XC6220B391PR-G

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

The XC6220B391PR-G is a fixed-output CMOS LDO voltage regulator from Torex Semiconductor, housed in an SOT-89-5 package. It provides a nominal output voltage of 3.9V with a maximum continuous output current of 1A. The device operates within an input voltage range of 1.6V to 6.0V and features Green Operation technology for automatic switching between high-speed and power-save modes. Key electrical characteristics include a typical dropout voltage of 60mV at 300mA, a ripple rejection ratio of 50dB at 1kHz, and a supply current of 50μA in high-speed mode.

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
• Includes built-in CL auto-discharge circuitry for rapid output capacitor discharge when the control pin is deactivated
• Features integrated inrush current prevention circuitry to minimize power supply fluctuations during system startup
• Incorporates overcurrent protection and thermal shutdown circuits to safeguard against excessive load or temperature

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

• Optical disk drives
• Magnetic disk drives
• Digital still cameras and camcorders
• Digital audio equipment

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

Verify that the specific part number suffix matches the required package type (SOT-89-5) and CE pin configuration (Type B). Confirm RoHS compliance status and ensure the ordering quantity aligns with standard reel packaging specifications provided by the manufacturer.

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

Select this component for applications requiring a fixed 3.9V rail with high efficiency under varying loads. Ensure the input voltage remains above the minimum operating threshold and verify that the output capacitor value meets stability requirements for the selected output voltage.

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

This device belongs to the XC6220 series of 1A LDO regulators featuring low dropout performance and high accuracy. The series utilizes laser trimming for precise voltage selection and integrates a P-channel driver transistor with low on-resistance to maximize efficiency and extend battery life in portable electronic systems.

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

XC6220B391ER-G

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

How does the Green Operation function affect the supply current?

The Green Operation function automatically switches the IC between high-speed mode and power-save mode based on the output current level, significantly reducing supply current during light-load conditions.

What is the purpose of the Type B designation in the part number?

The Type B designation indicates that the device includes a CL auto-discharge feature but does not have a CE pull-down resistor.