LED DRIVER APPARATUS

A LED driving apparatus includes: an output transistor, having a drain coupled to the LED; a node, coupled to a source of the output transistor; a ground transistor, having a drain coupled to the node, and a source coupled to the ground; an operational amplifier, including: a first input end and a second input end, for respectively receiving a driving signal and a feedback signal; and an output end, for outputting an output signal to a gate of the output transistor; a compensating capacitor, including a first end and a second end; and a switching unit, for switching between a first connection mode and a second connection mode, so as to offset a bias difference to the node for compensating the bias difference of the operational amplifier.