Patent ID: 9451661
Filing Date: 2016-09-20
CPC Classification: H05B

Claim Text:
1. A linear light emitting diode (LED) driver, comprising: at least one first 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 voltage regulator coupled to the voltage supply terminal and configured to operably convert the driving voltage into a power voltage used by the linear LED driver; and 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 via the voltage regulator 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 the power voltage is higher than a second threshold.