Linear led driver and control method thereof

A linear light emitting diode (LED) driver comprising:

• at least one transistor, each of which has an input terminal coupled to a LED and is configured to operably light up or turn off the LED;
• a voltage supply terminal coupled to the LED and configured to operably provide a driving voltage to drive the LED;
• a bleeder circuit coupled to the output terminal of each the at least one first transistor and the voltage regulator, configured to operably generate a bleeder current to discharge the voltage supply terminal so as to prevent the LED from flickering when a voltage of the output terminal of each the at least one first transistor is lower than a first threshold and a power voltage of the linear LED driver being higher than a second threshold.

A control method of a linear light emitting diode (LED) driver including a voltage supply terminal configured to operably providing a driving voltage to drive LEDs, and at least one first transistor, each of which has an input terminal coupled to a respective LED, the control method comprising the steps of:

• providing a power voltage used by the linear LED driver;
• and
• generating a bleeder current to discharge the voltage supply terminal so as to prevent the LEDs from flickering when a voltage of an output terminal of each the at least one first transistor is lower than a first threshold and the power voltage is higher than a second threshold.