The UCC3813-x device family of high-speed, low-power integrated circuits contains all of the control and drive components required for off-line and DC-to-DC fixed-frequency current-mode switching power supplies with minimal parts count.
These devices have the same pin configuration as the UC384x device family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.
The UCC3813-x device family offers a variety of package options, temperature-range options, choice of maximum duty cycle, and choice of critical voltage levels. Devices with lower reference voltage such as the UCC3813-3 and UCC3813-5 fit best into battery operated systems, while the higher reference and the higher UVLO hysteresis of the UCC3813-2 device and UCC3813-4 device make these ideal choices for use in off-line power supplies.
The UCC2813-x device series is specified for operation from –40°C to 85°C and the UCC3813-x device series is specified for operation from 0°C to 70°C.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | UCCx813-x Low-Power Economy BiCMOS Current-Mode PWM datasheet (Rev. F) | PDF | HTML | 12 May 2020 |
| Application note | Conditioning a Switch-mode Power Supply Current Signal Using TI Op Amps (Rev. A) | PDF | HTML | 11 Jun 2021 | |
| Application note | Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B) | 12 Mar 2019 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 25 Jun 2018 | ||
| Application note | UCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers | 07 Feb 2002 | ||
| Application note | Differences Between the UCC3813 and the UCC3800 PWM Families | 02 Jun 2000 | ||
| Application note | DN-42A Design Considerations for Transitioning from UC3842 to the New UCC3802 | 05 Sep 1999 | ||
| Application note | DN-62 Switching Power Supply Topology Voltage Mode vs. Current Mode | 05 Sep 1999 | ||
| Application note | U-111, Practical Considerations in Current Mode Power Supplies | 05 Sep 1999 |
For additional terms or required resources, click any title below to view the detail page where available.
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| TSSOP (PW) | 8 | Ultra Librarian |
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