Single 2A/Dual 1A High-Side Switches

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 2016 Microchip Technology Inc.

DS20005579A-page 1

MIC2505/6

Features

• Low MOSFET On-Resistance to 3.0V

- 30 mΩ Typical at 5V (MIC2505 Series)
- 35 mΩ Typical at 3.3V (MIC2505 Series)
- 75 mΩ Typical at 5V (Each MIC2506 Output)
- 80 mΩ Typical at 3.3V (Each MIC2506 Out-

put)

• 3.0V to 7.5V Input
• 110 µA Typical On-State Supply Current
• 1 µA Typical Off-State Supply Current
• Output Can be Forced Higher than Input 

(Off-State)

• Current-Limit
• Thermal Shutdown
• 2.5V Undervoltage Lockout (UVLO)
• Open-Load Detection (MIC2505YN/M and 

MIC2506YN/M Only)

• Open-Drain Fault Flag
• 5 ms (Slow) Turn-On and Fast Turn-Off
• Logic-Level Control/Enable Input

Applications

• USB Power Distribution
• 3.3V and 5V Power Management
• PC Card Inrush Limiting Switch
• Hot Plug-In Power Supplies
• Battery Charger Circuits

General Description

The MIC2505, MIC2505-1, MIC2505-2, and MIC2506
are single and dual integrated high-side power
switches that consist of TTL-compatible control/enable
inputs, a charge pump, and protected N-channel
MOSFETs. The MIC2505/6 family can be used instead
of separate high-side drivers and MOSFETs in many
low-voltage applications.
The MIC2505/6 family controls voltages ranging from
3.0V to 7.5V. The MIC2505-series can deliver at least
2A continuous current while the MIC2506 can deliver at
least 1A continuous current from each output. A slow
turn-on feature prevents high inrush current when
switching capacitive loads. The internal control circuitry
is powered from the same 3.0V to 7.5V. Within the
device’s input range, outputs can be forced higher than
the input voltage when disabled.
Multipurpose open-drain fault flag outputs indicate
overcurrent limiting, open-load detection (except
MIC2505-1 and -2 versions), thermal shutdown, or
undervoltage lockout for each channel.
Overcurrent limiting is internally fixed and requires no
external components.
Open-load detection is active when the switch is off.
When off, a normal load pulls the output pin low. If the
load is open, an optional, external, high-value resistor
pulls the output pin high, triggering the fault flag.
MIC2505-1 and -2 versions are tailored to Universal
Serial Bus (USB) applications and do not include
open-load detection.
Thermal shutdown turns off the output if the die
temperature exceeds approximately 135°C. If enabled,
the switch automatically restarts when the temperature
falls 10°C.
Undervoltage lockout (UVLO) shuts off the output if the
supply drops below 2.3V typical and re-enables the
output when the supply exceeds 2.5V typical.

Single 2A/Dual 1A High-Side Switches

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MIC2505/6

DS20005579A-page 2

 2016 Microchip Technology Inc.

Package Types

Typical Application Schematics

MIC2505/-1/-2

8-Pin SOIC (M)

(Top View)

MIC2506

8-Pin SOIC (M)

(Top View)

1

2

3

4

8

7

6

5

OUT

IN

OUT

IN

CTL

FLG

GND

GATE

MIC2505/-1/-2

1

2

3

4

8

7

6

5

OUT A

IN

GND

OUT B

CTL A

FLG A

FLG B

CTL B

MIC2506

Single and Dual Switch/Circuit Breakers with Open-Load Detection and Fault Output

ON

OFF

MIC2505YM

Load

CTL

OUT

FLG

GND

OUT

GATE

IN

Optional
Output Delay
Capacitor

100

IN

FAULT

3.0V to 7.5V

 Pull-up

Resistor

8

1

7

2

6

3

5

4

Optional

Open Load

Detect Resistor

(MIC2505YN or

MIC2505YM

onl

\

0.1μF

Load A

A ON

A OFF

MIC2506YM

CTL A OUT A

FLG A

FLG B

GND

CTL B OUT B

IN

FAULT A

3.0V to 7.5V

 Pull-up

Resistors

NȍHDFK

8

1

7

2

6

3

5

4

Optional
Open Load
Dete

FWResistors

0.1μF

Load B

B ON

B OFF

FAULT B

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 2016 Microchip Technology Inc.

