Source Ringer Controller
application INFO available
UCC2750 UCC3750
FEATURES • Provides Control for Flyback Based
Four Quadrant Amplifier Topology • Onboard Sine Wave Reference with
Low THD • Selectable Ringing Frequency for
Different Phone Systems (20Hz, 25Hz and 50Hz) • Programmable Output Amplitude and DC Offset • DC Current Limiting for Short Circuit Protection • Secondary Side
Voltage Mode Control • Operates from a Single 5V Supply
TYPICAL APPLICATION
DESCRIPTION
The UCC3750 Source Ringer Controller provides a complete control and drive solution for a four quadrant flyback-based ring generator circuit.
The IC controls a primary side switch, which is modulated when power transfer is ...