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i am Anil vishwakarma Welcome to our KZbin channel Science innovative brain.
About This Video:
IN THIS VIDEO LECTURE I AM EXPALING ABOUT THE FIXED OUTPUT SWITCHING REGULATOR LM2576 WHICH CAN DILIVER 3 AMP OUTPUT CURRENT.
IN THIS DESIGN I EXPLAINED DESIGN OF 5 VOLT DC & 3 AMP LOAD CUEENT. THIS REGULATOR HAIVING INTERNAL OSSILATOR WHICH IS GENERATING 52 KHz, TO DESIGN THE REQUIRED OUTPUT VOLTAGE AND CURRENT WE HAVE TO REQUIRED ONLY 4 EXTERNAL COMPONENT WHICH IS VERY GOOD ADVANTAGE TO REDUCE THE EXTERNAL COMPONENT AS WELL AS COMPACT POWER SUPPLY DESIGN.
THESE DEVICES ARE AVAILABLE IN FIXED OUTPUT VOLTAGES OF 3.3 V, 5.0 V, 12 V, 15 V, AND AN ADJUSTABLE OUTPUT VERSION
SINCE THE LM2576 CONVERTER IS A SWITCH−MODE POWER SUPPLY, ITS EFFICIENCY IS SIGNIFICANTLY HIGHER IN COMPARISON WITH POPULAR THREE−TERMINAL LINEAR REGULATORS, ESPECIALLY WITH HIGHER INPUT VOLTAGES. IN MANY CASES, THE POWER DISSIPATED IS SO LOW THAT NO HEATSINK IS REQUIRED OR ITS SIZE COULD BE REDUCED DRAMATICALLY.
FEATURES
• 3.3 V, 5.0 V, 12 V, 15 V, AND ADJUSTABLE OUTPUT VERSIONS
• ADJUSTABLE VERSION OUTPUT VOLTAGE RANGE, 1.23 TO 37 V ±4% MAXIMUM OVER LINE AND LOAD CONDITIONS
• GUARANTEED 3.0 A OUTPUT CURRENT
• WIDE INPUT VOLTAGE RANGE
• REQUIRES ONLY 4 EXTERNAL COMPONENTS
• 52 KHZ FIXED FREQUENCY INTERNAL OSCILLATOR
• TTL SHUTDOWN CAPABILITY, LOW POWER STANDBY MODE
• HIGH EFFICIENCY • USES READILY AVAILABLE STANDARD INDUCTORS
• THERMAL SHUTDOWN AND CURRENT LIMIT PROTECTION
• MOISTURE SENSITIVITY LEVEL (MSL) EQUALS 1
• PB−FREE PACKAGES ARE AVAILABLE
APPLICATIONS
• SIMPLE HIGH−EFFICIENCY STEP−DOWN (BUCK) REGULATOR
• EFFICIENT PRE−REGULATOR FOR LINEAR REGULATORS
• ON−CARD SWITCHING REGULATORS
• POSITIVE TO NEGATIVE CONVERTER (BUCK−BOOST)
• NEGATIVE STEP−UP CONVERTERS
• POWER SUPPLY FOR BATTERY CHARGERS
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