XC6220A45BQR-G

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

The XC6220A45BQR-G is a fixed positive LDO regulator from the Torex XC6220 series, featuring Green Operation functionality. It provides a nominal output voltage of 4.5V with an accuracy of ±1% for voltages at or above 2.0V. The device supports a maximum output current of 1000mA when the output voltage is between 1.2V and 5.0V. It operates within an input voltage range of 1.6V to 6.0V and includes built-in over-current protection, thermal shutdown, and inrush current prevention circuits. The component utilizes a PDSO8 package.

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 CL auto-discharge capability via an internal N-channel transistor switch for rapid output capacitor discharge upon shutdown.
• Includes an inrush current prevention circuit that limits startup surge current to minimize power supply fluctuations.
• Built-in thermal shutdown and over-current protection circuits ensure safe operation under fault conditions.

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

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

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

Verify the specific suffix 'B' indicates standard configuration with CL auto-discharge but without CE pull-down resistor. Confirm the '-G' suffix denotes compliance with EU RoHS standards and absence of antimony and halogens. Ensure the ordering code matches the required SOT-25 package type and verify the laser-trimmed output voltage tolerance against system requirements.

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

Select this variant for applications requiring a fixed 4.5V output with automatic power management. The Type B designation provides fast output discharge but lacks a fixed pull-down resistor on the CE pin, requiring external logic control. Consider the dropout voltage characteristics at 1000mA loads and ensure ceramic capacitors are used for stability due to the integrated phase compensation circuit.

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

This component belongs to the XC6220 series of 1A CMOS low dropout regulators. The series is characterized by high accuracy, low noise, and large current capabilities. The XC6220A45BQR-G specifically represents the A-type (semi-custom) with B-functionality (CL discharge), offering a fixed 4.5V output in a compact surface-mount package suitable for portable electronic devices.

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

Direct substitutes within the same series include other XC6220 variants with different output voltages or CE configurations, such as XC6220x30BQR-G for 3.0V output. Cross-series replacements require verification of pin compatibility and electrical parameters like dropout voltage and current limits.