Load switch delivers HDMI port protection
Designed for a wide range of consumer electronics products, including set-top boxes, laptops and LCD TVs, this 0.2 A 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 0.7 ms typical turn-on time, the AP2331 increases system reliability by reducing inrush currents to a safe level, while its output discharge function ensures a controlled discharge of the output voltage stored on the output capacitor when disabled.
The load switch’s very tight 0.4 A current-limiting tolerance means power rail current requirements can be reduced along with overall system cost. Device on-resistance is also low at 250 mΩ, helping to minimize circuit voltage drop. System robustness is further enhanced by the AP2331’s reverse-current blocking capability, which avoids any current leakage from output to input, and ESD protection performance rated at 3 kV in HBM and 300 V in MM tests.
The AP2331 load switch is priced at $0.05 USD each in quantities of 1000.
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