TPS51123RGET

Overview

The TPS51123RGET is a Texas Instruments PMIC featuring two dual-synchronous step-down controllers and two 100-mA low-dropout regulators (LDOs). It operates from an input voltage range of 5.5V to 28V with a switching frequency of 460kHz. The device utilizes D-CAP™ topology for stability across all output capacitance values. It includes out-of-audio operation to minimize audible noise and supports positive output configurations in a 24-VQFN package rated for -40°C to 85°C.

Feature Summary

• Integrates dual synchronous buck controllers and dual LDOs for comprehensive system power management
• Employs D-CAP™ control topology ensuring stable operation with various output capacitor types
• Features out-of-audio mode to reduce electromagnetic interference and audible switching noise

Applications

• Notebook computer system power distribution
• Portable electronic devices requiring multi-rail power sequencing
• Industrial equipment with mixed analog and digital power requirements

Procurement Notes

Verify the specific suffix 'RGET' corresponds to the 24-VQFN package and commercial temperature grade during sourcing. Confirm RoHS compliance status as per the latest manufacturer documentation, noting that G4 suffixes may indicate lead-free variants. Ensure the ordering part number matches the exact pin configuration and thermal pad requirements for your PCB layout design.

Selection Notes

Select this component when designing systems requiring integrated buck and LDO regulation within a compact footprint. The D-CAP™ topology simplifies compensation compared to traditional current-mode controllers. Consider the 460kHz switching frequency for balancing efficiency and passive component size. Verify that the input voltage range up to 28V aligns with your system's supply rails.

Part Context

This device belongs to the TPS5112x family of notebook power management ICs. It shares functional similarities with the TPS51125 and TPS51123ARGER but differs in package type and specific suffix designations. The RGET variant specifically denotes the tape-and-reel packaging format within the 24-VQFN enclosure, distinguishing it from tray or other reel options.

Replacement Considerations

Direct substitutes include TPS51123RGERG4 and TPS51125RGETG4. Verify pin-to-pin compatibility and electrical parameter alignment before substitution. Cross-reference datasheets to ensure equivalent thermal performance and control loop characteristics.