AP2181/AP2191

1.5A SINGLE CHANNEL CURRENT-LIMITED POWER

SWITCH

AP2181/AP2191 Rev. 6

1 of 18

JUNE 2009

DS31563

www.diodes.com

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Single USB port power switches

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Over-current and thermal protection

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2.1A accurate current limiting

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Reverse Current Blocking

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95m

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Input voltage range: 2.7V – 5.5V

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0.6ms typical rise time

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Very low shutdown current: 1uA (max)

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Fault report (FLG) with blanking time (7ms typ)

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ESD protection: 4KV HBM, 300V MM

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Active low (AP2181) or active high (AP2191) enable

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Ambient temperature range: -40°C to 85°C

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SOT25, SOP-8L, MSOP-8L-EP (Exposed Pad), and

DFN2018-6: Available in “Green” Molding Compound

(No Br, Sb)

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Lead Free Finish / RoHS Compliant (Note 1)

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UL Recognized, File Number E322375

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IEC60950-1 CB Scheme Certified

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 SOP-8L, MSOP-8L-EP, SOT25 and

DFN2018-6 packages.

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Consumer electronics – LCD TV & Monitor, Game Machines

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Communications – Set-Top-Box, GPS, Smartphone

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Computing – Laptop, Desktop, Servers, Printers, Docking Station, HUB

0.1uF

IN

GND

EN

OUT

ON

120uF

Power Supply

2.7V to 5.5V

0.1uF

OFF

FLG

Load

10k

10uF

AP2191 Enable Active High

Available Options

Part Number

Channel

Enable pin (EN)

Current limit

(typical)

Recommended maximum

continuous load current

AP2181

1

Active Low

2.1A

1.5A

AP2191

1

Active High

2.1A

1.5A

Features

Description

Applications

Typical Application Circuit