TPS77718DG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
TPS77718DG4 is a fixed 1.8 V low-dropout linear voltage regulator from Texas Instruments, delivering 750 mA output current with a 427 mV maximum dropout voltage and ±2% output accuracy. It accepts an input voltage from 2.7 V to 10 V and provides excellent line regulation of 0.001314% for sensitive analog and digital loads. Packaged in an 8-pin SOIC, it is used in portable electronics, DSP cores, and microcontroller power rails.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- TPS77718DG4 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 1.8 V output with ±2% accuracy for precision digital loads
- 750 mA output current with 427 mV maximum dropout voltage
- Input voltage range 2.7 V to 10 V, absolute maximum 13.5 V
- Excellent line regulation of 0.001314% for stable analog supply rails
- Low-power 8-pin SOIC (R-PDSO-G8) package
- RoHS-compliant lead-free construction
Applications
TPS77718DG4 is designed to power 1.8 V digital logic cores in microcontrollers, FPGAs, and DSPs from 3.3 V or 5 V system supply rails, where a clean and precise voltage is critical for reliable operation. Its excellent line regulation and low noise characteristics also make it suitable for powering mixed-signal ICs, RF transceivers, and sensor interface circuits that require a stable 1.8 V reference supply in portable and industrial electronics.
Specifications
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.427V |
| Dropout Voltage1-Nom | 1V |
| Input Voltage Absolute-Max | 13.5V |
| Input Voltage-Max | 10V |
| Input Voltage-Min | 2.7V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Line Regulation-Max | 0.001314% |
| Load Regulation-Max | 0.003% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.75A |
| Output Voltage1-Max | 1.836V |
| Output Voltage1-Min | 1.764V |
| Output Voltage1-Nom | 1.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | PMOS |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 2% |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPS77718DG4:
Frequently Asked Questions
How accurate is the 1.8 V output of TPS77718DG4 and why does precision matter for digital core supplies?
TPS77718DG4 provides a fixed 1.8 V output with ±2% accuracy, meaning the output stays between 1.764 V and 1.836 V across line, load, and temperature variations. Modern FPGAs and DSPs typically require their core voltage to remain within ±5% of nominal, so the ±2% tolerance of this device provides substantial margin, reducing the risk of logic errors or reset events caused by supply voltage excursions during load transients.
What is the dropout voltage of TPS77718DG4 and when does it become a limiting factor in battery-powered designs?
TPS77718DG4 has a maximum dropout voltage of 427 mV, which means the input supply must be at least 2.227 V to maintain a regulated 1.8 V output. In single-cell lithium-ion battery applications where the cell voltage can drop to 3.0 V at end of discharge, the 427 mV dropout still allows regulation, but as the cell approaches 2.2 V the LDO exits regulation—designers should plan the system low-battery cutoff accordingly.
How does TPS77718DG4 perform in mixed-signal designs where both analog and digital 1.8 V loads share the same rail?
With a line regulation specification of 0.001314% and a fixed 1.8 V output, TPS77718DG4 maintains a highly stable supply even when shared between digital switching loads and noise-sensitive analog circuits such as ADC reference buffers or RF front-end amplifiers. Proper bypass capacitor placement—typically 1 µF or larger at the output pin—further reduces high-frequency ripple coupling from the digital subsystems into the analog circuits.
Does TPS77718DG4 require external components for stable operation, and what capacitor values are recommended?
TPS77718DG4 requires an output bypass capacitor of at least 1 µF with an ESR below 1 Ω for stability; a 10 µF ceramic capacitor at the output is a common design choice that ensures phase margin across the 750 mA load range from 2.7 V to 10 V input. An input bypass capacitor of 1 µF to 10 µF is also recommended close to the VIN pin to suppress supply noise, particularly when the input trace is long or the upstream regulator has high impedance.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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