ISL54226 INTERSIL [Intersil Corporation], ISL54226 Datasheet

ISL54226

Manufacturer Part Number

ISL54226

Description

High-Speed USB 2.0 (480Mbps) DPST Switch with Overvoltage Protection (OVP) and Dedicated Charger Port Detection

Manufacturer

INTERSIL [Intersil Corporation]

Datasheet

1.ISL54226.pdf (18 pages)

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High-Speed USB 2.0 (480Mbps) DPST Switch with

Overvoltage Protection (OVP) and Dedicated

Charger Port Detection

ISL54226

The Intersil ISL54226 is a single supply, dual SPST

(Single Pole/Single Throw) switch that is configured as a

DPST. It can operate from a single 2.7V to 5.25V supply.

The part was designed for switching or isolating a USB

high-speed source or a USB high-speed and full-speed

source in portable battery powered products.

The 3.5Ω SPST switches were specifically designed to

pass USB full speed and USB high-speed data signals.

They have high bandwidth and low capacitance to pass

USB high-speed data signals with minimal distortion.

The ISL54226 has OVP detection circuitry on the COM

pins to open the SPST switches when the voltage at

these pins exceeds 3.8V or goes negative by -0.45V. It

isolates fault voltages up to +5.25V or down to -5V from

getting passed to the other side of the switch, thereby

protecting the USB down-stream transceiver.

The OE/ALM logic pin is an open drain input/output that

can be driven to open the switches or monitored to tell

when the part is in an overvoltage state.

The part has an interrupt (INT) output pin to indicate a

1 to 1 (high/high) state on the COM lines to inform the

mode of operation.

The ISL54226 is available in 8 Ld 1.2mmx1.4mm

µTQFN and 8 Ld 2mmx2mm TDFN packages. It operates

over a temperature range of -40 to +85°C.

Typical Application

July 29, 2010

FN7614.0

processor when entering a dedicated charging port

VBUS

D-

D+

GND

500Ω

3.3V

COM -

COM +

ISL54226

VDD

OVP

DET

GND

CONTROL

LOGIC

OE/ALM

4MΩ

INT

D+

1-888-INTERSIL or 1-888-468-3774

D-

3.3V

TRANSCEIVER

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

HIGH-SPEED

100kΩ

USB

µP

Features

• High-Speed (480Mbps) and Full-Speed (12Mbps)

• 1.8V Logic Compatible (2.7V to +3.6V Supply)

• OE/ALM Pin to Open all Switches and Indicate

• Charger Interrupt Indicator Output

• Power OFF Protection

• COM Pins Overvoltage Protection for +5.25V and -5V

• -3dB Frequency . . . . . . . . . . . . . . . . . . . . 790MHz

• Low ON Capacitance @ 240MHz . . . . . . . . . . . . 2pF

• Low ON-Resistance . . . . . . . . . . . . . . . . . . . . 3.5Ω

• Single Supply Operation (V

• Available in µTQFN and TDFN Packages

• Pb-Free (RoHS Compliant)

• Compliant with USB 2.0 Short Circuit and

Applications*

• MP3 and Other Personal Media Players

• Cellular/Mobile Phones, PDA’s

• Digital Cameras and Camcorders

• USB Switching

Switches in the Signal Path

USB 2.0 HS Eye Pattern with

Signaling Capability per USB 2.0

Overvoltage Fault Condition

Fault Voltages

Overvoltage Requirements without Additional

External Components

All other trademarks mentioned are the property of their respective owners.

Intersil (and design) is a registered trademark of Intersil Americas Inc.

TIME SCALE (0.2ns/DIV)

(see page 16)

) . . . . . 2.7V to 5.25V

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