LM2594HVM-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2594HVM-3.3/NOPB is a SIMPLE SWITCHER step-down voltage regulator from Texas Instruments, operating at a fixed switching frequency of 150 kHz. It accepts an input voltage range of 4.5 V to 60 V and provides a fixed output of 3.3 V with a maximum load current of 500 mA. The device utilizes a SOIC-8 surface-mount package and features internal compensation for stable operation. Key electrical parameters include a typical efficiency of 75% and a quiescent current of 5 mA. It operates within a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power switch capable of delivering up to 500 mA output current
• Fixed 150 kHz switching frequency allows for small external component sizes
• Internal frequency compensation simplifies design requirements
• Built-in thermal shutdown and current limit protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in distributed power systems
• Pre-regulation for switching regulators
• Standard 5-V rail conversion from higher bus voltages
• Battery-powered systems requiring high-efficiency DC-DC conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete ordering part number includes the NOPB suffix to ensure lead-free compliance and RoHS standards. Confirm the specific package variant (e.g., HVM for SOIC) matches the target PCB footprint. Cross-reference the manufacturer's latest datasheet revision to validate pinout compatibility and thermal characteristics before finalizing procurement specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required from inputs up to 60 V with moderate current demands. The fixed frequency reduces external filter size compared to adjustable variants. Ensure the application does not exceed the 500 mA continuous current rating. Consider thermal dissipation requirements based on the voltage differential and load current in the chosen SOIC-8 package.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2594HV series of SIMPLE SWITCHER regulators, designed for high-voltage input applications. It shares architectural similarities with the LM2594 but offers enhanced input voltage tolerance. The family is characterized by ease of use due to integrated compensation and protection features, targeting efficient power management in industrial and commercial environments.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LM2594HVMX-3.3/NOPB for tape-and-reel packaging or LM2594HVN-3.3/NOPB for through-hole DIP packages. Verify that alternative versions maintain identical pinouts and thermal performance characteristics to ensure seamless integration without PCB redesign.