LM5013DDAR

Voltage Regulators - DC DC Switching Regulators Overview

The LM5013DDAR is a non-synchronous buck DC/DC converter from Texas Instruments, designed for high-voltage applications. It features an input voltage range of 6V to 100V and delivers up to 3.5A output current. The device utilizes a constant on-time (COT) control architecture with a fixed 1MHz switching frequency. Key electrical parameters include a minimum controllable on-time of 50ns, supporting large step-down ratios. It operates within a junction temperature range of -40°C to +150°C and includes integrated protection features such as peak current limit, thermal shutdown, and input UVLO.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Constant on-time control architecture provides nearly constant switching frequency and excellent transient response
• Integrated high-side power MOSFET with low on-resistance reduces external component count
• Optimized for ultra-low electromagnetic interference compliance with CISPR 25 Class 5 standards
• Built-in bias supply and bootstrap diode simplify circuit design

Voltage Regulators - DC DC Switching Regulators Applications

• Hybrid electric vehicle (HEV) and mild hybrid electric vehicle (MHEV) power systems
• Electric vehicle (EV) battery management and power distribution
• Industrial transportation and heavy-duty vehicle electronics
• Inverter and motor control subsystems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'DDAR' corresponds to the SO-PowerPAD-8 package and reel packaging configuration required for your assembly process. Confirm that the standard 16-week production cycle aligns with your project timeline. Ensure compatibility with your board's thermal management strategy, as the device dissipates significant heat at full load. Check for any regional regulatory requirements regarding automotive-grade components if used in certified vehicles.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a wide input voltage range up to 100V is required alongside high current capability. It is suitable for direct 48V-to-low-voltage rail conversion without intermediate stages. Consider the COT topology for simpler compensation compared to voltage-mode controllers. Evaluate the thermal performance in your enclosure, as the PowerPAD package requires adequate copper area for heat dissipation to maintain reliability under continuous operation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM5013 family of automotive-grade buck converters. It shares architectural similarities with the LM5163-Q1 and LM5164-Q1, offering pin-to-pin compatibility for scaling current requirements. The LM5013DDAR specifically denotes the non-synchronous version optimized for higher efficiency at moderate loads compared to synchronous alternatives in some topologies. It is part of Texas Instruments' portfolio for robust, high-voltage power solutions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM5163QDDARQ1

Voltage Regulators - DC DC Switching Regulators FAQ

Does the LM5013DDAR support synchronous rectification?

No, the LM5013DDAR is a non-synchronous buck converter. It uses an integrated high-side N-channel MOSFET and relies on an external or internal body diode for the low-side path.

What is the minimum controllable on-time of the device?

The minimum controllable on-time is 50ns, which allows for high step-down ratios even at high switching frequencies.