DATASHEET ISL54226 FN7614 Rev 2.00 High-Speed USB 2.0 (480Mbps) DPST Switch with Overvoltage Protection (OVP) Aug 15, 2016 and Dedicated Charger Port Detection The ISL54226 is a single supply, dual SPST (Single Pole/Single Features Throw) switch that is configured as a DPST. It can operate from a High-speed (480Mbps) and full-speed (12Mbps) signaling single 2.7V to 5.25V supply. The part was designed for switching capability per USB 2.0 or isolating a USB high-speed source or a USB high-speed and full-speed source in portable battery powered products. 1.8V logic compatible (2.7V to +3.6V supply) The 3.5SPST switches were specifically designed to pass USB OE/ALM pin to open all switches and indicate overvoltage full speed and USB high-speed data signals. They have high fault condition bandwidth and low capacitance to pass USB high-speed data Charger interrupt indicator output signals with minimal distortion. Power OFF protection The ISL54226 has OVP detection circuitry on the COM pins to COM pins overvoltage protection for +5.25V and -5V fault open the SPST switches when the voltage at these pins voltages exceeds 3.8V or goes negative by -0.45V. It isolates fault -3dB frequency . 790MHz voltages up to +5.25V or down to -5V from getting passed to the other side of the switch, thereby protecting the USB down- Low ON capacitance 240MHz . 2pF stream transceiver. Low ON-resistance . 3.5 The OE/ALM logic pin is an open drain input/output that can Single supply operation (V ) . 2.7V to 5.25V DD be driven to open the switches or monitored to tell when the Available in TQFN and TDFN packages part is in an overvoltage state. Pb-Free (RoHS compliant) The part has an interrupt (INT) output pin to indicate a 1 to 1 (high/high) state on the COM lines to inform the processor Compliant with USB 2.0 short circuit and overvoltage when entering a dedicated charging port mode of operation. requirements without additional external components The ISL54226 is available in 8 Ld 1.2mmx1.4mm TQFN and Applications 8 Ld 2mmx2mm TDFN packages. It operates over a MP3 and other personal media players temperature range of -40 to +85C. Cellular/mobile phones, PDAs Digital cameras and camcorders USB switching 3.3V 3.3V 500 100k VDD INT OE/ALM LOGIC P CONTROL VBUS COM - D- D- USB OVP HIGH-SPEED 4M DET TRANSCEIVER D+ D+ COM + ISL54226 GND GND TIME SCALE (0.2ns/DIV) FIGURE 1. TYPICAL APPLICATION FIGURE 2. USB 2.0 HS EYE PATTERN WITH SWITCHES IN THE SIGNAL PATH FN7614 Rev 2.00 Page 1 of 17 Aug 15, 2016 USB CONNECTOR VOLTAGE SCALE (0.1V/DIV)ISL54226 Pin Configurations ISL54226 ISL54226 (8 LD 1.2x1.4 TQFN) (8 LD 2x2 TDFN) TOP VIEW TOP VIEW PD INT 1 8 VDD LOGIC 2 7 OE/ALM D+ OVP 4M COM+ 6 3 D- D- 1 D+ OVP 5 GND 4 COM- LOGIC 4M NOTE: 1. Switches Shown for OE/ALM = Logic 0. Pin Descriptions Truth Table PIN INPUT OUTPUT TQFN TDFN NAME DESCRIPTION SIGNAL AT COM 41 INT Charger Mode Interrupt Output PINS OE/ALM D-, D+ INT OE/ALM STATE 5 2 D+ USB Data Port 0V to 3.6V 0 OFF High Low Normal 63 COM+ USB Data Port 0V to 3.6V 1 ON High High Normal 74 GND Ground Connection Overvoltage 0OFFHigh Low OVP Range 85 COM- USB Data Port Overvoltage 1OFFHigh Low OVP 16 D- USB Data Port Range 2 7 OE/ALM Switch Enable/Alarm (Open Drain) COM Pins Tied 0OFF Low Low Charger Drive Low to Open Switches Together Port (CP) Outputs are Low when OVP is Activated COM Pins Tied 1 ON High High Normal 38 VDD Power Supply Together - PD PD Thermal Pad. Tie to Ground or Float Logic 0 when 0.5V, Logic 1 when 1.4V with a 2.7V to 3.6V Supply. TABLE 1. OVP TRIP POINT VOLTAGE SYSTEM VOLTAGE CONDITIONS TRIP POINT CODEC SUPPLY SWITCH SUPPLY (V ) COMs SHORTED TO PROTECTED MIN MAX DD 2.7V to 3.3V 2.7V to 5.25V VBUS Yes 3.62V 3.95V 2.7V to 3.3V 2.7V to 5.25V -5V Yes -0.6V -0.29V FN7614 Rev 2.00 Page 2 of 17 Aug 15, 2016 NO LONGER AVAILABLE OR SUPPORTED 8 OE/ALM COM - 2 GND VDD 7 3 6 INT 4 COM + 5