XC9265B191MR-G

Voltage Regulators - DC DC Switching Regulators Overview

The XC9265B191MR-G is an ultra-low power synchronous step-down PFM DC/DC converter manufactured by Torex Semiconductor. It operates within an input voltage range of 2 V to 6 V and provides a fixed output voltage of 1.9 V. The device supports a maximum output current of 50 mA with a typical quiescent current of 500 nA. It utilizes a SOT-25-5 package and functions reliably across a temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification architecture utilizing built-in Pch driver and Nch switching transistors for high efficiency.
• PFM control mechanism enables ultra-low quiescent current consumption suitable for battery-operated applications.
• Designed for ceramic capacitor usage, minimizing the requirement for external components.

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered portable electronic devices requiring extended operational life.
• Low-power consumer electronics utilizing single-cell lithium-ion or lithium-polymer batteries.
• Embedded systems operating within the specified 2V to 6V input voltage window.

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific output voltage code (191 indicating 1.9V) and package type (SOT-25-5) against design requirements. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure thermal management aligns with the -40°C to +85°C operating temperature specifications for the target application environment.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.9V output is required from a 2V to 6V source with limited current demands up to 50mA. The SOT-25-5 package offers a compact footprint for space-constrained designs. Consider the 500 nA quiescent current for standby performance optimization in battery-sensitive projects.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the XC9265 series of ultra-low power synchronous step-down converters. The 'B' suffix typically denotes specific output current capabilities or package variations within the family compared to other variants like the 'A' series. It shares core PFM control and low-power characteristics with the broader XC9265 lineup.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include XC9265A191MR-G for higher current capability or XC9265B181MR-G/XC9265B201MR-G for alternative fixed voltages within the same package and current class. Verify pin compatibility and electrical parameters before substitution.