Datasheet MIC2562A-0BM, MIC2562A-1BM Datasheet (MICREL)

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 VCC and VPP.
The MIC2562A switches between the three VCC voltages (0V,

3.3V and 5.0V) and the VPP voltages (OFF, 0V, 3.3V, 5V, or

12.0V) required by PC Cards. The MIC2562A switches
voltages from the system power supply to VCC and VPP.
Output voltage is selected by two digital inputs each and
output current ranges up to 1A for VCC and 250mA for VPP.

The MIC2562A provides power management capability con­trolled by the PC Card logic controller. Voltage rise and fall
times are well controlled. Medium current VPP and high
current VCC 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 cross­conduction lockout protects the system power supply.

The MIC2562A is an improved version of the MIC2562,
offering lower ON-resistance and a VCC pull-down clamp in
the OFF mode. It is available in a 14-pin 0.150" SOIC.

Ordering Information

Part Number Temperature Range Package

MIC2562A-0BM –40°C to +85°C 14-pin Narrow SOIC
MIC2562A-1BM –40°C to +85°C 14-pin Narrow SOIC

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 VCC and VPP 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 VCC and VPP Voltages

• Over 1A VCC Output Current

• Over 200mA VPP Output Current

• Small 14-Pin SOIC Package

Pin Configuration

Note: see the logic table inside for a description of the differences

between the logic options

T ypical Application

5V

System

3.3V

Power
Supply

12V

PCMCIA

Card Slot

Controller

(opt)

VPPIN

(opt)

EN0

EN1

V

CC5_EN

V

CC3_EN

V

IN

CC3

MIC2562

V

IN

CC5

V

CC5_EN

V

CC3_EN

*
*

FLAG

VPP IN

OUT

V

PP

* see table below

V

PP1

V

PCMCIA

PP2

Card Slot

All three VCC OUT pins must be connected.

V

CC

14 Pin S.O. Package

Both V

30NEV
41NEV

IN pins must be connected.

CC5

niP0-1-

14
13

2

12

3

11

4

10

5
6
7

GND

IN

V

CC5

V

OUT

CC

IN

V

CC5

OUT

V

CC

9

V

IN

8

CC3

V

OUT

CC

stnemngissAniPA2652CIM

CCV_PP
MGP_PP

MIC2562A 54 July 1999

MIC2562A 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

Operating Temperature (Die) ................................... 125°C

Lead Temperature (5 sec)........................................ 260°C

AMBIENT

≤ 25°C ......

Internally Limited

Supply Voltage, V

V

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

CC3

V

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

CC5

FLAG Pull-up Voltage ................................................. 7.5V

Logic Input Voltages.....................................–0.3V to +10V

Output Current (each Output)

V

PP OUT

V

CC OUT

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

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

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

PP IN

>200mA, Internally Limited

>1A, Internally Limited

15V

Logic Block Diagram

V

IN

PP

(optional)

EN1

EN0

V

CC5_EN

V

CC3_EN

FLAG

V

CC3

IN

MIC2562

Control

Logic

V

PP OUT

V

CC OUT

V

July 1999 55 MIC2562A

CC5

IN

I

/ Thermal

Limit

Shut Down

Gate Drive

Generator

MIC2562A 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
DIGITAL INPUTS

V

IH

V

IL

I

IN

Logic 1 Input Voltage 2.2 7.5 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 1 10 µA

PP OUT

Short Circuit Current Limit V

PP OUT

Switch Resistance, Select V

Select V
I

PP OUT

≤ 12V

= 0 0.2 0.4 A

= 5V 1.8 2.5 Ω

PP OUT
PP OUT

= –100mA (Sourcing)

= 3.3V 3.3 5

R

O

R

O

Switch Resistance, V
Select V

PP OUT

= 12V I

Switch Resistance, Select V
Select V

PP OUT

= 0V I

VPP SWITCHING TIME (See Figure 1)

t

1

t

2

t

3

t

4

t

5

t

6

t

7

t

8

t

9

t

10

t

14

t

15

t

16

Output Turn-ON Delay V
(Note 3) V

Output Rise Time V
(Note 3) V

Output Transition Timing V
(Note 3) V

Output Turn-Off Delay Time V
(Note 3) V

= 12V 0.6 1 Ω

PP IN

PP OUT

PP OUT

V

V

V
V

V

= –100 mA (Sourcing)

