DATASHEET
ISL54227
High-Speed USB 2.0 (480Mbps) DPST Switch with Overvoltage Protection (OVP)
and Dedicated Charger Port Detection
The Intersil ISL54227 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. Features The 3.5пЃ—пЂ 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 device has two logic control
input pins (OE and LP) to control the SPST switches. Charger interrupt indicator output The ISL54227 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. It has an alarm indicator output pin (ALM)
to indicate when the part is in the overvoltage condition.
The part has an interrupt (INT) output pin to indicate a 1-to-1
(high/high) state on the COM lines to inform the Вµprocessor
when entering a dedicated charging port mode of operation.
The ISL54227 is available in 10 Ld 1.8mmx1.4mm ВµTQFN and …