AN44142A

DReovcisNioon. . T2A4-EA-06255 Product Standards AN44142A Driver IC for 3-phase Brushless Motor FEATURES  Supply voltage range: 4.5 V ~ 26.4 V  Built-in 5-V regulator  3-phase full-wave sine-wave PWM drive by 1-Hall-sensor  Selectable Input Mode: Either linear voltage input or PWM input through VSP pin  Controllable lower limit for linear voltage input mode through VSPL pin  Conduction angle auto driver phase shift correction  Rotation direction selectable (Forward/Reverse)  FG pulse divide selectable  Sleep mode  Various protection functions: Under Voltage Lock Out (UVLO), Over Voltage Lock Out (OVLO), Thermal protection, Over Load Protection, and Over Current Protection DESCRIPTION  AN44142A is a driver IC for 3-phase brushless motor optimized for fan motors. By employing the rotor position detector and sine wave PWM drive by 1-Hall-sensor, this IC achieves component reduction and miniaturization of motor set as well as motor drive at low noise, lo...