Lx1692 Protection Pin [exclusive] Site

This is the primary monitoring point. During normal operation, the IC expects current levels to remain within a specific range (typically ). If the voltage at this input falls below

for more than 256 clock counts, the fault latch is set, and the device shuts down.

This pin is used to program the strike time-out function. A capacitor connected here determines how long the controller will attempt to ignite the lamp before concluding there is a fault and entering a latched shutdown. lx1692 protection pin

Detects if a lamp is disconnected or broken.

In the television repair community, technicians often identify a specific pin to bypass or "disable" the protection circuit for diagnostic purposes. This allows them to see if the backlight briefly illuminates, helping to confirm if the issue is a faulty lamp, a damaged transformer, or the IC itself. lx1692 PDF | PDF | Electronic Circuits | Capacitor - Scribd This is the primary monitoring point

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

Protects against electrical arcing within the high-voltage transformer or lamp connectors. This pin is used to program the strike time-out function

A minimum voltage on this pin is required to prevent a "fault stop" during operation. Troubleshooting and Disabling Protection

While "protection pin" is a general term used by repair technicians, the LX1692 datasheet specifically refers to several pins involved in the protection logic: