LM5009MMX

Voltage Regulators - DC DC Switching Regulators Overview

The LM5009MMX is a non-synchronous buck regulator from Texas Instruments, housed in an 8-VSSOP package. It features a wide input voltage range of 9.5V to 95V and delivers up to 150mA output current. The device utilizes a constant on-time (COT) control architecture with a fixed switching frequency of 600kHz. It supports adjustable output voltages between 2.5V and 85V. Operating temperatures span from -40°C to +125°C, with a quiescent current of 485µA.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Employs a constant on-time control topology for simplified external component selection and fast transient response.
• Supports a wide input voltage range extending up to 95V, suitable for high-voltage bus applications.
• Integrates thermal shutdown protection to safeguard the device during over-temperature conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial power supply systems
• Automotive electronics modules
• Point-of-load regulation circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'X' against official documentation, as it may denote tape-and-reel packaging or regional variations distinct from the standard MM/NOPB designation. Confirm RoHS compliance status and ensure the part number matches the exact datasheet revision required for your design. Cross-reference with authorized distributors to validate authenticity and traceability before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a non-synchronous solution is acceptable for lower cost or simplicity in small form factor designs. Ensure the load current does not exceed 150mA and that the input voltage remains within the 9.5V to 95V window. Consider the 600kHz fixed frequency for EMI filtering requirements and verify that the VSSOP-8 package fits the PCB layout constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM5009 family of wide-input voltage buck converters. It serves as a compact step-down solution for applications requiring moderate current levels. The family emphasizes ease of use through constant on-time control, reducing the need for complex compensation networks compared to traditional PWM controllers.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LM5009MM has been marked as obsolete. The recommended replacement is the LM5009MM/NOPB. Verify pinout compatibility and electrical specifications to ensure seamless integration into existing designs without hardware modifications.