Texas Instruments UCC3802
The UCCx80x family of high-speed, low-power integrated circuits contain all of the control and drive components required for off-line and DC-to-DC fixed frequency current-mode switching mode power supplies with minimal parts count. These devices have the same pin configuration as the UCx84x family, and also offer the added features of internal full-cycle soft start and internal leadingedge blanking of the current-sense input.FEATURES
●1 100-μA Typical Starting Supply Current● 500-μA Typical Operating Supply Current
● Operation up 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 UC3842 and UC3842A 2
APPLICATIONS
● Switch Mode Power Supplies (SMPS)● DC-to-DC Converters
● Power Modules
● Industrial PSU
● Battery-Operated PSU 3
DESCRIPTION
Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) UCC1800 LCC (20) CDIP (8) 8.89 mm × 8.89 mm 6.67 mm × 9.60 mm UCC1801, UCC1802, UCC1803, UCC1804, UCC1805 CDIP (8) 6.67 mm × 9.60 mm UCC2800, UCC2801, UCC2802, UCC2803, UCC2804, UCC2805, UCC3800, UCC3801, UCC3802, UCC3803, UCC3804, UCC3805 TSSOP (8) SOIC (8) PDIP (8) 4.40 mm × 3.00 mm 3.91 mm × 4.90 mm 6.35 mm × 9.81 mm (1) For all available packages, see the orderable addendum at the end of the data sheet.