Description

The integrated circuit U211B2/ B3 is designed as a phase control circuit in bipolar technology with an internal frequency-voltage converter. Furthermore, it has an internal control amplifier which means it can be used for speed regulated motor applications.It has an integrated load limitation, tacho monitoring and soft-start functions, etc. to realize sophisticated motor control systems.

Features

Internal frequency-to-voltage converter

Externally-controlled integrated amplifier


Overload limitation with a “fold back” characteristic

Optimized soft-start function

Tacho monitoring for shorted and open loop

Automatic retriggering switchable

Triggering pulse typ. 155 mA

Voltage and current synchronization

Internal supply-voltage monitoring

Temperature reference source

Current requirement ≤3 mA