LM5010MHX

The LM5010MHX from Texas Instruments is a high-voltage, 1-A step-down switching regulator designed for efficient power conversion. It features a wide input voltage range from 8 V to 75 V, making it suitable for various applications. The device utilizes a constant on-time (COT) control mode, which requires no loop compensation and offers ultra-fast transient response.

Key electrical characteristics include a maximum output current of 1 A, a typical quiescent current of 0.65 mA, and a switching frequency that can exceed 1 MHz. The regulator has an adjustable output voltage with a precision 2.5-V feedback reference and a maximum duty cycle limited during start-up. It also incorporates features like enable and over-current protection.

The LM5010MHX is available in HTSSOP (PWP) 14 and WSON (DPR) 10 packages, both designed for surface mounting. These packages offer improved heat dissipation, with the WSON package being smaller at 16 mm² compared to the HTSSOP's 32 mm². The operating temperature range is -40°C to 125°C, ensuring reliable performance in demanding environments.

This buck regulator is well-suited for applications requiring efficient and stable voltage regulation from a wide input voltage source. Its integrated N-channel buck switch and start-up regulator simplify design and reduce component count.