U211B Datasheet PDF - ATMEL

●Description

●The integrated circuit 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.

●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 155 mA

●• Voltage and Current Synchronization

●• Internal Supply-voltage Monitoring

●• Temperature Reference Source

●• Current Requirement ≤ 3 mA