LM5164DDAR

Voltage Regulators - DC DC Switching Regulators Overview

The LM5164DDAR is a synchronous buck DC-DC converter from Texas Instruments, housed in an 8-SO PowerPAD package. It supports an input voltage range of 6 V to 100 V and delivers up to 1 A of output current. The adjustable output voltage spans from 1.2 V to 90 V. Operating with a fixed switching frequency of 1 MHz, the device features a minimum controllable on-time of 50 ns. It maintains a typical quiescent current of 600 uA and functions within a junction temperature range of -40 °C to +150 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side and low-side power MOSFETs provide up to 1 A output current capability.
• Constant on-time control architecture ensures nearly constant switching frequency with excellent transient response.
• Diode emulation mode operation enables high efficiency during light load conditions.
• Innovative peak and valley overcurrent protection mechanisms safeguard against fault conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial systems requiring wide input voltage regulation
• High cell count battery pack applications
• Direct step-down conversion from 48V nominal inputs
• Power supplies for motor gate drivers

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific ordering suffix to confirm package type and reel specifications. Ensure compatibility with moisture sensitivity level requirements during storage and assembly. Confirm RoHS compliance status matches project environmental standards. Validate that the SO-PowerPAD thermal performance meets system dissipation needs. Check for any recent product change notices affecting pinout or electrical characteristics.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a wide input voltage range up to 100 V is required alongside moderate output current. The 50 ns minimum on-time allows for significant step-down ratios from higher voltage rails. Consider the integrated bias supply and bootstrap diode to reduce external component count. Evaluate the thermal performance of the PowerPAD package for high-temperature environments.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM5164 family of high-voltage synchronous buck converters. It is designed to minimize external surge suppression components through its wide input range. The device integrates precision enable and input UVLO features for robust system control. It serves as a solution for reducing complexity in industrial and battery-powered applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM5163DDAR offers similar functionality but with a lower output current rating of 0.6 A. Verify if the reduced current capacity meets the application's peak load requirements before substitution.

Voltage Regulators - DC DC Switching Regulators FAQ

How does the LM5164 handle input voltage drops?

The device can operate at nearly 100% duty cycle when the input voltage drops to 6 V, allowing continued regulation in wide input range scenarios.

What protection features are included?

It includes innovative peak and valley overcurrent protection, thermal shutdown with auto-recovery, and precise enable and input UVLO.