40V, 3.0A, 52kHz, STEP-DOWN SWITCHING REGULATOR LM2576HVR-5.0
FEATURES:
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 for SMD Packages
DESCRIPTION:
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.
Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed-frequency oscillator.
The LM2576HV series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in some cases no heat sink is required. A standard series of inductors optimized for use with the LM2576HV are available from several different manufacturers.
This feature greatly simplifies the design of switch-mode power supplies.
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