Refer to the PDF data sheet for device specific package drawings
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.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
UCC2813-x,
UCC3813-x |
PDIP (8) | 6.35 mm × 9.81 mm |
SOIC (8) | 3.91 mm × 4.90 mm | |
TSSOP (8) | 4.40 mm × 3.00 mm |
Changes from E Revision (August, 2016) to F Revision
Changes from D Revision (May 2013) to E Revision
Changes from C Revision (August 2010) to D Revision
Changes from B Revision (April 2008) to C Revision
PART NUMBER(1) | MAXIMUM DUTY CYCLE | REFERENCE VOLTAGE | TURNON THRESHOLD | TURNOFF THRESHOLD | UNIT |
---|---|---|---|---|---|
UCCx813-0 | 100% | 5 | 7.2 | 6.9 | V |
UCCx813-1 | 50% | 5 | 9.4 | 7.4 | V |
UCCx813-2 | 100% | 5 | 12.5 | 8.3 | V |
UCCx813-3 | 100% | 4 | 4.1 | 3.6 | V |
UCCx813-4 | 50% | 5 | 12.5 | 8.3 | V |
UCCx813-5 | 50% | 4 | 4.1 | 3.6 | V |