Enables the IC and controls brightness via pulse-width modulation.
Monitored through a specific resistor divider to prevent output voltage from exceeding safe limits. mp3378e protection pin upd
Limits current to the external MOSFET and internal buck converter. Enables the IC and controls brightness via pulse-width
Open-string protection is achieved by monitoring the voltage on the OVP pin. If an LED string fails, the controller may boost output voltage excessively; if it hits the programmed OVP threshold, the chip shuts down to prevent damage. Open-string protection is achieved by monitoring the voltage
Technicians often check the resistor values for the OVP resistor divider to ensure the chip is receiving the correct feedback voltage. Troubleshooting and "Bypassing"
26 May 2017 — * MP3378E. * WLED Controller: * Buck Converter: * WLED Controller. VIN1 .............................................. - 0.3V to + Mouser Electronics MP3378E - Monolithic Power Systems