RT9123GQW-2C

Overview

The RT9123GQW-2C is a low-dropout (LDO) voltage regulator manufactured by Richtek USA Inc. It provides a fixed output voltage of 2.5V with a maximum load current capability of 150mA. The device operates from an input voltage range up to 6V and features ultra-low quiescent current consumption, typically around 40µA, which ensures high efficiency even under light load conditions. It incorporates internal protection mechanisms including thermal shutdown and current limiting to safeguard against overload and overheating scenarios. The component is housed in a compact WLCSP package, facilitating space-constrained designs.

Feature Summary

• Ultra-low quiescent current for enhanced power efficiency
• Integrated thermal shutdown and current limit protection
• Fixed 2.5V output voltage option
• Compact WLCSP packaging for small form factor applications

Applications

• Portable consumer electronics requiring low noise power supplies
• Battery-powered devices needing extended operational life
• Embedded systems with strict space limitations

Procurement Notes

Verify the specific suffix '2C' against the official Richtek datasheet to confirm pinout compatibility and electrical specifications. Ensure the ordering code matches the exact package type and temperature grade required for your design. Cross-reference with authorized distributors to validate part authenticity and avoid counterfeit components.

Selection Notes

Select this LDO when a stable 2.5V rail is needed with minimal static power draw. Consider its 150mA output capacity against your peak load requirements. Evaluate the WLCSP footprint against your PCB layout constraints. Compare dropout voltage characteristics at expected load currents to ensure regulation stability.

Part Context

This component belongs to Richtek's series of low-noise, low-quiescent current LDO regulators designed for portable applications. It complements other fixed-output variants in the family, offering a balance between performance and size. The product line targets markets demanding high efficiency and reliable voltage regulation in compact electronic devices.

Replacement Considerations

Check for pin-compatible alternatives within the same manufacturer's portfolio that offer similar output voltage and current ratings. Verify if other packages provide equivalent electrical performance for your specific board layout needs.