Diodes AP2161, AP2171 User Manual

AP2161/ AP2171

1A SINGLE CHANNEL CURRENT-LIMITED POWER SWITCH

Description

The AP2161 and AP2171 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
 1.5A 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 (AP2161) or Active High (AP2171) 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.

AP2161/ AP2171

Document number: DS31564 Rev. 7 - 2

www.diodes.com

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U-DFN2018-6

March 2013

© Diodes Incorporated

AP2161/ AP2171

Typical Applications Circuit

AP2171 Enable Active High

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)

AP2161 1 Active Low 1.5A 1.0A
AP2171 1 Active High 1.5A 1.0A

Current Limit

(typ)

Recommended Maximum Continuous

Load Current

Pin Descriptions

Pin

Name

GND 1 1 2 1 Ground

IN

EN 4 4 4 3 Enable input, active low (AP2161) or active high (AP2171)

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

AP2161/ AP2171

Document number: DS31564 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 u s e d as elec t r i cal g r o u nd co n d ucti o n p a t h.

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Functional Block Diagram

AP2161/ AP2171

AP2161, AP2171

IN

UVLO

EN

Driver

Thermal

Sense

Current

Sense

Current

Limit

Deglitch

GND

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 1.0 A
Operating Ambient Temperature -40 +85

2.0

VIN

C

0 0.8 V

V

AP2161/ AP2171

Document number: DS31564 Rev. 7 - 2

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© Diodes Incorporated

AP2161/ AP2171

Electrical Characteristics (@T

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

A

Symbol Parameter Test Conditions Min Typ Max Unit

V

UVLO

I

SHDN

I

LEAK

I

REV

R

DS(ON)

I

SHORT

I

LIMIT

I

I

SINK

t

D(ON)

t

D(OFF)

Input UVLO
Input Shutdown Current
Input Quiescent Current

I

Q

R

= 1k

LOAD

Disabled, I
Enabled, I

OUT

OUT

= 0

= 0
Input Leakage Current Disabled, OUT grounded 1 µA
Reverse Leakage Current

Switch on-resistance

Short-Circuit Current Limit
Over-Load Current Limit
Current limiting trigger threshold

Trig

EN Input leakage
Output turn-on delay time
Output turn-on rise time

tR

Output turn-off delay time
Output turn-off fall time

tF

Disabled, V
V

= 5V,

IN

I

= 1A

OUT

VIN = 3.3V,

= 1A

I

OUT

= 0V, V

IN

T

= +25°C

A

OUT

-40°C  TA  +85°C
T

= +25°C

A

-40°C  TA  +85°C

= 5V, I

REV

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

Enabled into short circuit, CL = 68µF
V

= 5V, V

IN

= 4.6V, CL = 68µF, -40°C  TA  +85°C

OUT

Output Current Slew rate (<100A/s) , CL=68µF
V

= 5V

EN

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

LOAD
LOAD
LOAD
LOAD

= 10
= 10
= 10
= 10

1.6 1.9 2.5 V

0.5 1 A
45 70 µA

1 µA

140

m

120 140
170

1.2 A

1.1 1.5 1.9 A

2.0 A
1 µA

0.05 ms

0.6 1.5 ms

0.01 ms

0.05 0.1 ms

Fault Flag

R
t

Blank

FLG output FET on-resistance

FLG

FLG blanking time

I

= 10mA

FLG

C

= 10µF, CL = 68µF

IN

20 40 

4 7 15 ms

Over-Temperature Protection

T

SHDN

T

Thermal Shutdown Threshold
Thermal Shutdown Hysteresis 25

HYS

Enabled, R

LOAD

= 1k

140

C
C

SO-8 (Note 5) 110 °C/W

Thermal Resistance Junction-to-



JA

Ambient

MSOP-8EP (Note 6) 60 °C/W
SOT25 (Note 7) 157 °C/W
U-DFN2018-6 (Note 8) 70 °C/W

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.

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

layer 1.0”x1.4” ground plane.

AP2161/ AP2171

Document number: DS31564 Rev. 7 - 2

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Typical Performance Characteristics

AP2161/ AP2171

Ven
5V/div

Vout
2V/div

V

EN

V

OUT

50%

T

D(ON)

T

10%

50%

T

R

90%

D(OFF)

90%

10%

T

F

V

EN

50%

T

T

D(ON)

V

OUT

10%

50%

T

R

90%

D(OFF)

90%

10%

T

F

Figure 1 Voltage Waveforms: AP2161 (left), AP2171 (right)

All Enable Plots are for AP2171 Active High

Turn-On Delay and Rise Time

500µs/div

CL = 1µF
TA = +25°C
RL = 10

Ven
5V/div

Vout
2V/div

Turn-Off Delay and Fall Time

CL = 1µF
TA = +25°C
RL = 10

500µs/div

Turn-On Delay and Rise Time

Ven
5V/div

Vout
2V/div

AP2161/ AP2171

Document number: DS31564 Rev. 7 - 2

500µs/div

Ven
5V/div

Vout
2V/div

CL = 100µF
TA = +25°C
RL = 10

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Turn-Off Delay and Fall Time

500µs/div

CL = 100µF
TA = +25°C
RL = 10

March 2013

© Diodes Incorporated

Typical Performance Characteristics (cont.)

Short Circuit Current,

Device Enabled Into Short

AP2161/ AP2171

Inrush Current

Ven
5V/div

Iout
500mA/div

Vflag
2V/div

Iout
1A/div

V

IN

TA = +25°C
CL = 68µF

500µs/div

1 Ω Load Connected to Enabled Device

= 5V

V

IN
TA = +25°C
CL = 68µF

= 5V

Ven
5V/div

Iout
200mA/div

=100µF

C

L

C

=220µF

L

CL=470µF

V

= 5V

IN

TA = +25°C
RL = 5

1ms/div

2Ω Load Connected to Enabled Device

V

= 5V

IN

Vflag
2V/div

Iout
1A/div

TA = +25°C

=

Short Circuit with Blanking Time and Recovery

Vout
5V/div

Vflag
5V/div

Iout
1A/div

AP2161/ AP2171

Document number: DS31564 Rev. 7 - 2

2ms/div

20ms/div

V

= 5V

IN

TA = +25°C
CL = 68µF

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Vflag
5V/div

Iout
500mA/di
v

Ven
5V/div

Vin
5V/div

2ms/div

Power On

1ms/div

TA = +25°C
CL = 68µF
RL = 5

March 2013

© Diodes Incorporated