LM2594MX-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2594MX-12/NOPB is a SIMPLE SWITCHER® step-down voltage regulator from Texas Instruments, housed in an 8-SOIC package. It operates with an input voltage range of 4.5 V to 40 V and provides a fixed 12 V output at up to 500 mA. The device integrates a 150 kHz switching frequency and features a shutdown pin for power management. It functions within a junction temperature range of -40°C to +125°C and draws a typical quiescent current of 5 mA.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated 150 kHz oscillator eliminates external timing components
• Internal error amplifier ensures tight output voltage regulation
• Built-in thermal shutdown protects against overheating
• Fixed 12 V output option simplifies design without feedback resistors

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Input voltage step-down for microcontroller power supplies
• Battery-powered equipment requiring efficient voltage conversion
• Industrial control system power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix /NOPB indicates lead-free and RoHS compliance. Confirm the MX package variant matches the required SOIC-8 footprint. Ensure the -12 designation corresponds to the fixed 12 V output requirement. Cross-reference the manufacturer part number with official TI documentation to avoid counterfeit components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12 V output is required from a 4.5 V to 40 V input source. The 500 mA output current limits suitability for higher power applications. Consider the 150 kHz frequency for balancing component size and efficiency. Evaluate thermal performance based on expected load current and ambient conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2594 family of SIMPLE SWITCHER regulators. It shares topology and control architecture with other variants like the adjustable LM2594MX-ADJ and different voltage outputs such as the LM2594MX-5.0/NOPB. All variants utilize the same 8-SOIC package and internal control circuitry, differing primarily in output configuration.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LM2594MX-12/NOPB equivalents from authorized distributors. Verify pin compatibility and electrical specifications before substitution. Alternative packages like TO-263 may require schematic redesign.