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November 2011

Rev. 2.1.0

Exar Corporation

www.exar.com

48720 Kato Road, Fremont CA 94538, USA

Tel. +1 510 668-7000 – Fax. +1 510 668-7001

GENERAL DESCRIPTION

The SP2525A device is an integrated high-side

power switch ideal for self-powered and bus-

powered

Universal

Serial

Bus

(USB)

applications.

The high-side switches are MOSFETs with

requirements for maximum transmission wire

length. Multi-purpose open-drain fault flag

output indicates over-current limiting, thermal

shutdown, or under voltage lockout. Output

current is typically limited to 0.85A below the

5A safety requirement, and the thermal

shutdown function shuts the switch off to

prevent damage under overcurrent conditions.

Guaranteed minimum output rise time limits

inrush current during hot plug-in, minimizing

EMI and preventing the voltage at the

upstream port from dropping excessively.

The SP2525A is offered in a RoHS compliant

“green”/halogen free 8-pin NSOIC package.

APPLICATIONS

 Self Powered USB 2.0 and 3.0 Hubs

 Audio-Video Equipments

 Generic Power Switching

FEATURES

 +3.0V to +5.5V Input Voltage Range

 500mA Continuous Load Current

per Channel

 2.6V Undervoltage Lockout

 1.25A Short Circuit Current Limit

 100mΩ Maximum On-Resistance

 75μA On-State Supply Current

 1μA Shutdown Current

 Output can be Forced Higher than

Input (Off-State)

 Thermal Shutdown

 Slow Turn On and Fast Turn Off

 Active-high Version: SP2525A-1

 Active-low Version: SP2525A-2

 RoHS Compliant, Green/Halogen Free

8-Pin NSOIC Package

TYPICAL APPLICATION DIAGRAM

Fig. 1: SP2525A Application Diagram – Single Port Self Powered Hub