DS20005579A-page 3

MIC2505/6

Functional Block Diagrams

MIC2505 Series Block Diagram

MIC2506 Block Diagram

1.2V

REFERENCE

THERMAL

SHUTDOWN

OSC.

CHARGE

PUMP

OUT

UVLO

GATE

CONTROL

IN

OPEN LOAD

DETECT

FLG

CTL

CURRENT

LIMIT

GATE

GND

Not Included in

MIC2505-1, -2

MIC2505/2505-1/2505-2

1.2V

REFERENCE

THERMAL

SHUTDOWN

CHARGE

PUMP

OUT B

UVLO

GATE

CONTROL

IN

OPEN LOAD

DETECT

CTL A

GATE

CONTROL

OUT A

OPEN LOAD

DETECT

FLG B

CHARGE

PUMP

CTL B

OSC.

FLG A

CURRENT

LIMIT

CURRENT

LIMIT

GND

MIC2506

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MIC2505/6

DS20005579A-page 4

 2016 Microchip Technology Inc.

1.0

ELECTRICAL CHARACTERISTICS

Absolute Maximum Ratings †

Supply Voltage (V

IN

).................................................................................................................................................+8.0V

Fault Flag Voltage (V

FLG

) .........................................................................................................................................+7.5V

Fault Flag Current (I

FLG

) .........................................................................................................................................50 mA

Output Voltage (V

OUT

)................................................................................................................................................7.5V

Output Current (I

OUT

) .............................................................................................................................Internally Limited

Gate Voltage (V

GATE

) ........................................................................................................................................ V

IN

 + 15V

Control Input (V

CTL

) ................................................................................................................................... –0.3V to +15V

Operating Ratings ‡

Supply Voltage (V

IN

).................................................................................................................................. +3.0V to +7.5V

 Notice: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.

This is a stress rating only and functional operation of the device at those or any other conditions above those indicated
in the operational sections of this specification is not intended. Exposure to maximum rating conditions for extended
periods may affect device reliability.
‡ Notice:

 The device is not guaranteed to function outside its operating ratings.

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 2016 Microchip Technology Inc.

DS20005579A-page 5

MIC2505/6

TABLE 1-1:

ELECTRICAL CHARACTERISTICS

Electrical Characteristics:

 V

IN

 = +5V, GATE = open, T

A

 = 25°C, bold values are valid for –40°C ≤ T

A

 ≤ +85°C, 

unless noted. (

Note 1

)

.

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

Supply Current

I

DD

0.75

5

µA

MIC2505-1, MIC2506, V

CTL

 = 

logic 0, OUT = open.

110

160

µA

MIC2505-1, MIC2506, V

CTL

 = 

logic 1, OUT = open.

110

160

µA

MIC2505-2, V

CTL

 = logic 0, 

OUT = open.

0.75

5

µA

MIC2505-2, V

CTL

 = logic 1, 

OUT = open.

Control Input Voltage

V

CTL

2.1

2.4

V

V

CTL

 = logic 0 to logic 1 

transition

0.8

1.9

V

V

CTL

 = logic 1 to logic 0 

transition

Control Input Current

I

CTL

0.01

1

µA

V

CTL

 = logic 0

0.01

1

µA

V

CTL

 = logic 1

Control Input Capacitance

C

CTL

1

pF

Output MOSFET Resistance

R

DS(ON)

30

50

mΩ

MIC2505 Series, V

IN

 = 5V, 

T

A

 = 25°C.

60

mΩ

MIC2505 Series, V

IN

 = 5V, 

–40°C < T

A

 < +85°C.

35

60

mΩ

MIC2505 Series, V

IN

 = 3.3V, 

T

A

 = 25°C.

75

mΩ

MIC2505 Series, V

IN

 = 3.3V, 

–40°C < T

A

 < +85°C.

75

125

mΩ

MIC2506, V

IN

 = 5V, 

T

A

 = 25°C.

150

mΩ

MIC2506, V

IN

 = 5V, 

–40°C < T

A

 < +85°C.

