DESCRIPTION

The IC is designed to control the speed of DC-motors. In order to determine the motor speed the commutation-related ripple of the motor current is evaluated and converted to a 5V digital signal for the µC. The filtered motor current is also buffered and provided to the µC’s ADC. Many types of motors can be adapted with appropriate filter design.

FEATURES

► Supply voltage range VDD 7V to 16V

► Low standby current typ. 40µA

► Speed regulation using the ripple signal of motor current

► Evaluation of commutation ripple signal

► Fully protected half bridge (slew rate, gate voltage and temperature)

► Overlap free PWM actuation for external power MOS half bridge

► Internal charge pump for 100 actuation

► Adjustable maximum motor voltage

► Conditioning of motor current for external µP and ADC

► Watch dog with emergency function depending on the Kl. 15 signal

► CRASH input for emergency shutoff of pump

► STATUS output for failure analysis

► Over voltage shutdown

► Over temperature shutdown

► – 40°C to + 125°C operating temperature

► SO 24w package

APPLICATION

► Fuel and hydraulic pumps regulator

► Fan regulator

► Speed regulator