AP2145/AP2155

0.5A SINGLE CHANNEL CURRENT-LIMITED POWER

SWITCH

AP2145/AP2155 Rev. 1

1 of 14

DECEMBER 2009

www.diodes.com

•

Single USB port power switches

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Over-current and thermal protection

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0.8A accurate current limiting

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Reverse Current Blocking

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90m

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Input voltage range: 2.7V – 5.5V

•

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: 6KV HBM, 400V MM

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Active high (AP2155) or active low (AP2145) enable

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Ambient temperature range -40ºC to 85°C

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SOP-8L and MSOP-8L-EP (Exposed Pad): 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 (pending)

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IEC60950-1 CB Scheme Certified

The AP2145 and AP2155 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 and MSOP-8L-EP 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

AP2155 Enable Active High

Available Options

Part Number

Channel

Enable pin (EN)

Current limit

(typical)

Recommended maximum

continuous load current

AP2145

1

Active Low

0.8A

0.5A

AP2155

1

Active High

0.8A

0.5A

Features

Description

Applications

Typical Application Circuit