LM2596S-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The UMW LM2596S-5.0 is a monolithic integrated circuit step-down voltage regulator operating at a fixed 150 kHz switching frequency. It provides a fixed 5V output with a maximum load current of 3A and accepts an input voltage range from 4.5V to 40V. The device utilizes TO-263-5 surface-mount packaging. Internal compensation and a fixed-frequency oscillator simplify design, requiring minimal external components. It features ±4% output voltage tolerance and includes thermal shutdown and current limiting protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Fixed 5V output with internal feedback network
• Integrated high-current power switch
• TTL-compatible shutdown control
• Built-in thermal and current protection

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial power management systems
• On-board DC/DC conversion for automotive electronics
• Distributed power supply architectures
• Battery-powered systems requiring efficient step-down regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer marking on the component body matches UMW specifications. Confirm the suffix 'S' indicates the TO-263 surface-mount package variant. Ensure the part number corresponds to the fixed 5.0V output version rather than adjustable or other voltage variants. Cross-reference datasheet revision numbers to confirm pinout compatibility.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V rail is required from inputs up to 40V. The 150kHz frequency allows for smaller passive components compared to lower-frequency regulators. Ensure adequate thermal management is designed into the PCB layout, as heat dissipation is critical when handling loads near the 3A maximum rating in the TO-263 package.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2596 series of SIMPLE SWITCHER power converters. The series offers fixed outputs of 3.3V, 5V, and 12V, alongside an adjustable version. The LM2596S-5.0 specifically denotes the surface-mount variant with a fixed 5V output, distinguishing it from through-hole packages and other voltage settings within the same family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2596SX-5.0/NOPB (Texas Instruments) is a direct functional equivalent with identical electrical characteristics and pinout.