LM5010AQ1MHX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM5010AQ1MHX/NOPB is an automotive-grade, wide input voltage, constant on-time buck switching regulator manufactured by Texas Instruments. It supports an input voltage range of 6 V to 75 V and delivers a maximum output current of 1 A. The device features an adjustable output voltage from 2.5 V to 70 V and operates with a switch frequency between 50 kHz and 1 MHz. It is qualified under AEC-Q100 standards for Grade 1 applications, ensuring reliability in harsh environments. The IC operates within a junction temperature range of -40 °C to +150 °C and consumes a typical quiescent current of 650 µA. It is housed in a 14-pin HTSSOP package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive qualification compliant with AEC-Q100 Grade 1 standards for enhanced reliability in vehicle electronics.
• Wide input voltage capability supporting 6 V to 75 V operation for robust performance in noisy automotive power buses.
• Integrated constant on-time control architecture simplifies external component selection and loop compensation.
• Extended thermal performance rated for junction temperatures up to +150 °C.

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems requiring stable power delivery from fluctuating battery lines.
• Body control modules operating in high-temperature engine compartment environments.
• Industrial DC-DC conversion where wide input ranges and high reliability are critical.
• General-purpose step-down regulation for 12 V or 24 V automotive bus architectures.

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'Q1' confirms AEC-Q100 Grade 1 qualification, which dictates the allowable operating temperature range and reliability requirements distinct from commercial variants. Ensure the ordering part number matches the exact tape-and-reel quantity specified in the manufacturer's latest datasheet revision. Cross-reference the manufacturing date code against any relevant PCN notices regarding material changes or assembly site transfers to maintain supply chain consistency and compliance with automotive quality standards.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing for automotive environments requiring AEC-Q100 Grade 1 certification alongside wide input voltage tolerance. The constant on-time topology offers simplicity but requires careful consideration of output capacitance to manage transient response. Evaluate the thermal dissipation capabilities of the HTSSOP package against the expected load current and ambient temperature conditions. Confirm that the required output voltage range falls within the 2.5 V to 70 V limits and that the 1 A current rating suffices for the target application without derating concerns.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM5010A family of wide-input buck regulators designed for demanding industrial and automotive applications. The 'Q1' designation specifically denotes automotive Grade 1 qualification, distinguishing it from commercial versions like the LM5010AMHX/NOPB. The family utilizes constant on-time control to provide stable regulation across a broad input voltage spectrum, making it suitable for direct connection to unregulated automotive batteries or bus lines.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM5010AMHX/NOPB

Voltage Regulators - DC DC Switching Regulators FAQ

What does the 'Q1' suffix indicate for this part?

The 'Q1' suffix indicates that the device is qualified to AEC-Q100 Grade 1 standards, specifying the temperature range and reliability requirements for automotive applications.

Is the LM5010AQ1MHX/NOPB a synchronous rectifier?

No, the LM5010A series uses a non-synchronous buck topology with an internal high-side switch and requires an external low-side diode.

What is the minimum input voltage for operation?

The device supports a minimum input voltage of 6 V, allowing it to operate effectively even during automotive cold-crank events or low-battery conditions.