PP OUT

= 50µA (Sinking)

PP OUT
PP OUT
PP OUT

PP OUT
PP OUT
PP OUT

PP OUT
PP OUT
PP OUT
PP OUT

PP OUT
PP OUT
PP OUT

= Hi-Z to 10% of 3.3V 5 50 µs
= Hi-Z to 10% of 5V 10 50
= Hi-Z to 10% of 12V 70 250

= 10% to 90% of 3.3V 100 200 800 µs
= 10% to 90% of 5V 100 300 1000
= 10% to 90% of 12V 100 225 800

= 3.3V to 90% of 12V 100 250 1000 µs
= 5V to 90% of 12V 100 200 800
= 12V to 90% of 3.3V 100 200 800
= 12V to 90% of 5V 100 350 1200

= 3.3V to Hi-Z 200 1000 ns
= 5V to Hi-Z 200 1000
= 12V to Hi-Z 200 1000

= clamped to ground 2500 3900 Ω

t

11

t

12

t

13

Output Turn-OFF Fall Time V
(Note 3) V

PP OUT
PP OUT

V

PP OUT

= 90% to 10% of 3.3V 50 1000 ns
= 90% to 10% of 5V 50 1000
= 90% to 10% of 12V 300 2000

MIC2562A 56 July 1999

MIC2562A Micrel

Electrical Characteristics (continued)

Symbol Parameter Conditions Min Typ Max Units

VCC OUTPUT

I

CCSC

R

O

Short Circuit Current Limit V

Switch Resistance Select V

VCC SWITCHING TIME (See Figure 2)

t

1

t

2

t

3

t

4

t

7

t

8

Output Turn ON Delay Time V
(Note 4) V

Output Rise Time V
(Note 4)

Output Turn-Off Delay V
(Notes 4, 5)

CC OUT

I

CC OUT

Select V
I

CC OUT

Select V
I

CC OUT

CC OUT

CC OUT

CC OUT

V

CC OUT

CC OUT

V

CC OUT

= 0 1 1.5 A

CC OUT

= –1A (Sourcing)

CC OUT

= –1A (Sourcing)

CC OUT

= 0.1mA (Sinking)

= 3.3V 100 150 mΩ

= 5V 70 100 mΩ

= clamped to ground 500 3900 Ω

= 0V to 10% of 3.3V 300 1500 µs
= 0V to 10% of 5.0V 750 3000

= 10% to 90% of 3.3V 200 700 2500 µs
= 10% to 90% of 5V 200 1500 6000

= 3.3V 2.4 8 ms
= 5V 2.8 8

t

5

Output Fall Time V
(Note 4)

t

6

POWER SUPPLY

I

CC5

I

CC3

V

CC5 IN

V

CC3 IN

(Note 6) V

I

IN V

PP

PP IN

(Note 7) V

V

CC5

V

CC3

V

PP IN

Operating Input Voltage (5V) V

Operating Input Voltage (3.3V) (Note 6) 3.0 3.3 6 V

Operating Input Voltage (12V) V

Supply Current (5V) V

Supply Current (3.3V) V

Supply Current (12V) V

CC OUT

V

CC OUT

CC OUT

V

CC OUT

CC OUT

CC OUT

PP OUT

PP OUT

CC5 IN

PP IN

= 90% to 10% of 3.3V 100 240 1000 µs
= 90% to 10% of 5.0V 100 600 2000

= 5V or 3.3V, I

CC OUT

= 0 8 50 µA

= 0V (Sleep Mode) 0.2 10

= 5V or 3.3V, I

CC OUT

= 0 40 100 µA

= 0V (Sleep Mode) 0.1 10

= 3.3V or 5V. I
= Hi-Z, 0 or V

PP OUT

PP

= 0 0.3 4 µA

0.3 4

not required for operation — 5.0 6 V

not required for operation — 12.0 14.5 V

(Note 8)

July 1999 57 MIC2562A

MIC2562A Micrel

Electrical Characteristics (continued)

Symbol Parameter Conditions Min Typ Max Units
THERMAL SHUTDOWN

T

SD

FLAG OUTPUT

VO OK FLAG Threshold Voltage FLAG High (OK) Threshold voltage VCC – 1 V

NOTE 1: Functional operation above the absolute maximum stress ratings is not implied.
NOTE 2: Static-sensitive device. Store only in conductive containers. Handling personnel and equipment should be grounded to

