Diodes AP2181, AP2191 User Manual

AP2181/ AP2191

1.5A SINGLE CHANNEL CURRENT-LIMITED POWER SWITCH

Description

The AP2181 and AP2191 are integrated high-side power switches optimized for Universal Serial Bus (USB) and other hot-swap applications. The family of devices complies with USB 2.0 and available with both polarities of Enable input. They offer current and thermal limiting and short circuit protection as well as controlled rise time and under-voltage lockout functionality. A 7ms deglitch capability on the open-drain Flag output prevents false over-current reporting and does not require any external components.

All devices are available in SO-8, MSOP-8EP, SOT25 and U-DFN2018-6 packages.

Pin Assignments

GND

IN

EN

( Top View )

1

2

3

IN

4

SO-8

8

NC

7

OUT

6

OUT

5

FLG

Features

 Single USB Port Power Switches  Over-Current and Thermal Protection  2.1A Accurate Current Limiting  Reverse Current Blocking  95m On-Resistance  Input Voltage Range: 2.7V – 5.5V  0.6ms Typical Rise Time  Very Low Shutdown Current: 1µA (max)  Fault Report (FLG) with Blanking Time (7ms typ)  ESD Protection: 4kV HBM, 300V MM  Active Low (AP2181) or Active High (AP2191) Enable  Ambient Temperature Range: -40°C to +85°C  SOT25, SO-8, MSOP-8EP (Exposed Pad), and U-DFN2018-6:

Available in “Green” Molding Compound (No Br, Sb)

 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3)

 UL Recognized, File Number E322375  IEC60950-1 CB Scheme Certified

GND

IN

( Top View )

1

2

3

6

5

4

OUT OUT FLGEN

Applications

 Consumer electronics – LCD TV & Monitor, Game Machines  Communications – Set-Top-Box, GPS, Smartphone  Computing – Laptop, Desktop, Servers, Printers, Docking

Station, HUB

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

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.

AP2181/ AP2191

Document number: DS31563 Rev. 7 - 2

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U-DFN2018-6

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Typical Applications Circuit

AP2191 Enable Active High

AP2181/ AP2191

Power Supply

2.7V to 5.5V

10uF

10k

ON

OFF

IN

0.1uF

FLG

EN

GND

OUT

0.1uF 120uF

Load

Available Options

Part Number Channel Enable Pin (EN)

AP2181 1 Active Low 2.1A 1.5A AP2191 1 Active High 2.1A 1.5A

Current Limit

(typ)

Recommended Maximum Continuous

Load Current

Pin Descriptions

Name

GND 1 1 2 1 Ground

IN

EN 4 4 4 3 Enable input, active low (AP2181) or active high (AP2191)

FLG 5 5 3 4

OUT

NC

Exposed tab - Exposed tab - Exposed tab

SO-8 MSOP-8EP SOT25 U-DFN2018-6

2, 3 2, 3 5 2 Voltage input pin (all IN pins must be tied together externally )

6, 7 6, 7 1 5, 6 Voltage output pin (all OUT pins must be tied together externally )

8 8 N/A N/A No internal connection; recommend tie to OUT pins

AP2181/ AP2191

Document number: DS31563 Rev. 7 - 2

Pin Number

Function

Over-current and over-temperature fault report; open-drain flag is active low w hen triggered

Exposed pad. It should be connected to GND and thermal mass for enhanced thermal

impedance. It sho u l d n ot be used a s elect rical g r ound c o n ducti o n path.

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Functional Block Diagram

AP2181/ AP2191

AP2181, AP2191

Current

Sense

Current

Limit

Deglitch

GND

EN

IN

UVLO

Driver

Thermal

Sense

OUT

FLG

Absolute Maximum Ratings (@T

= +25°C, unless otherwise specified.)

A

Symbol Parameter Ratings Units

ESD HBM Human Body Model ESD Protection 4 kV

Machine Model ESD Protection

ESD MM

for MSOP-8EP, SOT25 packages Machine Model ESD Protection

for U-DFN2018-6, SO-8 packages

VIN

V

OUT

V

EN , VFLG

I

LOAD

T

J(MAX)

TST

Caution: 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. Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when handling and transporting these devices

Note: 4. UL Recognized Rating from -30°C to +70°C (Diodes qualified

Input Voltage 6.5 V Output Voltage Enable Voltage 6.5 V Maximum Continuous Load Current Internal Limited A Maximum Junction Temperature 150 °C Storage Temperature Range (Note 4) -65 to +150 °C

T

from -65°C to +150°C)

ST

400 V

300 V

VIN +0.3

V

Recommended Operating Conditions (@T

= +25°C, unless otherwise specified.)

A

Symbol Parameter Min Max Units

V

IN

I

OUT

T

A

VIH High-Level Input Voltage on EN or EN

VIL Low-Level Input Voltage on EN or EN

Input voltage 2.7 5.5 V Output Current 0 1.5 A Operating Ambient Temperature -40 85

2.0 V

V

IN

C

0 0.8 V

AP2181/ AP2191

Document number: DS31563 Rev. 7 - 2

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AP2181/ AP2191

Electrical Characteristics (@T

Symbol Parameter Test Conditions Min Typ Max Unit

V

I

R

I

SHORT

T

Notes: 5. Test condition for SO-8: Device mounted on FR-4, 2oz copper, with minimum recommended pad layout.

