XC6222B251ER-G

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

The XC6222B251ER-G is a fixed-output low dropout regulator from Torex Semiconductor, providing a nominal output voltage of 2.5V with a maximum continuous output current of 700mA. It operates within an input voltage range of 1.7V to 6.0V and features a typical dropout voltage of 120mV at 300mA load. The device incorporates a Chip Enable (CE) function with an internal pull-down resistor and an auto-discharge switch for the output capacitor. Electrical characteristics include a supply current of 100μA, high ripple rejection of 65dB at 1kHz, and precise output voltage accuracy of ±1% for voltages above 2.0V.

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

• Integrated reverse current protection prevents backflow when output voltage exceeds input voltage.
• Built-in thermal shutdown and over-current limit circuits protect against excessive heat and short circuits.
• Internal auto-discharge switch rapidly pulls the output voltage to ground level upon deactivation.
• Operates stably using standard ceramic capacitors without requiring specific ESR levels.

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

• USB and HDMI interface products
• Optical disk drives
• Magnetic disk drives
• Smart phones and mobile phones
• Portable game consoles

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

Verify that the component matches the USP-6C package configuration and the B-type designation indicating no external CE pull-down resistor but with CL discharge functionality. Confirm the suffix -G indicates compliance with RoHS standards and absence of halogen and antimony. Ensure the ordering code corresponds to the 2.5V fixed output variant within the specified accuracy tolerances.

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

Select this regulator for applications requiring stable power delivery in portable electronics where space is limited. The USP-6C package offers a compact footprint suitable for surface mount assembly. Consider the 120mV dropout characteristic when designing for minimum input voltage headroom. The integrated protection features reduce the need for external safety components.

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

This component belongs to the XC6222 series of high-speed LDO regulators manufactured by Torex Semiconductor. The series is designed for low noise and high ripple rejection performance. The specific model utilizes a P-channel MOSFET driver transistor and includes phase compensation circuitry for stability with ceramic output capacitors.

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

XC6222B251MR-G

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

How does the XC6222B251ER-G handle reverse current flow?

The device includes reverse current protection that suppresses current flow from the VOUT pin to the VIN pin to approximately 1.5μA maximum when the output voltage is higher than the input voltage.

What is the function of the internal auto-discharge switch?

When the CE pin is driven low, the internal auto-discharge switch activates to rapidly discharge the electric charge stored in the output capacitor, pulling the VOUT pin quickly to the VSS level.