XC6221C372GR-G

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

The XC6221C372GR-G is a fixed-output low dropout regulator from Torex Semiconductor, providing a nominal output voltage of 3.70V with a standard accuracy of ±2%. It operates within an input voltage range of 1.6V to 6.0V and delivers a maximum output current of 200mA. The device features a typical supply current of 25μA and standby current of 0.01μA. It utilizes a USP-4 package and includes an internal CE pin pull-down resistor for defined shutdown states.

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

• Integrated enable control with internal pull-down resistor for stable off-state logic
• Capable of discharging output capacitor charge via internal auto-discharge switch during shutdown
• Designed for high ripple rejection performance using low ESR ceramic capacitors

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 'GR-G' corresponds to the USP-4 package format as indicated in the datasheet ordering information. Confirm that the 'C' designation matches the requirement for an internal CE pin pull-down resistor. Ensure compliance with EU RoHS standards and halogen-free specifications associated with the '-G' suffix before finalizing procurement.

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

Select this component when a fixed 3.70V rail is required with minimal quiescent current consumption. The internal pull-down resistor on the CE pin simplifies interface design by preventing undefined states if the control signal is left floating. Verify that the application load does not exceed the 200mA maximum output current rating under all operating temperature conditions.

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

This part belongs to the XC6221 series of high-speed, low-noise CMOS LDO regulators. The series offers selectable output voltages in precise increments and supports various package options including USP-4, SOT-25, SSOT-24, and USPN-4. It is engineered for portable electronics requiring efficient power management and fast transient response capabilities.

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

XC6221C372GR-M (SOT-25 Package)

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

How does the XC6221C372GR-G handle the output voltage when the CE pin is pulled low?

When the CE pin is driven low, the IC enters standby mode. Due to the internal CL auto-discharge circuitry characteristic of the 'C' type, the electric charge stored in the output capacitor is actively discharged, 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 CE pin defaults to a low logic state if it is left open or unconnected. This prevents the regulator from accidentally turning on due to noise or floating signals, thereby maintaining a safe off-state.