Lx1692 Protection Pin [verified] -

Similar to other backlight controllers like the FAN7314, some technicians use an LED or a 1N4148 diode to clamp the protection voltage.

This ensures that the IC and the system operate within a valid voltage range. If the voltage falls below a certain threshold, the UVP circuit can shut down the IC or prevent it from operating to protect against undervoltage conditions. lx1692 protection pin

PROT pin (LX1692) ---+--- To other LX1692 PROT pins | +--- 10kΩ pull-up to 5V (optional if internal current source is sufficient) | +--- Drain of external N-MOSFET (source to GND) | Gate of N-MOSFET from microcontroller (active high shutdown command) Similar to other backlight controllers like the FAN7314,

The is a critical component of the Microsemi LX1692, a third-generation Direct Drive CCFL (Cold Cathode Fluorescent Lamp) controller. This IC is designed to drive backlight lamps in LCD TVs and monitors using a resonant full-bridge inverter topology, which maximizes efficiency and lamp life. Overview of LX1692 Protection Features PROT pin (LX1692) ---+--- To other LX1692 PROT

The "protection pin" functionality in the LX1692 is distributed across several pins that monitor fault conditions to protect the inverter and transformer. Key Protection Pins and Functions

Limits the transformer secondary voltage to prevent breakdown. Protection Implementation & Timing