SIP2804

SiP2800/01/02/03/04/05 New Product Vishay Siliconix Low Power Consumption Current Mode Controller FEATURES D D D D D D Pin-for-Pin Compatible with UCC280X Controllers Enhanced Performance UC284X for New Designs 100-mA Typical Start-Up Current 500-mA Typical Operating Current Internal Soft Start at Power-On and After Fault 100-ns Internal Leading Edge Blanking APPLICATIONS D D D D D Efficiency-Enhanced DC/DC Converter Modules Low Quiescent Current Standby Power Supplies Offline (AC/DC) Power Supplies Universal Input Power Supplies Buck, Boost, and Buck-Boost Converters DESCRIPTION The SiP280X family includes six high-speed, low power consumption, BiCMOS Current Mode Controllers. These integrated circuits contain all of the control and drive functions required for off-line and dc-to-dc current-mode switching power supplies. Their advanced architecture enables the implementation of full-featured designs with minimal external parts count. Maximum Duty Cycle 100% 50% 100% 100% 50% 50% The SiP280X family controllers are available in both standard and lead (Pb)-free, SO-8 and TSSOP-8 packages, and are rated for operation over the industrial temperature range of --40 to 85 _C. Part Number SiP2800 SiP2801 SiP2802 SiP2803 SiP2804 SiP2805 Reference Voltage 5V 5V 5V 4V 5V 4V Turn-On Threshold 7.2 V 9.4 V 12.5 V 4.1 V 12.5 V 4.1 V Turn-Off Threshold 6.9 V 7.4 V 8.3 V 3.6 V 8.3 V 3.6 V TYPICAL APPLICATION CIRCUIT +48 V + + 12 V/3 A + FB VCC COMP SiP2801 RC REF GND OUT CS GND Flyback Converter for Point of Load Application Document Number: 72660 S-41623—Rev.C, 30-Aug-04 www.vishay.com 1 SiP2800/01/02/03/04/05 Vishay Siliconix ABSOLUTE MAXIMUM RATINGS VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 V FB, Comp, CS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . --0.3 V to 6 V Power Disispation SO-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 W Power Disispation TSSOP-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 830 mW StorageTemperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . --55 to 150_C New Product Currents are positive into, negative out of the specificed terminal. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. RECOMMENDED OPERATING RANGE Input Voltage SiP2803/5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 to 11 V Input Voltage SiP2800/1/2/4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 to 11 V Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . --40 to 85_C SPECIFICATIONS Test Conditions Unless Specified Parameter Reference ILOAD = 0.2 mA, TA= 25 °C LOAD Reference Voltage erence tage VREF REF SiP2800/1/2/4 SiP2803/5 Load Regulation Line Regulation Line Regulation Noise Short Circuit Current ∆VLOAD ∆VLINE VNOISE ISC 0.2mA< ILOAD