TPS51123RGER

Overview

The TPS51123RGER is a dual-synchronous step-down controller manufactured by Texas Instruments, designed for notebook system power applications. It features an out-of-audio operation mode and includes two integrated 100-mA low-dropout regulators (LDOs). The device operates with a switching frequency range of 200 kHz to 460 kHz and supports output voltages from 2 V to 5.5 V. It is rated for an output current of up to 20 A when paired with external MOSFETs. The component functions within a temperature range of -40°C to +85°C and is housed in a 24-pin VQFN package.

Feature Summary

• Dual synchronous buck control architecture for high-efficiency voltage regulation
• Integrated out-of-audio operation mode to minimize audible noise
• Two built-in 100-mA LDOs for auxiliary power supply generation

Applications

• Notebook system power distribution
• Multi-rail voltage regulation for portable computing devices
• Auxiliary power supply generation via integrated LDOs

Procurement Notes

Verify the specific suffix RGER confirms the reel packaging format upon ordering. Ensure compatibility with the required PCB footprint for the 24-VQFN package. Confirm that the design utilizes external MOSFETs suitable for the specified 20 A output current capability. Check for any recent product change notices regarding pin definitions or material composition updates.

Selection Notes

Select this component for designs requiring dual independent buck outputs with integrated linear regulators. It is suitable for space-constrained portable electronics where audible noise reduction is critical. Consider the 24-VQFN package size against available board real estate. Ensure the input voltage range aligns with the system's power source requirements.

Part Context

This part belongs to the TPS5112x family of dual-synchronous step-down controllers from Texas Instruments. The family is optimized for notebook and mobile computing applications. Other variants in the series may differ in LDO specifications or operating temperature ranges. The RGER suffix typically denotes tape and reel packaging for automated assembly processes.

Replacement Considerations

Publicly confirmed substitute part numbers include TPS51123RGET and TPS51123ARGET. These alternatives share the same functional description and pinout configuration. Verify package compatibility and electrical parameter equivalence before substitution.