LM5009MM

Voltage Regulators - DC DC Switching Regulators Overview

The LM5009MM is a non-synchronous buck regulator from Texas Instruments, designed for wide input voltage applications ranging from 9.5V to 95V. It delivers a maximum output current of 150mA with an adjustable output voltage range of 2.5V to 85V. The device operates at a fixed switching frequency of 600kHz and utilizes a constant on-time control architecture. It is housed in an 8-pin VSSOP package and supports an operating temperature range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Constant on-time control architecture for simplified external component selection
• Wide input voltage capability supporting high-voltage power distribution systems
• Integrated bootstrap diode eliminates the need for external Schottky components

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial point-of-load regulation
• High-voltage battery-powered equipment
• Automotive electronics subsystems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., NOPB) against the datasheet to confirm RoHS compliance status. Confirm the package designation matches the required footprint, as variations exist between MM and other suffixes. Check official Texas Instruments documentation for the most recent lifecycle status, as this component may be subject to obsolescence notices or production changes.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this regulator when a simple, cost-effective solution is required for step-down conversion from high-voltage sources. The constant on-time topology reduces the number of external components compared to voltage-mode controllers. Ensure the application does not require synchronous rectification, as this model uses a non-synchronous design which impacts efficiency at very low output voltages.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM5009 family of wide-input buck regulators. It shares architectural similarities with other constant on-time devices but is distinct in its specific voltage ratings and current capabilities. It serves as a foundational component for designers needing reliable regulation in noisy industrial environments without complex feedback compensation requirements.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM5009MM/NOPB is the RoHS-compliant version of this part. Verify pinout compatibility if substituting with other wide-input buck converters from different manufacturers.