NOTE 3: RL = 100Ω connected to ground.
NOTE 4: RL = 10Ω connected to ground.
NOTE 5: Delay from commanding Hi Z or 0V to beginning slope. Does not apply to current limit or overtemperature shutdown

NOTE 6: The MIC2562A uses V
NOTE 7:V

NOTE 8: V
NOTE 9: A 10kΩ pull-up resistor is connected between FLAG and V

Thermal Shutdown Temperature 130 °C

(Note 9) VPP – 1

prevent damage from static discharge.

conditions.

for operation. For single 5V supply systems, connect 5V to both V

tions Information for further details.

is not required for operation.

PP IN

must be either high impedance or greater than or approximately equal to the highest voltage VCC in the system. For

PP IN

example, if both 3.3V and 5V are connected to the MIC2562A, V

CC3 IN

CC3

must be either 5V, 12V, or high impedance.

PP IN

IN.

CC3 IN

and V

. See Applica-

CC5IN

V

PP

Enable

0

12V

V

PP

Output

5V

3.3V

AB CD

VPP to 3.3V

t

7

t

4

t

1

0

t

9

t

14

EF G JH

VPP to 5VVPP to 3.3VVPP to 12V

V
OFF

PP

t

2

t

t

11

5

VPP to 12V

t

8

VPP to 5V

t

K

VPP to 12V VPP OFF

VPP OFF

t

13

10

t

6

t

3

t

15

t

12

t

16

FLAG

Figure 1. MIC2562A VPP Timing Diagram. VPP Enable is shown generically: refer to the timing tables (below). At
time “A” VPP = 3.3V is selected. At B, VPP is set to 12V. At C, VPP = 3.3V (from 12V). At D, VPP is disabled. At E, VPP is
programmed to 5V. At F, VPP is set to 12V. At G, VPP is programmed to 5V. At H, VPP is disabled. At J, VPP is set to
12V. And at K, VPP is again disabled. RL = 100Ω for all measurements. Load capacitance is negligible.

MIC2562A 58 July 1999

MIC2562A Micrel

ABC D

V

CC

Enable

VCC to 3.3V VCC to 5VVCC OFF VCC OFF

0

t

2

t

4

t

8

t

6

3.3V

V

CC

Output

FLAG

t

1

5V

0

0

t

3

t

7

t

5

Figure 2. MIC2562A VCC Timing Diagram. VCC Enable is shown generically: refer to the timing tables (below) for

specific control logic input. At time A, VCC is programmed to 3.3V. At B, VCC is disabled. At C, VCC is programmed

to 5V. And at D, VCC is disabled. RL = 10Ω. FLAG pull-up resistor is 10kΩ to V

CC3

IN.

MIC2562A-0 Control Logic Table

V

CC5_EN

0000Clamped to Ground High Z
0001Clamped to Ground High Z
0010Clamped to Ground High Z
0011Clamped to Ground Clamped to Ground
0100 3.3 High Z
0101 3.3 3.3
0110 3.3 12
0111 3.3Clamped to Ground
1000 5 High Z
1001 5 5
1010 5 12
1011 5Clamped to Ground
1100 3.3 High Z
1101 3.3 3.3
1110 3.3 5
1111 3.3Clamped to Ground

V

CC3_EN

EN1 EN0 V

CC OUT

V

PP OUT

July 1999 59 MIC2562A

MIC2562A Micrel

MIC2562A-1 Control Logic (compatible with Cirrus Logic CL-PD6710 & PD672x-series
Controllers)

V

CC5_EN

V

CC3_EN

0000Clamped to Ground Clamped to Ground
0001Clamped to Ground High Z
0010Clamped to Ground High Z
0011Clamped to Ground High Z
0100 5Clamped to Ground
0101 5 5
0110 5 12
0111 5 High Z
1000 3.3Clamped to Ground
1001 3.3 3.3
1010 3.3 12
1011 3.3 High Z
1100Clamped to Ground Clamped to Ground
1101Clamped to Ground High Z
1110Clamped to Ground High Z
1111Clamped to Ground High Z

V

PP_PGM

V

PP_VCC

V

CC OUT

V

PP OUT

MIC2562A-2 Logic (Compatible with Databook Controllers)

