High-Speed USB 2.0 (480Mbps) DPST Switch with Overvoltage Protection (OVP) and Dedicated Charger Port Detection
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Overview
Description
The ISL54226 is a single supply, dual Single Pole/Single Throw (SPST) 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 downstream 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 microprocessor when entering a dedicated charging port mode of operation. The ISL54226 is available in 8 Ld 1.2mm x 1.4mm µTQFN and 8 Ld 2mm x 2mm TDFN packages. It operates over a temperature range of -40 °C to +85 °C.
Features
- High-speed (480Mbps) and full-speed (12Mbps) signaling capability per USB 2.0
- 1.8V logic compatible (2.7V to +3.6V supply)
- OE/ALM pin to open all switches and indicate overvoltage fault condition
- Charger interrupt indicator output
- Power OFF protection
- COM pins overvoltage protection for +5.25V and -5V fault voltages
- -3dB frequency: 790MHz
- Low ON capacitance at 240MHz: 2pF
- Low ON-resistance: 3.5Ω
- Single supply operation (VDD): 2.7V to 5.25V
- Available in µTQFN and TDFN packages
- Pb-free (RoHS compliant)
- Compliant with USB 2.0 short circuit and overvoltage requirements without additional external components
Applications
Applications
- MP3 and other personal media players
- Cellular/mobile phones
- PDAs
- Digital cameras and camcorders
- USB switching
Design & Development
Software & Tools
Boards & Kits
Boards & Kits
High-Speed USB 2.0 (480Mbps) Multiplexer or Switch Evaluation Board
The ISL54226IRTZEVAL1Z evaluation board is used to evaluate the ISL54226 Double Pole/Single Throw (DPST) switch.
The ISL54226IRTZEVAL1Z board includes USB...
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Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Product Options
Processing table
ISL54226IRTZ-T Active Samples Available |
TDFN | Reel | 6000 | Get Samples, |
ISL54226IRTZ-T7A Active Samples Available |
TDFN | Reel | 250 | Get Samples, |
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