XC6221D372GR-G

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

The XC6221D372GR-G is a fixed-output low dropout regulator from Torex Semiconductor, providing a nominal output voltage of 3.70V with a standard accuracy tolerance of ±2%. It supports a maximum continuous output current of 200mA and operates within an input voltage range of 1.6V to 6.0V. The device features a typical dropout voltage of 80mV at 100mA load and maintains a low quiescent supply current of 25μA. It utilizes the USP-4 surface-mount package and includes an internal pull-down resistor on the control enable pin.

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

• Integrated CE pin with internal pull-down resistor for defined shutdown states
• Internal auto-discharge switch rapidly pulls output voltage to ground level upon shutdown
• Fold-back current limiting circuit provides short-circuit protection and output current regulation
• Compatible with low ESR ceramic capacitors for stable phase compensation

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

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

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

Verify the specific ordering suffix GR-G confirms the USP-4 package configuration. Ensure the D designator matches requirements for the internal CE pull-down resistor and CL auto-discharge functionality. Confirm RoHS compliance status via official manufacturer documentation before finalizing procurement specifications.

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

Select this component when a fixed 3.70V rail is required with minimal footprint constraints. The D-type designation is necessary if automatic output discharge during standby is needed. Verify that the 200mA current capability meets peak load demands while maintaining operation within the specified thermal dissipation limits for the USP-4 package.

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

This part belongs to the XC6221 series of high-speed, low-noise CMOS regulators. The series offers selectable output voltages in precise increments using factory laser trimming technology. It integrates a reference voltage source, error amplifier, and phase compensation circuitry into a compact form factor suitable for space-constrained portable electronics.

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

XC6221C372GR-G

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

How does the XC6221D372GR-G handle output discharge during standby?

The device features an internal auto-discharge switch connected between the VOUT and VSS pins. When the CE pin is driven low, this switch activates to rapidly discharge the output capacitor, pulling the output voltage down to the VSS level.

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

The internal pull-down resistor ensures the IC remains in the OFF state if the CE pin is left open or floating. This prevents undefined states and potential shoot-through currents that could occur with other variants lacking this feature.