MIC2562A Datasheet, PDF (1/9 Pages) Micrel Semiconductor – PCMCIA/CardBus Socket Power Controller

MIC2562A
Micrel
MIC2562A
PCMCIA/CardBus Socket Power Controller
General Description
The MIC2562A PCMCIA (Personal Computer Memory Card
International Association) and CardBus Power Controller
handles all PC Card slot power supply pins, both V_CC and V_PP.
The MIC2562A switches between the three V_CC voltages (0V,
3.3V and 5.0V) and the V_PP voltages (OFF, 0V, 3.3V, 5V, or
12.0V) required by PC Cards. The MIC2562A switches
voltages from the system power supply to V_CC and V_PP.
Output voltage is selected by two digital inputs each and
output current ranges up to 1A for V_CC and 250mA for V_PP.
The MIC2562A provides power management capability con-
trolled by the PC Card logic controller. Voltage rise and fall
times are well controlled. Medium current V_PP and high
current V_CC output switches are self-biasing: no +12V supply
is required for 3.3V or 5V output.
The MIC2562A is designed for efficient operation. In standby
(sleep) mode the device draws very little quiescent current,
typically 0.3µA. The device and PCMCIA port is protected by
current limiting and overtemperature shutdown. Full cross-
conduction lockout protects the system power supply.
The MIC2562A is an improved version of the MIC2562,
offering lower ON-resistance and a V_CC pull-down clamp in
the OFF mode. It is available in a 14-pin 0.150" SOIC.
Ordering Information
Part Number Temperature Range
Package
Applications
• PC Card Power Supply Pin Voltage Switch
• CardBus Slot Power Supply Control
• 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
• Analog Power Switching
Features
• High Efficiency, Low Resistance Switches Require No
12V Bias Supply
• No External Components Required
• Output Current Limit and Overtemperature Shutdown
• Open-Drain Flag for Error Condition Indication
• Ultra Low Power Consumption
• Complete PC Card/CardBus V_CC and V_PP Switch Matrix
in a Single Package
• Logic Compatible with Industry Standard PC Card Logic
Controllers
• No Voltage Shoot-Through or Switching Transients
• Break-Before-Make Switching
• Digital Selection of V_CC and V_PP Voltages
• Over 1A V_CC Output Current
•
•
Over 200mA
Small 14-Pin
VS_{POPICOPuatpcuktaCgeurrent}
MIC2562A-0BM
MIC2562A-1BM
–40°C to +85°C
–40°C to +85°C
14-pin Narrow SOIC
14-pin Narrow SOIC
Pin Configuration
Note: see the logic table inside for a description of the differences
between the logic options
Typical Application
5V
System
Power 3.3V
Supply
12V
(opt)
VPPIN VCC3IN VCC5IN
(opt)
EN0
EN1
MIC2562
VPP1
VPP2 PCMCIA
Card Slot
V_{CC5_EN}
14 GND
V_{CC3_EN}
2
13
V_CC5 IN
*
3
12
V_CC OUT
*
4
11
V_CC5 IN
FLAG
5
10
V_CC OUT
V_PP IN
6
9
V_CC3 IN
V_PP OUT
7
8
V_CC OUT
* see table below
14 Pin S.O. Package
Both V_CC5 IN pins must be connected.
All three V_CC OUT pins must be connected.
PCMCIA
Card Slot
Controller
VCC5_EN
VCC3_EN
VCC
MIC2562A Pin Assignments
Pin
-0
-1
3
EN0
V_{PP_VCC}
4
EN1
V_{PP_PGM}
MIC2562A
54
July 1999