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Unitrode UCC3750DW
Non-RoHS Compliant
UCC3750DW_Datesheet
DESCRIPTION
· The UCC3750 Source Ringer Controller offers a comprehensive control and drive solution for a four-quadrant flyback-based ring generator circuit.
· It manages a primary side switch during power transfer and two secondary switches acting as synchronous rectifiers during positive power flow.
· Features an onboard sine wave reference with selectable frequencies of 20Hz, 25Hz, and 50Hz, derived from an external 32kHz crystal.
· Includes programmable DC current limit, charge-pump circuit for gate drive, internal 3V and 7.5V references, and a buffer amplifier for DC offset adjustment.
· Equipped with an uncommitted amplifier for additional signal processing needs.
FEATURES
· Control for flyback-based four-quadrant amplifier topology.
· Onboard sine wave reference with low THD.
· Selectable ringing frequencies suitable for various 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
· Ideal for use in ring generator circuits within telecommunications equipment.
· Suitable for systems requiring precise control of power transfer and rectification.
· Applicable in scenarios needing programmable frequency and amplitude outputs.
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