UCC3813-5

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design UCC2813-0, UCC2813-1, UCC2813-2, UCC2813-3, UCC2813-4, UCC2813-5 UCC3813-0, UCC3813-1, UCC3813-2, UCC3813-3, UCC3813-4, UCC3813-5 SLUS161E – APRIL 1999 – REVISED AUGUST 2016 UCCx813-x Low-Power Economy BiCMOS Current-Mode PWM 1 Features 1 100-µA Typical Starting Supply Current 500-µA Typical Operating Supply Current Operation to 1 MHz Internal Soft Start Internal Fault Soft Start Internal Leading-Edge Blanking of the Current- Sense Signal 1-A Totem-Pole Output 70-ns Typical Response from Current-Sense to Gate-Drive Output 1.5% Tolerance Voltage Reference Same Pinout as the UCC3802 Device, UC3842 Device, and UC3842A Device Families 2 Applications Switch Mode Power Supplies (SMPS) DC-DC Converters Power Modules Industrial PSUs Battery Operated PSUs 3 Description The UCC3813-x device family of high-speed, lowpower integrated circuits contains all of the control and drive components required for off-line and DC-toDC 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 volt...