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