XC9265D121MR-G

Voltage Regulators - DC DC Switching Regulators Overview

The XC9265D121MR-G is a synchronous step-down DC/DC converter from Torex Semiconductor, operating in PFM mode. It provides a fixed 1.2 V output with a maximum current of 50 mA. The device accepts an input voltage range of 2 V to 6 V and maintains a typical quiescent current of 500 nA. It functions within a temperature range of -40°C to +85°C. Packaged in a compact SOT-25-5 format, this regulator integrates high-side and low-side driver FETs for efficient power management without requiring external shutdown control.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates built-in high-side and low-side driver FETs for synchronous rectification
• Operates in Pulse Frequency Modulation (PFM) mode for optimized efficiency at light loads
• Features ultra-low quiescent current consumption for extended battery life
• Designed for surface-mount installation in space-constrained applications

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered portable electronic devices
• Wearable technology and health monitoring equipment
• IoT sensor nodes and wireless communication modules
• Low-power microcontroller system power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix MR-G against official Torex documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with your PCB footprint for the SOT-25-5 package. Cross-reference the D121 designation to confirm the 1.2 V fixed output voltage matches your circuit requirements before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.2 V rail is required from a 2–6 V source with minimal standby current. The 50 mA output limit suits low-power logic circuits rather than high-current loads. Consider the SOT-25-5 package constraints for thermal dissipation and layout density compared to larger packages in the XC9265 series.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the XC9265 series of ultra-low power switching regulators. The series offers various fixed output voltages and package options, including USP-EL-EP-6 and SOT-25-5. The XC9265D variant specifically denotes the SOT-25-5 package configuration, distinguishing it from other pinout or thermal designs within the same electrical family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

XC9265D1214R-G: Same electrical specifications but housed in a USP-EL-EP-6 package instead of SOT-25-5. Verify footprint compatibility if substituting.