LM2596T-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2596T-5.0/NOPB is a monolithic integrated circuit step-down (buck) switching regulator from the SIMPLE SWITCHER family, originally by National Semiconductor and now manufactured by Texas Instruments. It operates at a fixed 150 kHz switching frequency to minimize external filter component size. The device provides a guaranteed 3 A output load current with excellent line and load regulation. It accepts an input voltage range of 4.5 V to 40 V and delivers a fixed 5.0 V output. The unit is housed in a 5-lead TO-220 through-hole package and includes internal frequency compensation, thermal shutdown, and current limit protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Fixed 150 kHz internal oscillator for reduced passive component size
• Integrated thermal shutdown and two-stage current limit protection
• TTL-compatible shutdown pin for low-power standby control
• Requires only four external components for basic operation

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems
• Pre-regulator circuits for switching regulators
• Standard 5V logic supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the ordering suffix /NOPB confirms lead-free and RoHS compliance status as defined by the manufacturer's current specifications. Confirm the physical package is the 5-lead TO-220 variant suitable for through-hole mounting. Ensure the part number explicitly denotes the fixed 5.0 V output version rather than the adjustable or other fixed voltage variants within the LM2596 series.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5 V output is required from a higher input voltage rail up to 40 V. It is suitable for applications needing up to 3 A continuous load current with minimal external bill of materials. Consider the TO-220 package for thermal management needs in through-hole designs. Evaluate if the 150 kHz frequency aligns with EMI constraints and inductor availability requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2596 series of SIMPLE SWITCHER power converters. The series includes fixed output versions (3.3 V, 5 V, 12 V) and an adjustable version. The LM2596T-5.0/NOPB specifically designates the 5.0 V fixed output variant in the TO-220 package. The /NOPB suffix indicates a non-phosphorus leaded, environmentally compliant product manufactured by Texas Instruments following their acquisition of National Semiconductor assets.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2596T-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage for the LM2596T-5.0/NOPB?

The maximum input voltage is 40 V.

Does the LM2596T-5.0/NOPB support external shutdown?

Yes, it features a TTL shutdown capability via the ON/OFF pin.