LM2578AM/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2578AM/NOPB is a monolithic integrated circuit from the SIMPLE SWITCHER family, functioning as a high-efficiency step-down DC-DC converter. It integrates a power switch capable of delivering up to 0.75 A output current with an input voltage range of 4 V to 40 V. The device operates at a fixed switching frequency of 52 kHz and includes internal compensation for stability. Key protection features include thermal shutdown and current limiting. It is housed in an 8-pin SOIC package and supports operation across an extended temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-voltage power switch rated for 40 V input
• Includes internal frequency compensation for simplified design
• Provides built-in thermal shutdown and current limiting protection

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for industrial systems
• Pre-regulator stages for switching regulators
• Battery-powered equipment requiring efficient voltage conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'AM' against official Texas Instruments documentation to confirm the exact temperature grade and package variant. Ensure compatibility with required PCB footprint dimensions for the SOIC-8 package. Confirm RoHS compliance status via the manufacturer's latest datasheet revision history before finalizing procurement specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed-frequency buck topology is required for moderate current loads up to 750 mA. It is suitable for designs needing wide input voltage ranges without external compensation components. Consider alternative packages if higher current capacity or different thermal dissipation characteristics are necessary for the target application environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2578 series of switching regulator control circuits originally developed by National Semiconductor and now manufactured by Texas Instruments. The series provides versatile solutions for various DC-DC topologies including buck, boost, and inverting configurations. The LM2578AM/NOPB specifically represents the advanced military/industrial grade version within this established product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LM2578MX/NOPB and LM2578SX/NOPB for pin-compatible alternatives. Cross-reference with LM3578 variants for commercial temperature range requirements. Verify that any replacement maintains the same 52 kHz switching frequency and 0.75 A current rating.