Pin 1 Pin 2 Pin 3 Pins 8, 10, 12 Pin 7

V

CCSEL0(1)VPPSEL0(1)VCCSEL2(3)

0 1 0 Hi-Z Clamped to Ground
1 1 0 3.3V 3.3V
0 0 0 3.3V 12V
1 0 0 3.3V Clamped to Ground
0 1 1 Hi-Z Clamped to Ground
1 1 1 5V 5V
001 5V 12V
1 0 1 5V Clamped to Ground

The Databook DB86184 PCMCIA controller requires two 100kΩ pull-down resistors from pins 5 and 7 to
ground and a 100kΩ pull-up resistor from pin 6 to +3.3V (or +5V). Connect MIC2560-2 pin 8 to ground.

V

CC OUT

V

PP OUT

MIC2562A 60 July 1999

MIC2562A Micrel

Applications Information

PC Card VCC and VPP control is easily accomplished using
the MIC2562A PC Card/CardBus Slot VCC & VPP Power
Controller IC. Four control bits determine V

voltage and standby/operate mode condition. VCC out-

OUT

CC OUT

puts of 3.3V and 5V at the maximum allowable PC Card
current are supported. V

output voltages of V

PP OUT

or 5V), VPP, 0V, or a high impedance state are available.
When the VCC clamped to ground condition is selected, the
device switches into “sleep” mode and draws only nano­amperes of leakage current. An error flag alerts the user if the
output voltage is too low because of overtemperature or
overcurrent faults. Protection from hot switching is provided
which prevents feedback from the V

CC OUT

(from 5V to 3.3V,
for example) by locking out the low voltage switch until the
initial switch’s gate voltage drops below the desired lower
VCC.

The MIC2562A operates from the computer system main
power supply. Device logic and internal MOSFET drive is
generated internally by charge pump voltage multipliers
powered from V

IN. Switching speeds are carefully con-

CC3

trolled to prevent damage to sensitive loads and meet all PC
Card Specification speed requirements.

Supply Bypassing

External capacitors are not required for operation. The
MIC2562A is a switch and has no stability problems. For best
results however, bypass V

CC3

IN, V

CC5

IN, and V
with 1µF capacitors to improve output ripple. As all internal
device logic and comparison functions are powered from the
V

IN line, the power supply quality of this line is the most

CC3

important, and a bypass capacitor may be necessary for
some layouts. Both V

CC OUT

and V

PP OUT

0.01µF to 0.1µF capacitors for noise reduction and electro­static discharge (ESD) damage prevention. Larger values of
output capacitors are not necessary.

PC Card Slot Implementation

The MIC2562A is designed for full compatibility with the
Personal Computer Memory Card International Associa­tion’s (PCMCIA) PC Card Specification, (March 1995), in­cluding the CardBus option. One MIC2562A is required for
each PC Card slot.

When a memory card is initially inserted, it should receive
VCC — either 3.3V ± 0.3V or 5.0V ±5%. The initial voltage is
determined by a combination of mechanical socket “keys”
and voltage sense pins. The card sends a handshaking data
stream to the controller, which then determines whether or
not this card requires VPP and if the card is designed for dual
VCC. If the card is compatible with and desires a different V
level, the controller commands this change by disabling VCC,
waiting at least 100ms, and then re-enabling the other V
voltage.

VCC switches are turned ON and OFF slowly. If commanded
to immediately switch from one VCC to the other (without
turning OFF and waiting 100ms first), enhancement of the
second switch begins after the first is OFF, realizing break­before-make protection. VPP switches are turned ON slowly
and OFF quickly, which also prevents cross conduction.

and V

PP

(3.3V

CC

IN inputs

PP

pins may use

CC

CC

If no card is inserted or the system is in sleep mode, the slot
logic controller outputs a (V

CC3

IN, V

IN) = (0,0) to the

CC5

MIC2562A, which shuts down VCC. This also places the
switch into a high impedance output shutdown (sleep) mode,
where current consumption drops to nearly zero, with only
tiny CMOS leakage currents flowing.

Internal device control logic and MOSFET drive and bias
voltage is powered from V

IN. The high voltage bias is

CC3

generated by an internal charge pump quadrupler. Systems
without 3.3V may connect V

IN to 5V. Input logic threshold

CC3

voltages are compatible with common PC Card logic control­lers using either 3.3V or 5V supplies.