6. Test condition for MSOP-8EP: Device mounted on 2” x 2” FR-4 substrate PC board, 2oz copper, with minimum recommended pad on top layer and thermal vias to bottom layer ground plane.

7. Test condition for SOT25: Device mounted on FR-4, 2oz copper, with minimum recommended pad layout. layer 1.0”x1.4” ground plane.

Input UVLO

UVLO

Input Shutdown Current

SHDN

Input Quiescent Current

I

Q

Input Leakage Current Disabled, OUT grounded 1 µA

I

LEAK

Reverse Leakage Current

I

REV

Switch On-Resistance

DS(ON)

Short-Circuit Current Limit Over-Load Current Limit

I

LIMIT

Current Limiting Trigger Threshold

I

Trig

EN Input Logic Low Voltage

V

IL

EN Input Logic High Voltage

V

IH

EN Input Leakage

I

SINK

Output Turn-On delay time

D(ON)

Output Turn-On rise time

TR

Output Turn-Off delay time

D(OFF)

Output Turn-Off fall time

TF

FLG Output FET On-Resistance

R

FLG

FLG Blanking Time

Blank

Thermal Shutdown Threshold

SHDN

Thermal Shutdown Hysteresis 25

T

HYS

Thermal Resistance Junction-to-



JA

Ambient

8. 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

= +25°C, VIN = +5V, unless otherwise specified.)

A

R

= 1k

LOAD

Disabled, I Enabled, I

Disabled, V

= 5V,

V

IN

I

= 1.5A

OUT

VIN = 3.3V,

= 1.5A

I

OUT

= 0

OUT

= 0

OUT

= 0V, V

IN

T

= +25°C

A

OUT

-40C  TA  +85°C T

= +25°C

A

-40C  T

= 5V, I

REV

at VIN SOT25, MSOP-8EP, SO-8 95 115 U-DFN2018-6 90 110

 +85°C

A

Enabled into short circuit, CL = 100µF V

= 5V, V

IN

= 4.5V, CL = 120µF, -40°C  T

OUT

 +85°C

A

Output Current Slew Rate (<100A/s) , CL = 100µF V

= 2.7V to 5.5V

IN

= 2.7V to 5.5V

V

IN

= 5V

V

EN

CL = 1µF, R CL = 1µF, R CL = 1µF, R CL = 1µF, R I

= 10mA, CL = 100µF

FLG

C

= 10µF, CL = 100µF

IN

Enabled, R

LOAD LOAD LOAD LOAD

LOAD

= 10 = 10 = 10 = 10

= 1k

1.6 1.9 2.5 V

0.5 1 A 45 70 µA

1 µA

140 120 140 170

2.0 A

1.6 2.1 2.6 A

2.6 A

0.8 V

2 V

1 µA

0.05 ms

0.6 1.5 ms

0.01 ms

0.05 0.1 ms 20 40 

4 7 15 ms

140

SO-8 (Note 5) 110 MSOP-8EP (Note 6) 60 SOT25 (Note 7) 157 U-DFN2018-6 (Note 8) 70

m

C

C C/W C/W C/W C/W

AP2181/ AP2191

Document number: DS31563 Rev. 7 - 2

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Typical Performance Characteristics

AP2181/ AP2191

Ven 5V/div

Vout 2V/div

V

EN

V

OUT

50%

T

D(ON)

T

10%

R

Turn-On Delay and Rise Time

V

EN

V

OUT

T

50%

D(ON)

90%

50%

T

D(OFF)

90%

10%

T

F

Figure 1 Voltage Waveforms: AP2181 (left), AP2191 (right)

All Enable Plots are for AP2191 Active High

Turn-Off Delay and Fall Time

Ven 5V/div

Vout 2V/div

CL = 1µF TA = +25°C RL = 5

T

10%

50%

T

R

90%

D(OFF)

90%

10%

T

F

CL = 1µF TA = +25°C RL = 5

Turn-On Delay and Rise Time

Ven 5V/div

Vout 2V/div

AP2181/ AP2191

Document number: DS31563 Rev. 7 - 2

400µs/div

Ven 5V/div

Vout 2V/div

CL = 100µF TA = +25°C RL = 5

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400µs/div

Turn-Off Delay and Fall Time

400µs/div

CL = 100µF TA = +25°C RL = 5

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Typical Performance Characteristics (cont.)

Short Circuit Current,

Device Enabled Into Short

AP2181/ AP2191

Inrush Current

Ven 5V/div

Iout 500mA/div

Vflag 2V/div

Iout 1A/div

V

= 5V

IN TA = +25°C CL = 100µF

500µs/div

0.6 Ω Load Connected to Enabled Device

V

IN

TA = +25°C CL = 100µF

= 5V

Ven 5V/div

CL = 470uF

Iout 500mA/div

CL = 100uF

CL = 220uF

1ms/div

Short Circuit with Blanking Time and Recovery

Vout 5V/div

Vflag 5V/div

Iout 2A/div

= 5V

V

IN

T

= +25°C

A

RL = 3.3

V

= 5V

IN TA = +25°C CL = 100µF

Power On

Vflag 5V/div

Iout 500mA/div

Ven 5V/div

Vin 5V/div

AP2181/ AP2191

Document number: DS31563 Rev. 7 - 2

2ms/div

1ms/div

TA = +25°C CL = 68µF RL = 3.3

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Vin 2V/div

Iout 500mA/div

20ms/div

UVLO Increasing

1ms/div

TA = +25°C CL = 68µF RL = 3.3

March 2013