The LM2576HVT-ADJ/NOPB(购买请点击) series of regulators are monolithic integratedcircuits that provide all the active functions for a switching regulator, capable of driving 3A load withexcellent line and load regulation. These devices are availablein fixed output voltages of 3.3V, 5V, 12V, 15V, and anadjustable output version.
Requiring a minimum number of external components, theseregulators are simple to use and include internal frequencycompensation and a fixed-frequency oscillator.The LM2576HVT-ADJ/NOPB(购买请点击)series offers a high-efficiency replacement forpopular three-terminal linear regulators. It substantially reducesthe size of the heat sink, and in some cases no heatsink is required.
A standard series of inductors optimized for use with the LM2576HVT-ADJ/NOPB(购买请点击) are available from several different manufacturers.This feature greatly simplifies the design of switch-modepower supplies.Other features include a guaranteed ±4% tolerance on outputvoltage within specified input voltages and output loadconditions, and ±10% on the oscillator frequency. Externalshutdown is included, featuring 50 μA (typical) standby current.The output switch includes cycle-by-cycle current limiting,as well as thermal shutdown for full protection underfault conditions.
Features
3.3V, 5V, 12V, 15V, and adjustable output versionsLM2576HVT-ADJ/NOPB(购买请点击);
Adjustable version output voltage range,1.23V to 37V (57V for HV version) ±4% max overline and load conditions;
Guaranteed 3A output current;
Wide input voltage range, 40V up to 60V forHV 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 inductorsLM2576HVT-ADJ/NOPB(购买请点击);
Thermal shutdown and current limit protection;
P+ Product Enhancement tested。
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