Lx1692 Protection Pin

This pin is critical for Open-Lamp Voltage Protection . It monitors the transformer's secondary voltage through a resistor divider to prevent it from exceeding safe limits during striking or if a lamp fails.

Prevents high current from damaging the MOSFETs. lx1692 protection pin

When the output voltage falls within a predetermined range (usually 85% to 90% of the nominal output voltage), the LX1692 considers the output voltage to be within a valid operating range, and the protection pin is asserted (typically pulled high or low, depending on the specific implementation). This pin is critical for Open-Lamp Voltage Protection

The LX1692 protection pin is a critical feature of the PMIC that provides an additional layer of protection against various types of faults and abnormal operating conditions. The protection pin is designed to detect and respond to faults such as overvoltage, undervoltage, overcurrent, and short circuits. When a fault is detected, the protection pin can trigger a shutdown or alert the system to take corrective action. When the output voltage falls within a predetermined

) from the timer pin to ground, or by applying a stable reference voltage to the comparator pin.

Shuts down the system if a short is detected in the lamp or secondary transformer winding.

Unlike simple logic inputs that expect a rigid 0V or 5V, the Protection Pin is designed as a . It usually sits at a specific reference voltage (often tied to an internal reference or VDD) during normal operation. The genius lies in how it interacts with external components. It is not just listening; it is waiting for a signal to pull it down.