LM5190RGYR

Overview

The LM5190RGYR is a synchronous buck controller from Texas Instruments designed for high-voltage applications. It supports an input voltage range of 5 V to 80 V and delivers adjustable output voltages from 800 mV to 79 V. The device operates with a switching frequency between 100 kHz and 2.2 MHz, featuring a low quiescent current of 2.3 uA. Packaged in a VQFN-EP-19 format, it functions within a temperature range of -40°C to +150°C.

Feature Summary

• Supports wide input voltage ranges up to 80 V for flexible power distribution
• Enables compact designs through high-frequency operation capabilities
• Provides precise output regulation with adjustable voltage settings

Applications

• Industrial power supplies
• Telecommunications infrastructure
• Point-of-load conversion modules

Procurement Notes

Verify the specific suffix RGYR against the manufacturer datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with your PCB footprint for the VQFN-EP-19 package. Confirm thermal requirements align with the specified operating temperature range before finalizing procurement.

Selection Notes

Select this component when designing systems requiring high input voltages up to 80 V. It is suitable for applications needing efficient synchronous rectification and wide input flexibility. Consider the thermal performance and package size constraints relative to the VQFN-EP-19 form factor during the design phase.

Part Context

This part belongs to the LM5190 family of synchronous buck controllers. It shares functional similarities with other high-voltage regulators but is distinct in its specific pinout and electrical characteristics defined by the RGYR suffix. It serves as a core control element in DC-DC conversion stages.

Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify pin-to-pin compatibility and electrical parameter alignment with any potential replacement parts before implementation.