XC6221D42ANR-G

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

The XC6221D42ANR-G is a fixed-output linear voltage regulator manufactured by Torex Semiconductor Ltd. It provides a nominal output voltage of 4.25V with a maximum continuous 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. It incorporates a CE control pin with an internal pull-down resistor and includes an auto-discharge function for the output capacitor during standby mode. The unit is housed in an SSOT-24 package.

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

• Integrates an internal auto-discharge switch that rapidly pulls the output voltage to ground level when the enable signal is deactivated.
• Features an active-high CE control pin equipped with an internal pull-down resistor to ensure a defined off-state without external components.
• Utilizes laser trimming technology to achieve precise factory-set output voltage accuracy across the operating temperature range.

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 suffix 'NR-G' corresponds to the SSOT-24 package and reel order quantity. Confirm the 'D' designation indicates the presence of both the CE pull-down resistor and the CL auto-discharge circuit. Ensure compatibility with low ESR ceramic capacitors as specified in the datasheet requirements.

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

Select this variant specifically for applications requiring the output capacitor discharge feature upon shutdown. The internal pull-down resistor on the CE pin simplifies board layout by preventing undefined states if the control line is left floating. Verify that the required output voltage of 4.25V matches the available laser-trimmed options.

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

This component belongs to the XC6221 series of high-speed, low-noise CMOS regulators. The series is characterized by low power consumption and high ripple rejection capabilities. The D-type designation within the product classification denotes specific internal circuitry including the CE pull-down resistor and auto-discharge functionality.

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

XC6221A42ANR-G

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

How does the XC6221D42ANR-G handle the output voltage when the CE pin is set to low?

The device activates an internal N-channel transistor connected via an auto-discharge resistance (RDCHG). This discharges the electric charge stored in the output capacitor, causing the VOUT pin to quickly return to the VSS level.

What is the function of the internal pull-down resistor on the CE pin?

The internal pull-down resistor ensures that the IC remains in the OFF state if the CE pin is left open or disconnected, preventing undefined operation or unintended startup.