XC6221B442GR-G

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

The XC6221B442GR-G is a fixed-output low dropout regulator from Torex Semiconductor, providing a nominal output voltage of 4.40 V with standard accuracy. It operates within an input voltage range of 1.6 V to 6.0 V and delivers up to 200 mA of output current. The device features a typical dropout voltage of 80 mV at 100 mA load and maintains a low supply current of 25 μA. It utilizes the USP-4 surface-mount package and includes a CE control pin for active-high enable functionality.

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

• Integrates a P-channel MOSFET driver with internal reference voltage source and error amplifier for stable regulation.
• Features CL auto-discharge circuitry that rapidly pulls the output voltage to the ground level upon shutdown.
• Includes fold-back current limiting and short-circuit protection circuits to safeguard against overload conditions.

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 GR-G confirms the USP-4 package configuration and reel quantity. Ensure the B designation matches the required CE pin behavior without an internal pull-down resistor. Confirm RoHS compliance status through official manufacturer documentation before finalizing procurement specifications.

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

Select this component when a fixed 4.40 V rail is required with minimal quiescent current consumption. The USP-4 package offers a compact footprint suitable for space-constrained portable electronics. Verify that the application requires the specific high-level logic threshold characteristics associated with the non-pull-down CE variant.

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

This part belongs to the XC6221 series of high-speed CMOS LDO regulators manufactured by Torex Semiconductor. The series is designed for battery-powered applications requiring fast transient response and low noise. The XC6221B variant specifically denotes a regulator type without an internal CE pin pull-down resistor but with integrated output capacitor discharge capabilities.

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

XC6221B442MR-G (SOT-25 package)

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

How does the XC6221B442GR-G handle output discharge during shutdown?

The device incorporates a CL auto-discharge function that activates when the CE pin is driven low, rapidly discharging the output capacitor charge to the VSS level via an internal N-channel transistor.

What is the logic requirement for the CE pin on this specific model?

The XC6221B series lacks an internal pull-down resistor on the CE pin. Therefore, the pin must be actively driven high to enable operation or pulled low to disable it; leaving it open may result in undefined states.