LM5164QDDATQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM5164QDDATQ1 is a Texas Instruments synchronous buck DC/DC converter featuring a 6V to 100V input range and 1A output current. It utilizes a constant on-time control architecture with a 50ns minimum controllable on-time for high step-down ratios. The device integrates high-side and low-side power MOSFETs, offering ultra-low IQ of 10µA typical at no-load and 3µA in shutdown. It operates within a junction temperature range of -40°C to 150°C and includes features such as peak and valley overcurrent protection, integrated VCC bias supply, and thermal shutdown with auto-recovery.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side and low-side power MOSFETs delivering up to 1A output current
• Ultra-low quiescent current supporting extended battery life in standby modes
• Constant on-time control architecture ensuring stable switching frequency and transient response
• Robust protection mechanisms including peak and valley current limits and thermal shutdown

Voltage Regulators - DC DC Switching Regulators Applications

• High-performance 48V automotive battery systems
• Light hybrid electric vehicle (HEV) and electric vehicle (EV) power architectures
• Industrial applications requiring wide input voltage regulation
• Battery management systems for multi-cell battery packs

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'Q' indicates AEC-Q100 automotive qualification and 'T' denotes tape-and-reel packaging. Confirm the manufacturer is Texas Instruments. Ensure the part number matches the exact pinout and thermal characteristics of the 8-SO PowerPAD package. Cross-reference datasheet revisions to ensure compatibility with existing design specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring high input voltages up to 100V with minimal external component count. The integrated MOSFETs eliminate the need for external Schottky diodes. Consider the 50ns minimum on-time for applications demanding large step-down ratios from nominal 48V inputs. Evaluate the thermal performance within the SO PowerPAD package for the expected load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM5164 family of synchronous buck converters designed for high-voltage, high-efficiency applications. It shares architectural similarities with the LM5163 but offers higher current capability. The Q1 suffix distinguishes it as an automotive-grade device compliant with AEC-Q100 standards, suitable for harsh environments compared to commercial variants.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

• LM5164DDAR
• LM5164DDAT

Voltage Regulators - DC DC Switching Regulators FAQ

What is the minimum controllable on-time of the LM5164QDDATQ1?

The device features a minimum controllable on-time of 50ns, which supports high step-down ratios.

Does the LM5164QDDATQ1 require external compensation components?

No, the constant on-time control architecture eliminates the need for external loop compensation components.

What is the operating junction temperature range?

The junction temperature range is specified from -40°C to 150°C.