The PC Card Specification defines two VPP supply pins per
card slot. The two VPP supply pins may be programmed to
different voltages. VPP is primarily used for programming
FLASH memory cards. Implementing two independent V

PP

voltages is easily accomplished with the MIC2562A and a
MIC2557 PCMCIA VPP Switching Matrix. Figure 3 shows this
full configuration, supporting independent VPP and both 5.0V
and 3.3V VCC operation. However, few logic controllers
support multiple VPP—most systems connect V

PP1

to V

PP2

and the MIC2557 is not required. This circuit is shown in
Figure 4.

During Flash memory programming with standard (+12V)
Flash memories, the PC Card slot logic controller outputs a
(0,1) to the EN0, EN1 control pins of the MIC2562A, which
connects VPP IN (nominally +12V) to V

PP OUT

. The low ON
resistance of the MIC2562A switch allows using a small
bypass capacitor on the V

pins, with the main filtering

PP OUT

action performed by a large filter capacitor on VPP IN (usually
the main power supply filter capacitor is sufficient). Using a
small-value capacitor such as 0.1µF on the output causes
little or no timing delays. The V

transition from VCC to

PP OUT

12.0V typically takes 250µs. After programming is com­pleted, the controller outputs a (EN1, EN0) = (0,1) to the
MIC2562A, which then reduces V

PP OUT

to the VCC level.
Break-before-make switching action and controlled rise times
reduces switching transients and lowers maximum current
spikes through the switch.

Figure 5 shows MIC2562A configuration for situations where
only a single +5V VCC is available.

Output Current and Protection

MIC2562A output switches are capable of passing the maxi­mum current needed by any PC Card. The MIC2562A meets
or exceeds all PCMCIA specifications. For system and card
protection, output currents are internally limited. For full
system protection, long term (millisecond or longer) output
short circuits invoke overtemperature shutdown, protecting
the MIC2562A, the system power supplies, the card socket
pins, and the PC Card. A final protective feature is the error
FLAG, which signals the PC Card slot logic controller when
a fault condition exists, allowing the controller to notify the
user that the card inserted has a problem. The open-drain
FLAG monitors the voltage level on both V

and activates (pulls low) when either output is 1V below

OUT

CC OUT

and V

PP

its programmed level or an overtemperature fault exists.
This FLAG signals output voltage transitions as well as fault

conditions. Refer to Figures 1 and 2 for details.

July 1999 61 MIC2562A

MIC2562A Micrel

System

Power
Supply

PCMCIA

Card Slot

Controller

MIC2562

PCMCIA

Card Slot

5V

3.3V

12V

(opt)

EN0

EN1

V

PP1

V

CC

VPPIN

(opt)

V

CC5

IN

V

CC3

IN

V

CC5_EN

V

CC3_EN

V

PP2

5V

System

Power

3.3V

Supply

PCMCIA

Card Slot

Controller

12V

V

EN0

EN1

PP IN

V

DD

V

PP

MIC2557

V

OUT

CC

VPPIN

(opt)

EN0

EN1

V

CC5_EN

V

CC3_EN

IN

CC3

MIC2562

V

INV

CC5

PCMCIA

Card Slot

V

PP1

V

PP2

V

CC

Figure 3. MIC2562A PC Card slot power control applica­tion with dual VCC (5V and 3.3V) and separate V
V

.

PP2

5V

System

Power

Supply

12V

(opt)

PCMCIA

Card Slot

Controller

PP1

and

Figure 4. Typical MIC2562A PC Card slot power control
application with dual VCC (5V and 3.3V). Note that V
V

are driven together.

PP2

V

VPPIN

(opt)

EN0

EN1

V

CC5_EN

V

CC3_EN

IN

CC3

MIC2562

V

IN

CC5

V

V

V

PP1

PP2

CC

PCMCIA

Card Slot

PP1

and

Figure 5. PC Card slot power control application without an available 3.3V VCC. Note that V
together. The MIC2562A is powered by the V
is enabled from the logic table. Take advantage of the lower switch resistance of the V
control as your main VCC switch.

MIC2562A 62 July 1999

and V

line. In this configuration, V

CC3 IN

will be 5V when either V

CC OUT

CC3 IN

switch by using the V

CC5

are driven

CC5 IN

CC3

or V

CC5_EN

CC5