80

135

mΩ

MIC2506, V

IN

 = 3.3V, 

T

A

 = 25°C.

165

mΩ

MIC2506, V

IN

 = 3.3V, 

–40°C < T

A

 < +85°C.

Output Turn-On Delay

t

ON

200

850

2000

µs

MIC2505 Series, R

L

 = 10Ω, 

C

GATE

 = 0.

100

700

2000

µs

MIC2506, R

L

 = 10Ω each 

output.

Output Turn-On Rise Time

t

R

500

3000

7500

µs

MIC2505 Series, R

L

 = 10Ω, 

C

GATE

 = 0.

200

2000

6000

µs

MIC2506, R

L

 = 10Ω each 

output.

Note 1:

Devices are ESD protected; however, handling precautions recommended. All limits guaranteed by testing 
or statistical analysis.

2:

MIC2505-1 and -2 versions have no open load detect feature.

3:

Open load threshold is the output voltage (V

OUT

) where FLG becomes active (low) when CTL is low. OUT 

is pulled high by a 100 kΩ external resistor to V

IN

.

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MIC2505/6

DS20005579A-page 6

 2016 Microchip Technology Inc.

Output Turn-Off Delay

t

OFF

0.7

20

µs

MIC2505 Series, R

L

 = 10Ω, 

C

GATE

 = 0.

0.8

20

µs

MIC2506, R

L

 = 10Ω each 

output.

Output Turn-Off Fall Time

t

F

1.5

20

µs

MIC2505 Series, R

L

 = 10Ω, 

C

GATE

 = 0.

0.7

20

µs

MIC2506, R

L

 = 10Ω each 

output.

Output Leakage Current

I

LKG

10

µA

Current Limit Threshold

I

LIM

2

4

A

MIC2505 Series

1

2

3

A

MIC2506

Open Load Threshold (

Note 2

)

V

OPENL_TH

0.5

1

1.5

V

V

CTL

 = logic low, 

Note 3

Overtemperature Shutdown 
Threshold

T

SD

135

°C

T

J

 increasing

125

°C

T

J

 decreasing

Error Flag Output Resistance

R

FLG

10

25

V

IN

 = 5V, I

L

 = 10 mA

15

40

V

IN

 = 3.3V, I

L

 = 10 mA

Error Flag Off Current

I

FLG_OFF

0.01

1

µA

V

FLAG

 = 5V

UVLO Threshold

V

UVLO_TH

2.2

2.5

3.0

V

V

IN

 increasing

UVLO Hysteresis

V

UVLO_TH_

HYST

215

mV

MIC2505

235

mV

MIC2506

TABLE 1-1:

ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrical Characteristics:

 V

IN

 = +5V, GATE = open, T

A

 = 25°C, bold values are valid for –40°C ≤ T

A

 ≤ +85°C, 

unless noted. (

Note 1

)

.

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

Note 1:

Devices are ESD protected; however, handling precautions recommended. All limits guaranteed by testing 
or statistical analysis.

2:

MIC2505-1 and -2 versions have no open load detect feature.

3:

Open load threshold is the output voltage (V

OUT

) where FLG becomes active (low) when CTL is low. OUT 

is pulled high by a 100 kΩ external resistor to V

IN

.

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DS20005579A-page 7

MIC2505/6

TEMPERATURE SPECIFICATIONS

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

Temperature Ranges
Ambient Operating Temperature 

T

A

–40

+85

°C

Storage Temperature Range

T

S

–65

+150

°C

Lead Temperature

+260

°C

Soldering, 5s

Package Thermal Resistances
Thermal Resistance, SOIC

JA

160

°C/W

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MIC2505/6

DS20005579A-page 8

 2016 Microchip Technology Inc.

2.0

TYPICAL PERFORMANCE CURVES

FIGURE 2-1:

MIC2505 Turn-On, Turn-Off 

Characteristics.

FIGURE 2-2:

Output On Resistance vs. 

Supply Voltage.

FIGURE 2-3:

Output On Resistance vs. 

Temperature.

FIGURE 2-4:

MIC2506 Turn-On, Turn-Off 

Characteristics.

