Light-emitting element driving circuit and light-emitting element driving chip

Abstract

The present application discloses a light-emitting element driving circuit and a light-emitting element driving chip. The light-emitting element driving circuit includes a driving power supply stage and an impedance-adjustable module arranged on a branch where a light-emitting element is located, and an impedance adjusting branch connected in parallel with the driving power supply stage, wherein an adjustment output terminal of the impedance adjusting branch is coupled to the impedance-adjustable module; and the impedance adjusting branch is configured to adjust an impedance of the impedance-adjustable module according to voltages on both sides of the driving power supply stage. The light-emitting element driving circuit provided by the present application can improve a voltage drop at the driving power supply stage, balance the power consumption and heat generation of the driving circuit itself, and enhance the driving ability of the circuit.

Dependencies are inferred from the claim text.