| 摘要 |
A backlight driving device is provided to operate an inverter normally if an LCC state is released and prevent a shut-down state of a controller even when the LCC state is maintained for a predetermined time or more by connecting an LCC protection circuit to a UVLO terminal of the controller. A controller(300) provides a driving signal. An inverter boosts input voltage up to a predetermined level by the driving signal of the controller, and outputs the boosted voltage. A lamp is discharged by the boosted voltage of the inverter. An LCC(Limited Current Circuit) protection circuit switches a voltage level of an UVLO(Under Voltage Lock-Out) terminal of the controller into a "high" or "low" state according to a level of feedback current and feedback voltage of the inverter. |
