SP2526 Ver la hoja de datos (PDF) - Signal Processing Technologies

Número de pieza

componentes Descripción

Fabricante

SP2526

+3.0V to +5.5V USB Power Control Switch

Signal Processing Technologies 

ENA 1

FLGA 2

FLGB 3

ENB 4

SP2526

8 OUTA

7 IN

6 GND

5 OUTB

VIN

0.1µF to 1.0µF

USB

Controller

OVERCURRENT

VIN

0.1µF

10kΩ

10kΩ

ENA 1

FLGA 2

FLGB 3

ENB 4

SP2526

8 OUTA

7 IN

6 GND

5 OUTB

Figure 4. Bypass Capacitor at the Supply Pins

Figure 5. An RC Filter for Overcurrent Faults

USB Requirement

SP2526 Compliant Feature

Inrush current limiting required

Soft start turns on in 1ms

Suspend State of <500µA Required

Suspend Current of 1µA maximum

Bus powered hubs must have 350mV maximum

drop from cable plug to port

Switch on resistance of 140mΩ maximum

(translates to 70mV at 500mA)

Voltage supplied to host or hub port is +4.75V to +5.25V Operating range of +3.0V to +5.5V

A device that draws bus power must have a stable

supply within 100ms of VBUS reaching +4.4V

Over-current reporting capability required

Turns on in 1ms

Open drain fault flags

Table 1. USB Protocol Compliance of the SP2526 device

Rev. 8/21/01

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

9

© Copyright 2001 Sipex Corporation

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