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DESCRIPSION

The LM2576HV series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving 3A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5.0V, 12V, 15V and adjustable output versions.

FEATURES

● Step-down Switching Regulator

● Adjustable Version Output Voltage Range, 1.23V to 52V ± 4 Max over Line and Load conditions

● Guaranteed Output Current of 3A

● Fixed Output Voltages : 3.3V, 5.0V, 12V and 15V

● Wide Input Voltage Range 60V

● 52 kHz Fixed Frequency Oscillator

● TTL Shutdown Capability, Low Power Standby Mode

● Requires only 4 External Components

● High Efficiency

● Use Readily Available Standard Inductors

● Available in TO-220, TO-263 and SOP-8PP Packages

● Thermal Shutdown and Current Limit Protection

● Moisture Sensitivity Level 3

APPLICATION

● Simple high-efficiency step-down (buck) regulator

● Efficient pre-regulator for linear regulators

● On-card switching regulators

● Positive to negative converter (Buck-Boost)