TPS77515PWPG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments TPS77515PWPG4 is a fixed 1.5 V, 500 mA low-dropout linear voltage regulator with 285 mV typical dropout voltage, accepting 2.7 V to 10 V input. It offers ±2% output accuracy, thermal shutdown, and current limiting in a 20-pin HTSSOP with exposed pad for efficient thermal dissipation.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- TPS77515PWPG4 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TPS77515PWPG4?
- Fixed 1.5 V output with ±2% accuracy for predictable logic and core rail voltage
- 500 mA output current with 285 mV typical dropout for efficient low-headroom regulation
- Input voltage range 2.7 V to 10 V enables use with 3.3 V, 5 V, and 9 V sources
- Exposed pad HTSSOP-20 package for enhanced thermal performance up to 5.79 W dissipation
- Integrated thermal shutdown and current-limit protection for robust fault handling
- Fast transient response suitable for digital processor core voltage supply
What is TPS77515PWPG4 used for?
The TPS77515PWPG4 provides a clean, stable 1.5 V core supply voltage for FPGAs, DSPs, and application processors that require low-noise regulation from 3.3 V or 5 V bus rails in telecommunications, industrial control, and embedded computing systems. Its 500 mA output current and 285 mV dropout voltage make it efficient when the supply-to-output differential is small, such as regulating from a 1.8 V rail to a 1.5 V core. The HTSSOP exposed pad eases thermal management in high-current applications where power dissipation must be conducted to the PCB ground plane.
What are the specifications of TPS77515PWPG4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.41V |
| Dropout Voltage1-Nom | 0.285V |
| Input Voltage Absolute-Max | 13.5V |
| Input Voltage-Max | 10V |
| Input Voltage-Min | 2.7V |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Line Regulation-Max | 0.001095% |
| 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 | 0.5A |
| Output Voltage1-Max | 1.53V |
| Output Voltage1-Min | 1.47V |
| Output Voltage1-Nom | 1.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP20,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| 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 | 0.65mm |
| 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 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the TPS77515PWPG4 datasheet?
TPS77515PWPG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TPS77515PWPG4?
Compatible alternatives and drop-in replacements for TPS77515PWPG4:
Frequently Asked Questions
What is the dropout voltage of the TPS77515PWPG4, and how does it affect use with a 1.8 V input rail?
The TPS77515PWPG4 has a typical dropout voltage of 285 mV and a maximum of 410 mV at 500 mA load. With a 1.8 V input, the minimum usable output is approximately 1.39 V to 1.52 V, meaning it can regulate 1.5 V only when the 1.8 V rail stays above 1.91 V — designers should verify input supply tolerance and load transient headroom before choosing this configuration.
How does the HTSSOP-20 exposed pad of the TPS77515PWPG4 help manage power dissipation in a 5 V to 1.5 V application?
Regulating from 5 V down to 1.5 V at 500 mA dissipates 1.75 W as heat, and the exposed pad on the HTSSOP-20 package reduces junction-to-board thermal resistance to enable the device to handle up to 5.79 W at 25°C. Connecting the exposed pad to a copper pour or ground fill on the PCB is essential; without it, the junction temperature would exceed the 150°C limit at full load in a 5 V application.
For a design powered from a Li-ion battery ranging from 3.0 V to 4.2 V, is the TPS77515PWPG4 a suitable 1.5 V regulator?
Yes, the TPS77515PWPG4 accepts inputs from 2.7 V to 10 V, so the 3.0 V to 4.2 V Li-ion range is fully within spec. At the 3.0 V battery minimum, the 1.5 V output requires only 285 mV typical dropout, giving a 1.215 V margin — well above the dropout threshold — ensuring regulation is maintained across the entire battery discharge cycle from 4.2 V down to the 2.7 V minimum input.
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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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