XC6221D09AMR-G

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

The XC6221D09AMR-G is a fixed-output low dropout CMOS regulator from Torex Semiconductor, housed in an SOT-25-5 package. It provides a nominal output voltage of 0.90V with a maximum output current of 200mA. The device operates within an input voltage range of 1.6V to 6.0V and features a typical dropout voltage of 80mV at 100mA load. Key electrical parameters include a quiescent current of 25μA, standby current of 0.01μA, and ripple rejection of 70dB at 1kHz. It includes an internal CE pin pull-down resistor and capacitor auto-discharge functionality.

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

• Integrates an internal pull-down resistor on the control enable (CE) pin for defined logic states.
• Features an internal auto-discharge switch that rapidly drains output capacitance when disabled.
• Supports stable operation using low ESR ceramic capacitors as phase compensation elements.
• Incorporates fold-back current limiting and short-circuit protection circuits.

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

• Smart phones
• Portable game consoles
• Digital still cameras
• Mobile devices

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

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm package type, output voltage tolerance, and environmental compliance status. Ensure the selected variant matches the required CE pin configuration and discharge functionality for the target application design.

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

Select this component for applications requiring precise low-voltage regulation with fast transient response. The D-type designation ensures automatic output discharge upon shutdown, which is critical for systems requiring rapid power state transitions or safety isolation.

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 utilizes laser trimming technology for accurate voltage setting and is designed for portable electronics where low power consumption and small footprint are essential design constraints.

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

XC6221D09ANR-G

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

What is the function of the internal pull-down resistor in the XC6221D series?

The internal pull-down resistor connects the CE pin to VSS, ensuring the IC remains in the OFF state if the control signal is left open, preventing undefined operating conditions.

How does the CL auto-discharge feature work in this regulator?

When the CE pin is driven low, an internal N-channel transistor activates, connecting the output capacitor to ground through a discharge resistance to quickly reduce the output voltage to the VSS level.