The present disclosure provides a lead angle controller including: a position sensor configured to detect a position of a rotor of a BLDC motor; a lead angle control unit configured to determine a lead angle based on a detection signal and to output time for compensation of the lead angle as a lead angle control signal; a phase current converter configured to output a phase current conversion signal based on the detection signal and the lead angle control signal, wherein the phase current conversion signal determines a phase current step of a stator of the BLDC motor; and a signal holder configured to, when one detection signal from the position sensor and the lead angle control signal is changed, hold the detection signal and the lead angle control signal and provide the detection signaland the lead angle control signal to the phase current converter at a predetermined time.