MLX90804

· Low cost - minimal external components
· In PDIL8, PSOP8 or Chip-on-board
· 50/60Hz operation
· Robust digital design:
· Offering stable triac control
· Eliminating variations due to changes in analogue parameters
· No aging and temperature influences
· True PI speed regulator
· No external calibration or adjustment required
· Low power consumption
· Suited for driving resistive and inductive loads
· Pulse input to measure the motor speed with a low cost coil or a hall sensor
· Motor current sensing for power limitation
· Adaptable to specific motor and application requirements by mask programming

Universal motor control applications that require true speed regulation, such as used in blenders, mixers, kitchen appliances, drills, etc

The MLX90804 is a power control IC for controlling the speed of AC motors by means of a triac. The speed setting is done by applying a ratiometric voltage at pin SET (usually by means of a potentiometer). This speed setting is compared with the pulse rate at the SPD input. The input of MLX90804 is compatible with inductive and magnetic detectors.

The calculation of the required phase angle of MLX90804 is done with a PI regulator, which is fully digital.

A soft start function of MLX90804 is implemented to eliminate high current peaks at startup. Also available are an overload and overspeed protection.

The build in Frequency Locked Loop MLX90804 compensates for variations in the mains frequency giving a stable frequency independent trigger control.

Several parameters of MLX90804 can be adjusted by mask programming: minimum and maximum speed, soft start delay, gain settings of the PI regulator, .