TPS73718DCQRG4

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

The TPS73718DCQRG4 is a fixed-output linear low-dropout (LDO) voltage regulator from the Texas Instruments TPS737xx family. It provides a fixed 1.8V output with a maximum load current of 1A. The device supports an input voltage range up to 5.5V and operates within a junction temperature range of -40°C to 125°C. Key electrical specifications include a typical quiescent current of 400 µA, a maximum dropout voltage of 0.5V at full load, and power supply rejection ratios ranging from 58dB at 100Hz to 37dB at 10kHz. It utilizes an NMOS pass element for efficient regulation.

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

• NMOS topology delivers ultralow dropout voltage and excellent load transient response even with small ceramic capacitors
• Integrated thermal shutdown and foldback current limit provide robust fault protection
• Low shutdown current consumption below 20 nA ensures energy efficiency in portable applications

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

• Point-of-load regulation for digital signal processors (DSPs)
• Power supply for field-programmable gate arrays (FPGAs)
• Voltage regulation for application-specific integrated circuits (ASICs)

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

Verify component authenticity through authorized channels as counterfeit risks exist. Confirm package marking matches official datasheet standards. Check RoHS compliance status against specific manufacturing dates. Validate that the RG4 suffix corresponds to the correct environmental and packaging specifications required for your assembly process.

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

Select this regulator when a stable 1.8V rail is required for high-current digital loads. The NMOS architecture allows flexibility in output capacitor selection compared to PMOS alternatives. Ensure input voltage remains within the 5.5V absolute maximum rating. Consider the 400 µA quiescent current impact on overall system efficiency during active operation phases.

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

This component belongs to the TPS737xx series of 1-A LDO regulators featuring NMOS pass elements. The family offers various fixed and adjustable output voltages. The DCQR package denotes a SOT-223-6 surface-mount configuration. This series is designed for applications requiring low noise and high line/load regulation performance.

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

TPS73718DCQ is a documented equivalent part number within the same product family.