AP2145/AP2155

0.5A SINGLE CHANNEL CURRENT-LIMITED POWER

SWITCH WITH OUTPUT DISCHARGE

AP2145/AP2155

Document number: DS32031 Rev. 2 - 2

1 of 13

www.diodes.com

September 2010

© Diodes Incorporated

Description

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 SO-8 and MSOP-8EP packages.

Features

•

Single USB port power switches

•

Over-current and thermal protection

•

0.8A accurate current limiting

•

Reverse Current Blocking

•

90m

Ω on-resistance

•

Input voltage range: 2.7V – 5.5V

•

0.6ms typical rise time

•

Very low shutdown current: 1uA (max)

•

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

•

ESD protection: 6KV HBM, 400V MM

•

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

•

Ambient temperature range -40ºC to 85°C

•

SO-8 and MSOP-8EP (Exposed Pad): Available in

“Green” Molding Compound (No Br, Sb)

•

Lead Free Finish/ RoHS Compliant (Note 1)

•

UL Recognized, File Number E322375

•

IEC60950-1 CB Scheme Certified

Pin Assignments

SO-8

1

2

3

4

8

7

6

5

OUT

IN

NC

OUT

EN

NC

GND

FLG

(Top View)

MSOP-8EP

1

2

3

4

8

7

6

5

OUT

IN

NC

OUT

EN

NC

GND

FLG

(Top View)

Applications

•

Consumer electronics – LCD TV & Monitor, Game Machines

•

Communications – Set-Top-Box, GPS, Smartphone

•

Computing – Laptop, Desktop, Servers, Printers, Docking

Station, HUB

Notes:

1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at

http://www.diodes.com/products/lead_free.html.

Typical Application Circuit

0.1uF

IN

GND

EN

OUT

ON

120uF

Power Supply

2.7V to 5.5V

0.1uF

OFF

FLG

Load

10k

10uF

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