DESCRIPTION

· The UCC3750 is a Source Ringer Controller designed for a four-quadrant flyback-based ring generator circuit.
· It controls a primary side switch and two secondary synchronous rectifier switches.
· Features an onboard sine wave reference with selectable frequencies of 20Hz, 25Hz, and 50Hz.
· Includes a programmable DC current limit, charge-pump circuit, internal voltage references, and a buffer amplifier.
· Offers an uncommitted amplifier for additional signal processing needs.

FEATURES

· Controls a flyback-based four-quadrant amplifier topology.
· Onboard sine wave reference with low THD.
· Selectable ringing frequencies for different phone systems (20Hz, 25Hz, 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.

APPLICATIONS

· Suitable for ring generator circuits in telecommunication systems.
· Can be used in various phone systems requiring different ringing frequencies.
· Ideal for applications needing programmable output amplitude and DC offset.
· Useful in systems requiring DC current limiting for protection.