Description
The tone ringer interface with dc/dc converter U4078B is an integrated circuit realized in bipolar technology, which allows high efficient power transfer. Galvanic separation takes place at Pin 5 either with inductive or opto-coupler mode.

Features
● Suitable for the specification: FTZ, 1TR2 and ETR2
● Rectifier bridge
● Z-diode
● Amplitude detection
● Detection of ringing signal i.e., sine-, triangle-, or rectangular (tone ringing) signal
● High-voltage bipolar technology
● Compact surface mount package (SO8)

Benefits
● High efficient power transfer