FIGURE 2-5:

UVLO Threshold Voltage vs. 

Temperature.

FIGURE 2-6:

Error Flag Voltage vs. Error 

Flag Current.

Note:

The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.

-2

0

2

4

TIME (

μs)

-5

0

5

10

CONTROL (V)

-2

0

2

4

6

-2

0

2

4

6

OUTPUT (V)

TIME (ms)

R

L

 = 5

Ω

(I

L

 = 1A)

0

20

40

60

80

100

2

3

4

5

6

7

8

OUTPUT RESISTANCE (m

Ω

)

SUPPLY VOLTAGE (V)

MIC2505

MIC2506

0

20

40

60

80

100

-40 -20

0

20

40

60

80 100

ON RESISTANCE (m

Ω

)

TEMPERATURE (

°C)

MIC2506

MIC2505

-1

0

1

2

TIME (

μs)

-5

0

5

10

CONTROL (V)

-2

0

2

4

6

-2

0

2

4

6

OUTPUT (V)

TIME (ms)

R

L

 = 5

Ω

(I

L

 = 1A)

1.5

2.0

2.5

3.0

-40 -20

0

20

40

60

80 100

THRESHOLD VOLTAGE (V)

TEMPERATURE (

°C)

V

IN

 RISING

V

IN

 FALLING

0

100

200

300

400

0.1

1

10

100

ERROR FLAG VOLTAGE (mV)

ERROR FLAG CURRENT (mA)

FLG = ACTIVE

V

DD

 = 3.3V

V

DD

 = 5V

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DS20005579A-page 9

MIC2505/6

FIGURE 2-7:

On-State Supply Current vs. 

Supply Voltage.

FIGURE 2-8:

Off-State Supply Current vs. 

Supply Voltage.

FIGURE 2-9:

Control Threshold vs. 

Supply Voltage.

FIGURE 2-10:

On-State Supply Current vs. 

Temperature.

FIGURE 2-11:

Off-State Supply Current vs. 

Temperature.

FIGURE 2-12:

Control Threshold vs. 

Temperature.

0

20

40

60

80

100

120

140

160

180

200

2

3

4

5

6

7

8

SUPPLY CURRENT (

μ

A)

SUPPLY VOLTAGE (V)

0

0.5

1.0

1.5

2.0

2

3

4

5

6

7

8

SUPPLY CURRENT (

μ

A)

SUPPLY VOLTAGE (V)

1.0

1.5

2.0

2.5

2

3

4

5

THRESHOLD VOLTAGE (V)

SUPPLY VOLTAGE (V)

V

CTL

 RISING

V

CTL

 FALLING

0

20

40

60

80

100

120

140

160

180

200

-40 -20

0

20

40

60

80 100

SUPPLY CURRENT (

μ

A)

TEMPERATURE (

°C)

0

0.5

1.0

1.5

2.0

-40 -20

0

20

40

60

80 100

SUPPLY CURRENT (

μ

A)

TEMPERATURE (

°C)

1

1.5

2.0

2.5

-40 -20

0

20

40

60

80 100

THRESHOLD VOLTAGE (V)

TEMPERATURE (

°C)

V

CTL

 RISING

V

CTL

 FALLING

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MIC2505/6

DS20005579A-page 10

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FIGURE 2-13:

MIC2505 Turn-On Delay 

with External Gate Capacitance

.

3.0

TEST CIRCUITS

FIGURE 3-1:

MIC2505 Series Test Circuit.

FIGURE 3-2:

MIC2506 Test Circuit.

0

200

400

600

800

1000

0

50

100

150

200

250

TURN-ON DELAY (ms)

CAPACITANCE (nF)

MIC2505/-1/-2

CTL

OUT

FLG

GND

OUT

GATE

IN

IN

+5V

1μF

10

Ω

V

FLG

10k

Ω

MIC2506YM

CTL A OUT A

FLG A

GND

CTL B OUT B

IN

FLG B

B ON

B OFF

A ON

A OFF

+5V

1μF

10

Ω

10

Ω

10k

Ω

V

FLG A

V

FLG B

10k

Ω

Maker
Microchip Technology Inc.
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