XC6220C251PR-G

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

The XC6220C251PR-G is a fixed positive LDO regulator from Torex Semiconductor, featuring Green Operation technology. It provides a nominal output voltage of 2.5V with an accuracy of ±1% for voltages at or above 2.0V. The device operates within an input voltage range of 1.6V to 6.0V and supports a maximum output current of 1A. It utilizes a SOT-89-5 package and includes built-in thermal shutdown and over-current protection circuits.

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

• Integrates Green Operation function to automatically switch between high speed and power save modes based on load conditions.
• Features a CE pin with an internal pull-down resistor that forces the IC into standby mode when the input is open.
• Includes an inrush current prevention circuit to minimize power supply fluctuations during system startup.
• Built-in phase compensation allows stable operation using low ESR ceramic capacitors.

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

• Optical disk drives
• Magnetic disk drives
• Digital still cameras
• Camcorders
• Digital audio equipment

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

Verify the specific suffix 'C' indicates the presence of a CE pull-down resistor and absence of CL auto-discharge. Confirm the 'PR-G' designation corresponds to the SOT-89-5 package format. Ensure compliance requirements match EU RoHS standards and halogen-free specifications as indicated by the '-G' suffix.

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

Select this variant when a fixed 2.5V output is required alongside automatic power management features. The integrated pull-down resistor simplifies control logic by ensuring a defined off-state without external components. Verify that the application environment remains within the specified -40°C to +85°C operating temperature range.

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

This component belongs to the XC6220 series of 1A CMOS LDO regulators designed for battery-powered portable electronics. The series emphasizes extended battery life through ultra-low dropout performance and efficient power saving capabilities. It is engineered for applications requiring stable, low-noise power supplies in compact form factors.

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

XC6220B251PR-G (lacks CE pull-down resistor)

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

How does the CE pin behave when left unconnected?

Due to the internal pull-down resistor, the CE pin defaults to a low level, placing the IC in standby mode when the pin is open.

What is the purpose of the Green Operation function?

It automatically switches the regulator between high speed and power save modes to optimize efficiency under varying load currents.