1

Rev. 8/21/01

SP2526 +3.0V to +5.5V USB Power Control Switch

© Copyright 2001 Sipex Corporation

s Compliant to USB Specifications

s +3.0V to +5.5V Input Voltage Range

s Two Independent Power Switches

s Two Error Flag Outputs, Open Drain

s 2.7V Undervoltage Lockout

s 500mA Minimum Continuous Load

Current Per Switch

s 1.25A Short Circuit Current Limit

s 140m

Ω Maximum On-Resistance

SP2526

DESCRIPTION

The SP2526 device is a dual +3.0V to +5.5V USB Supervisory Power Control Switch ideal for

self-powered and bus-powered Universal Serial Bus (USB) applications. Each switch has low

on-resistance (80m

Ω typical) and can supply 500mA minimum. The fault currents are limited

to 2.0A typical and the flag output pin for each switch is available to indicate fault conditions

to the USB controller. The 1ms soft start will eliminate any momentary voltage droop on the

upstream port that may occur when the switch is enabled in bus-powered applications. The

thermal shutdown feature will prevent damage to the device when subjected to excessive

current loads. The undervoltage lockout feature will ensure that the device will remain off

unless there is a valid input voltage present.

ENA

GND

OUTA

FLGA

FLGB

OUTB

IN

ENB

SP2526

8

7

4

3

2

1

5

6

+3.0V to +5.5V USB Power Control Switch

®

s 80

µA On-State Supply Current

s 1

µA Shutdown Current

s Output Can Be Forced Higher Than

Input (Off-State)

s Thermal Shutdown

s 1ms Soft-Start Power Up

s Active-High Version: SP2526-1

s Active-Low Version: SP2526-2