LM2596T-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The LM2596T-5.0 is a monolithic integrated circuit step-down switching regulator from the SIMPLE SWITCHER family, manufactured by National Semiconductor. It provides a fixed 5.0V output with a maximum load current of 3A. The device operates at a fixed switching frequency of 150 kHz, allowing for smaller filter components compared to lower-frequency regulators. It accepts an input voltage range of 4.5V to 40V and features internal frequency compensation. The TO-220-5 package includes thermal shutdown and current limit protection circuits.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Fixed 5.0V output voltage with high line and load regulation accuracy
• Integrated 150 kHz oscillator eliminates need for external frequency compensation
• Internal thermal shutdown and current limit protection circuits ensure device safety
• Requires minimal external components for standard buck converter topology

Voltage Regulators - DC DC Switching Regulators Applications

• General-purpose DC-DC step-down power supplies
• Pre-regulator stages for linear regulators
• Battery-powered systems requiring efficient voltage reduction
• Embedded electronics with 5V logic requirements

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify manufacturer marking matches National Semiconductor specifications. Confirm package type is TO-220-5 through-hole. Check datasheet for specific suffix codes indicating temperature range or packaging variations. Ensure component authenticity through authorized distribution channels to avoid counterfeit parts affecting reliability.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 5V output is required with up to 3A load capacity. Consider the 150 kHz switching frequency for inductor size trade-offs. Evaluate thermal performance based on input-output voltage differential and ambient conditions. Compare against adjustable versions if variable output is needed later.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2596 series of SIMPLE SWITCHER power converters. It is functionally similar to other fixed-voltage variants like LM2596T-3.3 and LM2596T-12, differing only in the internal feedback network setting the output voltage. It complements higher-current or higher-voltage variants within the same product family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LM2596T-5.0/NOPB from Texas Instruments. Cross-reference with LM2576HVT-5.0 for higher input voltage applications, noting differences in maximum input rating and switching frequency characteristics.