LM2594MX-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2594MX-3.3/NOPB is a step-down switching voltage regulator from the SIMPLE SWITCHER family, manufactured by Texas Instruments. It operates with a fixed internal switching frequency of 150 kHz and delivers a maximum output current of 500 mA. The device provides a fixed 3.3 V output and accepts an input voltage range from 4.5 V to 40 V. Packaged in an SOIC-8 surface-mount format, it supports operation across an extended temperature range from -40°C to +125°C. The component includes integrated shutdown functionality and maintains a typical quiescent current of 5 mA.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power switch rated for 0.5 A continuous output current
• Fixed 150 kHz switching frequency eliminates external compensation requirements
• Built-in thermal shutdown and current limit protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for digital logic circuits
• Battery-powered equipment requiring efficient step-down conversion
• General-purpose DC/DC converter modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against official datasheets to confirm pinout compatibility and electrical tolerances. Ensure the package marking matches the SOIC-8 designation. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and revision history before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required from an input voltage up to 40 V. It is suitable for applications prioritizing simplicity over adjustable output flexibility. Consider the 150 kHz frequency for standard passive component sizing. Evaluate thermal performance based on the expected load current and ambient operating conditions within the specified temperature range.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2594 series of SIMPLE SWITCHER regulators, designed for high-efficiency buck conversions. It shares architectural similarities with other members like the LM2594MX-5.0 but differs in fixed output voltage. The series is characterized by minimal external component count and robust protection features for industrial and commercial environments.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LM2594MX-3.3/NOPB variants from the same manufacturer. Verify that alternative sources maintain identical SOIC-8 packaging and 150 kHz frequency specifications to ensure circuit compatibility without redesign.