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