TPS77618DRG4

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

The TPS77618DRG4 is a fixed-output low-dropout voltage regulator from the TPS776xx family, manufactured by Texas Instruments. It provides a nominal output voltage of 1.8V with a maximum continuous output current of 500mA. The device operates within an input voltage range of 2.7V to 10V and features a typical dropout voltage of 169mV at full load. Quiescent current is typically 85µA, reducing to 1µA in standby mode via the enable pin. It includes an open-drain power-good (PG) output with a 200ms delay. Protection features include thermal shutdown and internal current limiting. The component is housed in an 8-pin SOIC package.

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

• Fast transient response capability designed for stability with low ESR capacitors
• PMOS pass element architecture ensures low quiescent current independent of load
• Integrated open-drain power-good signal for system status monitoring
• Built-in thermal shutdown and current limiting protection mechanisms

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

• FPGA core and I/O voltage regulation
• DSP core and peripheral power supplies
• Microprocessor and microcomputer system reset circuits
• Low-battery indicator implementations

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

Verify the specific suffix 'G4' indicates lead-free and RoHS compliance as per manufacturer standards. Confirm the package type matches the required PCB footprint. Ensure the ordering code corresponds to the reel quantity if tape-and-reel packaging is needed for automated assembly. Cross-reference the datasheet revision date to ensure compatibility with latest design guidelines.

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

Select this component when a stable 1.8V rail is required for digital logic or analog circuits. The fast transient response makes it suitable for systems with rapidly changing load profiles. The inclusion of the power-good signal simplifies system initialization sequencing. Verify that the input voltage remains above the minimum requirement plus the dropout voltage under all operating conditions.

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

This device belongs to the TPS77x family of low-dropout regulators, which are characterized by their PMOS pass transistors and fast transient response. The TPS776xx variant specifically adds a power-good output compared to the TPS775xx RESET version. These regulators are designed to offer high performance at a reasonable cost, making them common choices for general-purpose power management in portable and battery-operated electronics.

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

TPS77618DR is the direct non-green equivalent part number.