Mp3378e Protection Pin Upd Link

Protects against hardware failures in the boost circuitry. The Role of the OVP Pin in Protection

Sets the LED current; a resistor between this pin and ground programs the brightness.

Limits current to the external MOSFET and internal buck converter. mp3378e protection pin upd

The MP3378E integrates multiple protection modes to safeguard the IC and the LED strings from damage:

26 May 2017 — * MP3378E. * WLED Controller: * Buck Converter: * WLED Controller. VIN1 .............................................. - 0.3V to + Mouser Electronics MP3378E - Monolithic Power Systems Protects against hardware failures in the boost circuitry

Monitored through a specific resistor divider to prevent output voltage from exceeding safe limits.

Enables the IC and controls brightness via pulse-width modulation. mp3378e protection pin upd

Technicians often check the resistor values for the OVP resistor divider to ensure the chip is receiving the correct feedback voltage. Troubleshooting and "Bypassing"

While specific to other ICs like the ACM20005, common technician tricks involve using a diode or resistor to ground a protection pin to see if the backlight stays on. Warning: Bypassing protection on the MP3378E can lead to permanent damage to the IC or the LED panel if the underlying fault (like a short circuit) is not fixed. Pinout Summary (TSSOP-28 EP Package)

Automatically shuts down the chip if internal temperatures reach unsafe levels.