XC9221A09AMR-G

DC DC Switching Controllers Overview

The XC9221A09AMR-G is a non-isolated buck DC/DC switching controller from Torex Semiconductor. It operates with an input voltage range of 2.8 V to 16 V and delivers a fixed output voltage of 1.2 V at up to 3 A. The device features a high switching frequency of 1 MHz and supports a maximum duty cycle of 100%. Quiescent current is specified at 40 uA. It functions within a temperature range of -40°C to +85°C and is housed in a SOT-25-5 surface-mount package.

DC DC Switching Controllers Feature Summary

• Supports continuous conduction mode with a maximum duty cycle of 100% for low dropout operation
• Integrates a high-speed PWM control loop enabling compact external component sizing
• Designed for multi-purpose step-down applications with fixed voltage regulation

DC DC Switching Controllers Applications

• Portable electronic devices requiring efficient power management
• Battery-powered systems utilizing buck topology
• General purpose step-down DC/DC conversion circuits

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'AMR' corresponds to the required packaging format, such as cut tape or reel, against the distributor's current stock configuration. Confirm that the fixed 1.2 V output aligns with the target load requirements, as adjustable variants exist within the same series. Ensure the SOT-25-5 footprint matches the PCB design constraints before finalizing the order.

DC DC Switching Controllers Selection Notes

Select this component when a fixed 1.2 V output is required without external feedback resistor networks. The 1 MHz switching frequency allows for smaller inductors compared to lower-frequency alternatives. Consider the 40 uA quiescent current for standby efficiency needs. Verify that the 3 A output capability meets the peak load demands of the application circuit.

DC DC Switching Controllers Part Context

This part belongs to the XC9221 series of multi-purpose step-down DC/DC controllers. The series offers various output voltage options and switching frequencies. The XC9221A09AMR-G specifically provides a fixed 1.2 V output with a 1 MHz switching rate, distinguishing it from adjustable or lower-frequency variants in the family.

DC DC Switching Controllers FAQ

Does the XC9221A09AMR-G include internal shutdown functionality?

No, this specific variant does not feature a shutdown pin or function.

Is the output voltage adjustable on this model?

No, the XC9221A09AMR-G provides a fixed 1.2 V output; adjustable versions use different suffixes.