V
PP
Output Current
14-Pin SOIC Package
Ordering Information
Part Number
Standard
MIC2561-0BM
MIC2561-1BM
Pb-free
MIC2561-0YM
MIC2561-1YM
Temp. Range
0°C to +70°C
0°C to +70°C
Package
14-pin SOIC
14-pin SOIC
5V
System
Power 3.3V
Supply
12V
VPPIN VCC3IN VCC5IN
VPP1
VPP2
PCMCIA
Card Slot
EN0
EN1
MIC2561
VCC
VCC5_EN
VCC3_EN
PCMCIA
Card Slot
Controller
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
January 2005
1
MIC2561
MIC2561
Micrel
(Notes 1 and 2)
Supply Voltage, V
PP IN ...................................................
15V
V
CC3
IN ....................................................... V
CC5
IN
V
CC5
IN ............................................................. 7.5V
Logic Input Voltages .................................. –0.3V to +15V
Output Current (each Output)
V
PP OUT ..............................................
Internally Limited
V
CC OUT ............................................
Internally Limited
V
CC OUT
, Suspend Mode .............................. 600mA
Absolute Maximum Ratings
Power Dissipation, T
AMBIENT
≤
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
Pin Configuration
VCC5_EN
VCC3_EN
EN0
EN1
FLAG
VPP IN
VPP OUT
14
2
3
4
5
6
7
13
12
11
10
9
8
GND
VCC3 IN
VCC OUT
VCC3 IN
VCC OUT
VCC5 IN
VCC OUT
14-Pin SO Package
Note: Both V
CC3
IN pins must be connected. All three V
CC
OUT pins must be connected.
Logic Block Diagram
VPP IN
550mΩ
EN1
VPP OUT
EN0
MIC2561
Control
Logic
700mΩ
VCC OUT
VCC5_EN
210mΩ
2Ω
VCC3_EN
VCC3 IN
VCC5 IN
Flag
ILimit / Thermal Shut Down
110mΩ
GND
MIC2561
2
January 2005
MIC2561
Micrel
Electrical Characteristics (continued)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
CC
SWITCHING TIME
t
1
t
2
t
3
t
4
Rise Time (10% to 90%)
Rise Time (10% to 90%)
Fall Time (note 3)
Rise Time
V
CC OUT
= 0V to 3.3V, I
OUT
= 750mA
V
CC OUT
= 0V to 5.0V
V
CC OUT
= 5.0V to 0V or 3.3V to 0V
V
CC OUT
= Hi-Z to 5V
70
50
140
60
40
60
µs
µs
µs
µs
POWER SUPPLY
I
CC5
V
CC5
IN Supply Current
I
CC OUT
= 0
0.01
10
µA
I
CC3
V
CC3
IN Supply Current
V
CC OUT
= 5V or 3.3V, I
CC OUT
= 0
V
CC OUT
= Hi-Z (Sleep Mode)
30
0.01
15
0.01
100
10
30
10
µA
I
PP
IN
V
PP
IN Supply Current
I
PP OUT
=0
V
CC
Active, V
PP OUT
= 5V or 3.3V
V
PP OUT
= HiZ, 0, or V
PP
µA
V
CC5
IN
V
CC3
IN
V
PP IN
Operating Input Voltage
Operating Input Voltage
Operating Input Voltage
V
CC5
IN
≥
V
CC3
IN
V
CC3
IN
≤
V
CC5
IN
V
CC3
IN
2.8
8.0
5.0
3.3
12.0
6
V
CC5
IN
14.5
V
V
V
SUSPEND MODE (NOTE 6)
I
CC3
Suspend Mode Active Current
(from V
CC3
)
V
PP IN
= 0V, V
CC5
= V
CC3
= 3.3V
V
CC5
= Enabled
V
PP
= Disabled (Hi-Z or 0V)
V
PP IN
= 0V, V
CC5
= V
CC3
= 3.3V
V
CC3
= Enabled
V
PP
= Disabled (Hi-Z or 0V)
30
100
µA
R
ON
V
CC
V
CC OUT
R
ON
4.5
6
Ω
NOTE 1:
NOTE 2:
NOTE 3:
NOTE 6:
Functional operation above the absolute maximum stress ratings is not implied.
Static-sensitive device. Store only in conductive containers. Handling personnel and equipment should be grounded to prevent damage
from static discharge.
From 90% of V
OUT
to 10% of V
OUT
. R
L
= 2.1kΩ
Suspend mode is a pseudo power-down mode the MIC2561 automatically allows when V
PP IN
= 0V, V
PP
OUT is deselected, and V
CC
OUT = 3.3V is selected. Under these conditions, the MIC2561 functions in a reduced capacity mode where V
CC
output of 3.3V is allowed,
but at lower current levels (higher switch ON resistance).
MIC2561
4
January 2005
MCU
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