Diodes AP2281-1FMG, AP2281-1WG, AP2281-3FMG, AP2281-3WG Schematic

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V

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Green

SINGLE SLEW RATE CONTROLLED LOAD SWITCH

Description

The AP2281 slew rate controlled load switch is a single P-channel

MOSFET power switch designed for high-side load-switching

applications. The MOSFET has a typical R

allowing increased load current handling capacity with a low forward

voltage drop. The turn-on slew rate of the device is controlled

internally.

The AP2281 load switch is designed to operate from 1.5V to 6V,

making it ideal for 1.8V, 2.5V, 3.3V, and 5V systems. The typical

quiescent supply current is only 0.01µA.

of 80m at 5V,

DS(ON)

Features

 Wide input voltage range: 1.5V – 6V

 Low R

 Turn-on slew rate controlled

 AP2281-1: 1ms turn-on rise time

 AP2281-3: 100µs turn-on rise time with internal discharge

 Very low turn-on quiescent current: << 1µA

 Fast load discharge option

 Temperature range -40°C to +85°C  Lead-Free Finish; RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3)

: 80mΩ typical @ 5V

DS(ON)

Applications

 Smart Phones  PDA  Cell Phones  GPS Navigators  PMP/MP4  Notebook and Pocket PC

Notes: 1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.

Pin Assignments

OUT

GND

EN IN

( Top View )

1

IN

2

IN

3

EN

U-DFN2018-6

1

2

7

(Top View)

SOT26

6

OUT

5

OUT

4

GND

IN

6

GND

5

43

P2281

Typical Applications Circuit

AP2281

Document number: DS31359 Rev. 7 - 2

IN

1uF

IN

Enable

EN

OUT

GND

OUT

V

0.1uF

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Pin Descriptions

P2281

Pin Name

OUT

GND 2, 5 4 Ground.

EN 3 3 Enable input, active high

IN

PAD 7 Thermal pad. Suggest connecting to ground plane to get better heat dissipation.

Pin Number

SOT26 U-DFN2018-6

1 5, 6

4, 6 1, 2

Voltage output pin. This is the pin to the P-channel MOSFET drain connection. Bypass to ground through a 0.1uF capacitor.

Voltage input pin. This is the pin to the P-channel MOSFET source. Bypass to ground through a 1µF capacitor.

Function

Options

Part Number Slew Rate (typ) Active Pull Down Enable

AP2281-1 1ms No Active High

AP2281-3 100µs Yes Active High

Functional Block Diagram

AP2281

Document number: DS31359 Rev. 7 - 2

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P2281

Absolute Maximum Ratings (@T

= +25°C, unless otherwise specified.)

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Symbol Parameter Ratings Unit

ESD HBM Human Body Model ESD Protection 5 KV

ESD MM Machine Model ESD Protection

V

IN

V

OUT

V

EN

I

load

T

J

T

ST

P

D

Notes: 4. TJ, max = +125°C.

5. Ratings apply to ambient temperature at +25°C.

Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only; functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time.

Input Voltage 6.5 V

Output Voltage VIN +0.3 V

Enable Voltage 6.5 V

Maximum Continuous Load Current 2 A

Operating Junction Temperature Range -40 to +125 °C

Storage Temperature Range -65 to +150 °C

Power Dissipation

SOT26 (Note 4, 5, 6) 720 mW

U-DFN2018-6 (Note 4, 5, 7) 1410 mW

SOT26 500 V

U-DFN2018-6 450 V

Recommended Operating Conditions (@T

= +25°C, unless otherwise specified.)

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Symbol Parameter Min Max Unit

V

I

OUT

T

IN

A

Input voltage 1.5 6.0 V

Output Current 0 2.0 A

Operating Ambient Temperature -40 +85 °C

Electrical Characteristics (@T

= +25°C, unless otherwise specified.)

A

Symbol Parameters Test Conditions Min Typ Max Unit

I

SHDN

I

LEAK

R

DS(ON)

V

I

SINK

T

D(ON)

T

D(OFF)

R

DISCH

θJA

θJC

I

ON

Q

Input Quiescent Current

Input Shutdown Current

Input Leakage Current

Switch on-resistance

V

= VIN, I

EN

V

= 0V, OUT open

EN

V

= 0V, OUT grounded

EN

= 5.0V

V

IN

OUT

= 0

VIN = 3.3V

VIN = 1.8V

VIN = 1.5V

IL

IH

EN Input Logic Low Voltage

EN Input Logic High Voltage

EN Input leakage

Output turn-on delay time

Output turn-on rise time

Output turn-off delay time

Discharge FET on-resistance

V

= 1.5V to 6V

IN

1.5V ≤ V

≤ 2.7V

IN

2.7V < VIN < 5.25V

V

≥ 5.25V

IN

V

= 5V

EN

R

= 10Ω

LOAD

AP2281-1, R

AP2281-3, R

R

= 10Ω

LOAD

= 10Ω

For AP2281-3 only, V

= GND

EN

SOT26 (Note 6)

Thermal Resistance Junction-to-Ambient

U-DFN2018-6 (Note 7)

SOT26 (Note 6)

Thermal Resistance Junction-to-case

U-DFN2018-6 (Note 7)

— 0.01 1 μA

—

— —

1.4

1.6

1.7

— —

—

0.01 1 μA

80 100 mΩ

95 120

160 210

mΩ

210 280 mΩ

0.4 V

— —

1 μA

1 — μS

1000 1500 μS

100 150 μS

0.5 1 μS

65 100 Ω

153

78

29

19

—

°C/W

V

Notes: 6. Test condition for SOT26: Device mounted on FR-4 substrate PC board, 2oz copper, with minimum recommended pad layout.

7. Test condition for U-DFN2018-6: Device mounted on FR-4 2-layer board, 2oz copper, with minimum recommended pad on top layer and 3 vias to bottom layer 1.0"x1.4" ground plane.

AP2281

Document number: DS31359 Rev. 7 - 2

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Typical Performance Characteristics

P2281

Quiescent Current vs. Input Voltage

0.01

A)



0.008

0.006

0.004

0.002

Quiescent Current (

0

1.02.0 3.04.0 5.06.0

Inpu t Voltage (V)

R

vs. Input Voltage

DS( ON)

I=100mA

I=500mA

I=1A

I=2A

)



300.00

250.00

200.00

(m

150.00

DS(ON)

R

100.00

50.00

1.522.533.544.555.56

Input Voltage (V)

Quiescent Current vs. Temperature

0.010

A)

0.008



0.006

0.004

0.002

VIN=1.8V

VIN=3.3V

VIN=5.0V

Quiescent Current (

0.000

-50 -25 0 25 50 75 100 125

Temperature (°C)

R

vs. Temperature

DS( ON)

200.00

180.00

160.00

140.00

)



120.00

(m

100.00

80.00

DS(ON)

R

60.00

40.00

20.00

0.00

-50 -25 0 25 50 75 100

Temperature (°C)

VIN =1.8V

VIN =3.3V

VIN =5V

ENABLE Threshold vs. Input Voltage

1.8

1.6

1.4

1.2

1.0

0.8

ON/OFF Threshold (V)

0.6

0.4

1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0

AP2281

Document number: DS31359 Rev. 7 - 2

Input Voltage (V )

VIL (V)

VIH (V)

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Input Shutdown Current vs. Temperature

0.010

0.008

A)

0.006



(

0.004

SHDN

I

0.002

0.000

-50 -25 0 25 50 75 100 125

Temperature (°C)

November 2013

Diodes AP2281-1FMG, AP2281-1WG, AP2281-3FMG, AP2281-3WG Schematic [ru]