XC6221B27ANR-G

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The XC6221B27ANR-G is a fixed-output CMOS low dropout regulator manufactured by Torex Semiconductor. It provides a nominal output voltage of 2.7V with a standard accuracy of ±2% for voltages above 1.50V. The device supports a maximum output current of 200mA and operates within an input voltage range of 1.6V to 6.0V. It features a typical supply current of 25μA and standby current of 0.01μA. The regulator utilizes the SSOT-24 package and includes a CE control pin without an internal pull-down resistor, alongside capacitor load auto-discharge functionality.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Integrates CL auto-discharge circuitry to rapidly reduce output voltage upon shutdown
• Operates with low power consumption via 25μA supply current in active mode
• Provides high ripple rejection performance at 1kHz frequencies
• Compatible with low ESR ceramic capacitors for phase compensation

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Smart phones and mobile phones
• Portable game consoles
• Digital still cameras and camcorders
• Mobile devices and terminals

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific ordering suffix NR-G confirms the SSOT-24 package configuration. Ensure the B-type designation matches requirements for the integrated capacitor load auto-discharge feature. Confirm the absence of an internal CE pin pull-down resistor aligns with the system logic design. Validate that the 2.7V fixed output meets the target application voltage needs.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 2.7V rail is required with minimal quiescent current draw. The inclusion of the auto-discharge function makes it suitable for battery-powered applications requiring rapid power-off states. Verify that the operating temperature range of -40℃ to 85℃ covers the environmental conditions. Ensure the input voltage remains within the specified 1.6V to 6.0V limits during all operational phases.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the XC6221 series of high-speed, low noise LDO regulators. The series offers various output voltages selectable in 0.05V increments. Different suffixes denote variations in package type and CE pin configurations. The B-type specifically indicates the presence of the CL auto-discharge switch without an internal pull-down resistor on the control pin.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

XC6221B27MR-G (SOT-25 package)

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

How does the XC6221B27ANR-G handle output discharge during shutdown?

It utilizes an internal N-channel transistor and auto-discharge resistance to actively drain charge from the output capacitor when the CE pin is set to a low level.

What is the behavior of the CE pin if left open?

Because this variant lacks an internal pull-down resistor, leaving the CE pin open results in an undefined state and potential instability; it must be driven high or low explicitly.