U211B - Phase Control IC with Overload Limitation

Features

•Internal Frequency-to-voltage Converter
•Externally Controlled Integrated Amplifier
•Overload Limitation with Fold Back” Characteristic
•Optimized Soft-start Function
•Tacho Monitoring for Shorted and Open Loop
•Automatic Retriggering Switchable
•Triggering Pulse Typically 155mA
•Voltage and Current Synchronization
•Internal Supply-voltage Monitoring
•Temperature Reference Source
•Current Requirement -3mA

Description
The integrated circuit Atmel U211B is designed as a phase-control circuit in bipolar
technology with an internal frequency-to-voltage converter.
The device includes an internal control amplifier which means it can be used for speed-regulated motor
applications.
Amongst others, the device features integrated load limitation, tacho monitoring and
soft-start functions, to realize sophisticated motor control systems.