LM5169FNGUR

Voltage Regulators - DC DC Switching Regulators Overview

The LM5169FNGUR is a synchronous buck DC/DC converter manufactured by Texas Instruments, housed in an 8-pin WSON package. It supports an input voltage range of 6 V to 120 V and delivers up to 650 mA of output current. The device features adjustable output voltages from 1.2 V to 90 V with a fixed minimum reference of 1.2 V. Operating at a switching frequency of 1 MHz, it maintains a typical quiescent current of 3 µA. The component functions within a junction temperature range of -40°C to +150°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates high-side and low-side N-channel power MOSFETs for synchronous rectification
• Supports Buck and Fly-Buck topologies for flexible power conversion designs
• Includes programmable soft-start and adjustable switching frequency capabilities

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial automation power systems
• Automotive electronics power distribution
• Telecommunications infrastructure equipment

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'FNGUR' against the manufacturer datasheet to confirm the exact package variant and tape-and-reel specifications. Ensure the ordering part number matches the required thermal pad configuration and moisture sensitivity level. Cross-reference the RoHS compliance status and lead times directly with authorized distributors before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing circuits requiring wide input voltage ranges up to 120 V with compact footprint constraints. The integrated synchronous rectifiers offer higher efficiency compared to diode-based solutions. Consider the 1 MHz switching frequency for optimizing external inductor and capacitor sizes while maintaining stable regulation under varying load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM516x family of high-voltage synchronous buck converters designed for robust performance in demanding environments. It shares architectural similarities with the LM5168 but offers distinct output current capabilities and packaging options. The series is engineered for applications requiring reliable power management across extended temperature ranges.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM5168FNGUR: Similar topology and input range; verify output current differences (300 mA vs 650 mA) and pin compatibility.

Voltage Regulators - DC DC Switching Regulators FAQ

Does the LM5169FNGUR support isolated flyback configurations?

Yes, the device supports Fly-Buck topology, which allows for isolated output generation using an auxiliary winding on the inductor.

What is the minimum output voltage achievable with this regulator?

The minimum adjustable output voltage is 1.2 V, determined by the internal reference voltage.