MICREL MIC2561-0BM, MIC2561-1BM Datasheet

MIC2561 Micrel

MIC2561

PCMCIA Card Socket VCC & VPP Switching Matrix

General Description

The MIC2561 VCC & VPP Matrix controls PCMCIA (Personal
Computer Memory Card International Association) memory
card power supply pins, both VCC and VPP. The MIC2561
switches voltages from the system power supply to VCC and
VPP. The MIC2561 switches between the three VCC voltages
(OFF, 3.3V and 5.0V) and the VPP 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 VCC and 200mA for VPP. For
higher VCC output current, please refer to the full-perfor­mance 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 cross­conduction lockout protects the system power supply.

Ordering Information

Part Number Temperature Range Package

MIC2561-0BM 0°C to +70°C 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 PCMCIA VCC and VPP Switch Matrix in a
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 VCC and VPP Voltages

• Over 750mA of VCC Output Current

• 200mA of VPP Output Current

• 14-Pin SOIC Package

MIC2561-1BM 0°C to +70°C 14-pin SOIC

T ypical Application

5V

System

Power

Supply

PCMCIA

Card Slot

Controller

3.3V

12V

V

VPPIN V

CC3

EN0

EN1

MIC2561

V

CC5_EN

V

CC3_EN

IN

IN

CC5

V

V

V

PP1

PP2

CC

PCMCIA

Card Slot

2-30 1997

MIC2561 Micrel

Absolute Maximum Ratings (Notes 1 and 2)

Power Dissipation, T

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

AMBIENT

≤ 25°C ....

Internally Limited

Supply Voltage, V

V

IN ....................................................... V

CC3

V

IN ............................................................. 7.5V

CC5

Logic Input Voltages.................................. –0.3V to +15V

Output Current (each Output)

V

PP OUT

V

CC OUT

V

CC OUT

..............................................

............................................

, Suspend Mode.............................. 600mA

...................................................

PP IN

Internally Limited

Internally Limited

CC5

15V

IN

Pin Configuration

Note: Both V

Logic Block Diagram

V

CC5_EN

V

CC3_EN

EN0
EN1

FLAG

VPP IN

VPP OUT

14-Pin SO Package

IN pins must be connected. All three V

CC3

EN1

14
13

2

12

3

11

4

10

5
6

7

9
8

GND

V

CC3

V

CC

V

CC3

V

CC

V

CC5

V

CC

CC

IN

OUT

IN

OUT

IN

OUT

OUT pins must be connected.

V

IN

PP

550mΩ

V

PP OUT

2

MIC2561

Control

EN0

V

CC5_EN

V

CC3_EN

V

IN

CC3

V

IN

CC5

Flag

1997 2-31

I

Limit

Logic

/ Thermal Shut Down

700mΩ

V

CC OUT

210mΩ

2Ω

110mΩ

GND

MIC2561 Micrel

Electrical Characteristics:

(Over operating temperature range with V

CC3

IN = 3.3V, V

IN = 5.0V, VPP IN = 12V unless

CC5

otherwise specified.)

Symbol Parameter Conditions Min Typ Max Units

INPUT

V

IH

V

IL

I

IN

Logic 1 Input Voltage 2.2 15 V
Logic 0 Input Voltage –0.3 0.8 V
Input Current 0 V < VIN < 5.5V ±1 µA

VPP OUTPUT

I

PP OUT

Hi-Z Leakage Current 0 ≤ V

I

PPSC

R

O

High Impedance Output Shutdown Mode 0.1 50 µA

PP OUT

Short Circuit Current Limit V

PP OUT

Switch Resistance, Select V
I

PP OUT

= –1000mA (Sourcing) Select V

Select V

≤ 12V

= 0 0.2 A

PP OUT
PP OUT
PP OUT

= 12V 0.55 1 Ω

= 5V 0.7 1

= 3.3V 2 3

R

O

Switch Resistance, Select V

I

PP OUT

= 50µA (Sinking)

VPP SWITCHING TIME (See Figure 1)

t

1

t

2

t

3

t

4

t

5

t

6

Output Turn-On Rise Time V

Output Turn-On Rise Time V

Output Turn-On Rise Time V

Output Rise Time V

Output Turn-Off Delay V

Output Turn-Off Delay V

VCC OUTPUT

I

CC OUT

High Impedance Output 1 ≤ V

Hi-Z Leakage Current

PP OUT

PP OUT

PP OUT

PP OUT

PP OUT

PP OUT

PP OUT

CC OUT

= Clamped to Ground 0.75 2 kΩ

= Hi-Z to 5V 50 µs

= Hi-Z to 3.3V 40 µs

= Hi-Z to 12V 300 µs

= 3.3V or 5V to 12V 30 µs

= 12V to 3.3V or 5V 25 75 µs

= 5V to Hi-Z 75 200 ns

≤ 5V 0.1 10 µA

I

CCSC

R

O

R

O

Short Circuit Current Limit V

Switch Resistance, I
V

CC OUT

= 5.0V

Switch Resistance, I
V

CC OUT

= 3.3V

CC OUT

CC OUT

CC OUT

= 0 1.5 2 A

= –650 mA (Sourcing) 210 300 mΩ

= –650 mA (Sourcing) 110 185 mΩ

2-32 1997