Upd - Mp3378e Protection Pin

The Go to product viewer dialog for this item. is a 4-channel WLED controller and high-efficiency buck converter primarily used for LCD backlight applications. While it does not feature a single pin explicitly labeled "Protection," its safety functions are distributed across several dedicated pins: Key Protection Pins and Functions

MP3378 Protection Pin Functions and Configuration

Overview

The MP3378 is a boost controller designed to drive up to 8 parallel strings of white LEDs. To ensure system reliability and protect both the driver IC and the LED load, the device incorporates several protection mechanisms. These protections are primarily configured and monitored through specific pins: OVP (Over-Voltage Protection), PROG/OC (Current Setting/Protection), and the LEDx (String Fault) pins.

When an LED fails in the middle of a movie, and the screen dims slightly but does not turn off, they are witnessing the work of this updated protection logic. When a vehicle’s dashboard survives a voltage spike from a starter motor, it is this pin that held its ground. mp3378e protection pin upd

The MP3378E integrates several protection modes for both the WLED controller and the buck converter: MPS | Monolithic Power Systems Controller Part Integrated Protections WLED Controller

Overview of the MP3378E

is a robust, single-chip solution designed primarily for monitor applications. It combines a 4-channel step-up WLED controller with a high-efficiency buck converter, but its complex protection suite can often lead to "shutdown" states that frustrate technicians during repairs. The Multi-Layered Protection System

The OVP pin (Pin 10 in the TSSOP-28 EP package) monitors the boost output voltage through an external resistor divider. It performs several safety-critical tasks: The Go to product viewer dialog for this item

2. PROT Pin Dual Functionality