XC6220D42BQR-G

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

The XC6220D42BQR-G is a CMOS low dropout regulator from Torex Semiconductor, featuring Green Operation for automatic switching between high speed and power save modes. It provides a fixed output voltage of 4.2V with an operating input voltage range of 1.6V to 6.0V. The device supports up to 1A output current and includes built-in thermal shutdown, over-current protection, and inrush current prevention circuits. It utilizes a SOT-89-5 package.

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

• Green Operation function automatically switches between high speed and power save modes based on load current.
• Built-in CL auto-discharge circuit rapidly discharges the output capacitor when the control pin is deactivated.
• Integrated inrush current prevention circuit limits startup surge current to minimize power supply fluctuations.

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 the specific suffix 'D' indicates the inclusion of both CE pull-down resistor and CL auto-discharge features. Confirm the 'QR' designation corresponds to the SOT-89-5 package type. Ensure compatibility with ceramic output capacitors as specified in the datasheet requirements for stable phase compensation.

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

Select this variant for applications requiring rapid output discharge upon shutdown. The D-type configuration ensures defined logic states via the internal pull-down resistor. Verify that the required 4.2V output aligns with system voltage rails and that the SOT-89-5 package accommodates the thermal dissipation needs of the target design.

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

This component belongs to the XC6220 series of 1A LDO regulators. The series is characterized by high accuracy, low noise, and ultra-low dropout performance. It integrates a voltage reference, error amplifier, and driver transistor within a compact CMOS structure designed for battery-powered portable electronics.

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

XC6220D42BMR-G (SOT-25 package)

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

How does the Green Operation function affect power consumption?

It automatically switches the IC between high speed mode for heavy loads and power save mode for light loads, significantly reducing supply current during low demand periods.

What is the purpose of the CL auto-discharge feature in the D-series?

It connects an N-channel transistor switch to discharge the output capacitor quickly when the IC is turned off, shortening the time for the output voltage to reach the ground level.