LM5013QDDARQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM5013QDDARQ1 is an automotive-grade, non-synchronous buck DC/DC converter designed for high-voltage applications. It features a wide input voltage range from 6 V to 100 V and delivers up to 3.5 A of output current. The device utilizes a constant on-time (COT) control architecture with a fixed 1 MHz switching frequency. Key electrical parameters include a minimum controllable on-time of 50 ns, an adjustable output voltage range of 1.2 V to 50 V, and a maximum junction temperature rating of +150°C. It operates within an ambient temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• AEC-Q100 qualified for automotive reliability with extended junction temperature capability up to +150°C
• Integrated high-side power MOSFET eliminates external switch requirements and reduces solution size
• Constant on-time control architecture provides stable operation without loop compensation components
• Optimized for ultra-low electromagnetic interference compliance with CISPR 25 Class 5 standards

Voltage Regulators - DC DC Switching Regulators Applications

• Hybrid electric vehicle (HEV) and electric vehicle (EV) power systems
• 48V battery systems in mild hybrid electric vehicles (MHEV)
• Powertrain and transmission control units
• Industrial transportation power distribution networks

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'Q1' confirms AEC-Q100 automotive qualification status against the manufacturer's official datasheet. Ensure the SO-PowerPAD-8 package thermal characteristics match your PCB layout capabilities. Confirm that the 100V input rating aligns with your system's transient voltage specifications. Cross-reference the pinout diagram to ensure compatibility with existing board designs before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing for high-input voltage environments requiring robust surge handling. The integrated bias supply simplifies design by removing the need for auxiliary winding or resistor dividers. Consider the 50ns minimum on-time for applications demanding high step-down ratios from 48V sources. Evaluate the thermal performance at full load given the 3.5A current capability and the specific thermal resistance of the PowerPAD package.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM5013 family of non-synchronous buck converters. It shares functional similarities with the LM5163-Q1 and LM5164-Q1, offering pin-to-pin compatibility for scalable power designs. The Q1 designation indicates it meets strict automotive quality and reliability standards, distinguishing it from commercial grade variants like the standard LM5013DDAR.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM5163QDDARQ1 and LM5164QDDARQ1 are confirmed pin-to-pin compatible substitutes within the same family, offering different current ratings.