●Description
●The LM2576 series of regulators are monolithic integrated circuits that provide all the active functions
●for a step-down (buck) switching regulator, capable of driving 3-A load with excellent line and load
●regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, and an adjustable output version.
●Features
●• 3.3-V, 5-V, 12-V, 15-V, and Adjustable Output Versions
●• Adjustable Version Output Voltage Range,1.23 V to 37 V (57 V for HV Version) ±4% Maximum Over Line and Load Conditions
●• Specified 3-A Output Current
●• Wide Input Voltage Range: 40 V Up to 60 V for HV Version
●• 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
●Applications
●• Simple High-Efficiency Step-Down (Buck) Regulator
●• Efficient Preregulator for Linear Regulators
●• On-Card Switching Regulators
●• Positive-to-Negative Converter (Buck-Boost)
