AP2151A

Document number: DS37615 Rev. 2 - 2

1 of 18

www.diodes.com

January 2018

© Diodes Incorporated

AP2151A

0.5A SINGLE CHANNEL CURRENT-LIMITED POWER SWITCH

Description

The AP2151A is an 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 is available with active

high 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.

AP2151A is available in SO-8, MSOP-8EP, SOT25 and U-DFN2018-

6 packages.

Features



Single USB Port Power Switches



Over-Current and Thermal Protection



0.8A Accurate Current Limiting



Reverse Current Blocking



95m

Ω On-Resistance



Input Voltage Range: 2.7V to 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, 400V MM



Active High 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 Fre

e. “Green” Device (Note 3)



15kV ESD Protection per IEC 61000-4-2 (With External

Capacitance)



UL Recognized, File Number E322375



IEC60950-1 CB Scheme Certified

Applications



Consumer Electronics

– LCD TVs & Monitors, Game Machines



Communications

– Set-Top-Boxes, GPS Systems, Smartphones



Computing

– Laptops, Desktops, Servers, Printers, Docking

Stations, HUBs

Pin Assignments

(Top View)

1

2

3

4

8

7

6

5

NC

OUT

FLG

OUT

GND

EN

IN

IN

SO-8

(Top View)

MSOP-8EP

(Top View)

SOT25

(Top View)

U-DFN2018-6

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.

2. See https://www.diodes.com/quality/lead-free/ 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.

FLG

EN

GND

OUT

OUT

IN

1

3

2

4

5

6

1

2

3

4

8

7

6

5

NC

OUT

FLG

OUT

GND

EN

IN

IN

EN

OUT

GND

IN

FLG

1

2

3

5

4