LM5166YDRCT

Voltage Regulators - DC DC Switching Regulators Overview

The LM5166YDRCT is a synchronous buck converter from Texas Instruments, designed for high-efficiency power management. It features a wide input voltage range of 3 V to 65 V and delivers up to 500 mA output current. The device operates with a fixed switching frequency of 600 kHz and provides a fixed 3.3 V output. Key electrical parameters include a quiescent current of 9.7 uA and an operating supply current of 320 uA. It supports shutdown functionality and functions within a temperature range of -40°C to +150°C. The component is housed in a VSON-EP-10 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck topology for enhanced efficiency
• Wide input voltage capability up to 65 V
• Ultra-low no-load supply current design
• Integrated shutdown control pin

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial sensor power supplies
• Building automation systems
• Connected LED lighting circuits
• Power over Ethernet (PoE) intermediate bus conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'CT' indicates Cut Tape packaging when ordering. Confirm the 'Y' grade corresponds to the required industrial temperature specifications. Ensure the VSON-EP-10 footprint matches the PCB layout constraints. Cross-reference the datasheet for thermal pad connection requirements to ensure proper heat dissipation during operation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this model for applications requiring a fixed 3.3 V output from high-voltage inputs. The 500 mA current rating suits low-power loads. Consider the 600 kHz frequency for balancing size and efficiency. The VSON-EP-10 package offers a compact solution for space-constrained designs. Verify compatibility with existing thermal management strategies due to the exposed pad requirement.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM5166 series of wide-input synchronous buck converters. It shares architectural similarities with the LM5165 but differs in output current capabilities. The YDRCT designation specifies the industrial grade, cut-tape packaging, and VSON-EP-10 form factor. It is distinct from automotive-qualified variants like the LM5165XQ.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM5166YDRCR serves as the reel-packaged alternative with identical electrical characteristics. LM5166XDRCR offers a 5 V fixed output option within the same series. For adjustable output requirements, consider the LMR516xx family, though pinouts and control schemes may differ.