Source Ringer Controller

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 taking place from input to output. It also controls two secondary switches which act as synchronous Rectifier switches during positive power flow. These switches are pulse-width-modulated when the power is being delivered back to the source. The UCC3750 has an onboard sine wave reference with programmable frequencies of 20Hz, 25Hz and 50Hz. The reference is derived from a high-frequency (32kHz) crystal connected externally. Two frequency-select pins control an internal divider to give a sinusoidal output at 20Hz, 25Hz or 50Hz. The ring generator CAN also be used at other frequencies by sup-plying externally generated sine-waves to the chip or by clocking the crystal input at a fixed multiple of the desired frequency. Other features included in the UCC3750 are programmable DC current limit (with Buffer amplifier), a charge-pump circuit for Gate drive voltage, internal 3V and 7.5V references, a triangular Clock Oscillator and a Buffer Amplifier for adding programmable DC offset to the output voltage. The UCC3750 also provides an uncommitted Amplifier (AMP) for other signal processing requirements.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
UCC2750DW Texas Instruments Source Ringer Controller 28-SOIC -40 to 85
UCC2750DWG4 Texas Instruments SPECIALTY TELECOM CIRCUIT, PDSO28, GREEN, PLASTIC, SOIC-28
UCC2750DWTRG4 Texas Instruments SPECIALTY TELECOM CIRCUIT, PDSO28, GREEN, PLASTIC, SOIC-28
UCC2750 's PackagesUCC2750 's pdf datasheet
UCC2750DW SOIC
UCC2750DWG4 SOIC
UCC2750DWTR SOIC
UCC2750DWTRG4 SOIC




UCC2750 Pinout, Pinouts
UCC2750 pinout,Pin out
This is one package pinout of UCC2750,If you need more pinouts please download UCC2750's pdf datasheet.

UCC2750 Application circuits
UCC2750 circuits
This is one application circuit of UCC2750,If you need more circuits,please download UCC2750's pdf datasheet.


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UCC2750 Application Notes UCC2750 RoHS UCC2750 Circuits UCC2750 footprint