LM2596S-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2596S-12 is a fixed-output step-down switching regulator manufactured by UMW. It provides a regulated 12V output with a maximum current capacity of 3A. The device operates from an input voltage range up to 40V and utilizes a fixed 150kHz PWM switching frequency. It features a TO-263-5L surface-mount package and supports an operating temperature range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates all active functions for a buck converter, including internal oscillator and error amplifier
• Provides fixed 12V output with high line and load regulation capabilities
• Includes built-in thermal shutdown and current limiting protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems
• On-card regulation modules
• Standard 5V logic supply stepping down from higher rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer marking matches UMW specifications. Confirm the suffix indicates the standard 40V input version rather than the HV variant. Ensure the package type corresponds to TO-263-5L or D2PAK as listed in official datasheets. Cross-reference ordering codes with distributor catalogs to ensure correct reel or tube packaging.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output is required at up to 3A. It is suitable for applications where input voltages do not exceed 40V. Consider external component values based on specific load currents and input voltage differentials to maintain efficiency and stability within the specified temperature range.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2596 series of monolithic integrated circuits designed as step-down switching regulators. The 'S' suffix typically denotes the surface-mount package variant. The series is known for requiring minimal external components and offering high efficiency due to its 150kHz switching frequency.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2596SX-12/NOPB (Texas Instruments)

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage for the LM2596S-12?

The maximum input voltage is 40V.

Does this device support synchronous rectification?

No, it uses a non-synchronous buck topology with an internal switch and external catch diode.