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Load switch raises HDMI port protection

Load switch raises HDMI port protection

Fully compliant with the HDMI standard, the AP2331 single channel current limited load switch from Diodes has been optimised for HDMI and monitor port protection duties, 3 to 5V hot swap interconnects and other applications subject to heavy capacitive loads and the prospect of short circuit.

Designed for a range of consumer electronics products, including set top boxes, laptops and lcd tvs, the 0.2A rated, SOT23 packaged load switch helps improve system robustness with its fast and accurate over current, over voltage, reverse current, thermal and short circuit protection features as well as controlled turn on time and under voltage lockout functionality.

By including a built in soft start capability, delivering a 0.7ms typical turn on time, the AP2331 is designed to increase system reliability by reducing inrush currents to a safe level. Its output discharge function is said to ensure a controlled discharge of the output voltage stored on the output capacitor when disabled.

According to Diodes, the load switch's 0.4A current limiting tolerance means power rail current requirements can be reduced along with overall system cost. Device on resistance is 250mO and system robustness is further enhanced by the AP2331's reverse current blocking capability, which is designed to avoid any current leakage from output to input, and esd protection performance rated at 3KV in HBM and 300V in MM tests.


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