XC6221B35ANR-G

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

The XC6221B35ANR-G is a fixed-output CMOS low-dropout regulator from Torex Semiconductor, delivering a nominal output voltage of 3.50V with a maximum load current of 200mA. It operates within an input voltage range of 1.6V to 6.0V and features a typical dropout voltage of 80mV at 100mA load. The device incorporates a CE control pin without an internal pull-down resistor and includes an internal auto-discharge circuit for the output capacitor. It provides high ripple rejection and maintains stable operation using low ESR ceramic capacitors.

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

• Integrates an internal auto-discharge switch that rapidly pulls the output voltage to ground when the enable signal is deactivated.
• Features a fold-back current limiter that acts as short-circuit protection by reducing output current during overload conditions.
• Supports phase compensation using standard low ESR ceramic capacitors for stable operation 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 package type against the ordering suffix to ensure correct physical dimensions and mounting requirements. Confirm that the laser-trimmed output voltage matches the target design specification exactly. Ensure the system design accounts for the absence of an internal pull-down resistor on the CE pin to prevent undefined states during power-up or shutdown phases.

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

Select this variant specifically for its integrated output capacitor discharge capability, which accelerates voltage decay upon shutdown. Choose this part over variants lacking auto-discharge if rapid power-off response is required. Verify that the required output voltage falls within the valid range for the selected package configuration.

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

This component belongs to the XC6221 series of high-accuracy, low-noise LDO regulators designed for portable electronics. The series utilizes laser trimming technology to set output voltages in precise increments. The 'B' designation indicates the inclusion of an auto-discharge function without an internal pull-down resistor on the control pin.

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

XC6221B35ANR

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

How does the XC6221B series differ from the XC6221A series regarding shutdown behavior?

The XC6221B series includes an internal auto-discharge switch that actively discharges the output capacitor when the CE pin is low, whereas the XC6221A series relies solely on internal resistors for discharge.

What is the recommended output capacitor type for this regulator?

The datasheet specifies compatibility with low ESR ceramic capacitors for phase compensation and stable operation.