Abstract: A low dropout regulator with wide input supply voltage includes a controller, an comparing circuit, a feedback circuit, an adjustable source follower, and an adjustable driving circuit. The controller is used for detecting a supply voltage. The feedback circuit, the comparing circuit, the adjustable source follower, and the adjustable driving circuit are used for regulating an output voltage according to a reference voltage. When the adjustable source follower and the adjustable driving circuit operate in the low-voltage mode, the controller further activates a first parallel metal-oxide-semiconductor transistor in the adjustable source follower and a second parallel metal-oxide-semiconductor transistor in the adjustable driving circuit.

Abstract: A low dropout regulator with wide input supply voltage includes a controller, an comparing circuit, a feedback circuit, an adjustable source follower, and an adjustable driving circuit. The controller is used for detecting a supply voltage. The feedback circuit, the comparing circuit, the adjustable source follower, and the adjustable driving circuit are used for regulating an output voltage according to a reference voltage. When the adjustable source follower and the adjustable driving circuit operate in the low-voltage mode, the controller further activates a first parallel metal-oxide-semiconductor transistor in the adjustable source follower and a second parallel metal-oxide-semiconductor transistor in the adjustable driving circuit.

Abstract: A driving device with correction function is provided herein and utilizes a sensing resistor to detect the variation in an operation amplifier. A signal generated by an offset voltage correction circuit is fed back to the operation amplifier and the offset voltage of the abnormal input in the operation amplifier is corrected to be zero so as to keep the operation amplifier under the best performance condition. The driving device implements in the wireless charger driving system can enhance the accuracy of the current value and can achieve good output performance and better system stability.

Abstract: A driving device with correction function is provided herein and utilizes a sensing resistor to detect the variation in an operation amplifier. A signal generated by an offset voltage correction circuit is fed back to the operation amplifier and the offset voltage of the abnormal input in the operation amplifier is corrected to be zero so as to keep the operation amplifier under the best performance condition. The driving device implements in the wireless charger driving system can enhance the accuracy of the current value and can achieve good output performance and better system stability.

Abstract: A motor driver IC with auto calibration function is provided, the motor driver IC utilizes a Hall sensor of a switched sensor circuit to detect the changes in an external magnetic field. By using the compensation current which is generated by the automatic calibration circuit to correct the unexpected offset existed in the Hall sensor of the sensing unit itself to zero so that the sensing unit can sense the changes in the external magnetic field accurately and can point out the rotor position correctly, and the motor can be further driven to commutate relatively to reduce the motor rotation noise to achieve good output performance of the motor rotation and the better motor driving system stability.

Abstract: A motor driver IC with auto calibration function is provided, the motor driver IC utilizes a Hall sensor of a switched sensor circuit to detect the changes in an external magnetic field. By using the compensation current which is generated by the automatic calibration circuit to correct the unexpected offset existed in the Hall sensor of the sensing unit itself to zero so that the sensing unit can sense the changes in the external magnetic field accurately and can point out the rotor position correctly, and the motor can be further driven to commutate relatively to reduce the motor rotation noise to achieve good output performance of the motor rotation and the better motor driving system stability.