TPS76815QPWPR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
TPS76815QPWPR is an automotive-grade fixed 1.5 V, 1 A low-dropout linear regulator with power-good and enable pins, operating from a 2.7 V to 10 V input with only 230 mV dropout at full load. Packaged in a 20-pin HTSSOP with exposed thermal pad, it targets automotive and industrial processor core supply rails.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- TPS76815QPWPR Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 1.5 V regulated output at 1 A load current
- 230 mV ultra-low dropout voltage minimizes input headroom requirement
- 2.7 V to 10 V wide input voltage range with 13.5 V absolute maximum
- Power-good indicator for sequencing and fault monitoring
- Enable pin for controlled power-up and sequencing
- 20-pin HTSSOP exposed-pad package for low thermal resistance
- AEC-Q100 automotive qualification across -40°C to 125°C
Applications
TPS76815QPWPR powers processor cores, memory modules, and FPGA I/O banks requiring a regulated 1.5 V supply in automotive infotainment and ADAS systems. The power-good output integrates directly with supervisory circuits to enforce proper power-on sequencing for multi-rail SoC designs. Industrial PLC and communication equipment also use this LDO where tight 1.5 V accuracy and low dropout from a 3.3 V or 5 V intermediate bus are needed.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.23V |
| Dropout Voltage1-Nom | 0.23V |
| 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 | 1A |
| 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 |
| Packing Method | TR |
| 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 (Ni/Pd/Au) |
| 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 | 8542.39.00.90 |
| Country of Origin | Mainland China, Philippines, Taiwan |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does TPS76815QPWPR's power-good pin aid multi-rail power sequencing in automotive SoC designs?
The power-good open-drain output asserts high when the 1.5 V output rises above approximately 90 percent of its nominal value. A system supervisor or sequencer IC monitors this signal to delay enabling downstream rails until the processor core supply is stable. This prevents latch-up or undefined logic states in SoCs requiring strict core-before-I/O sequencing, which is critical in automotive ADAS processors operating at -40°C to 125°C.
What is the minimum input voltage TPS76815QPWPR needs to maintain a regulated 1.5 V output at 1 A?
With a 230 mV maximum dropout voltage at 1 A, the minimum input required is 1.73 V to keep the output in regulation. In practice, designers use a 2.7 V minimum input specification for full accuracy, providing over 1 V of headroom above the dropout limit. On a 3.3 V post-buck rail, TPS76815QPWPR delivers the full 1 A at 1.5 V with more than 1.5 V of margin, well within the 10 V maximum input rating.
For a 1 A load on TPS76815QPWPR, how much power does the exposed-pad HTSSOP package need to dissipate?
At 1 A from a 3.3 V input to a 1.5 V output, the dissipated power is approximately 1.8 V times 1 A equaling 1.8 W. The 20-pin HTSSOP exposed thermal pad connects directly to a PCB copper pour, achieving junction-to-board thermal resistance of around 15°C/W, limiting junction temperature rise to 27°C above board temperature. This keeps the device well within its 125°C maximum junction rating at typical 85°C ambient automotive conditions.
Can TPS76815QPWPR replace TPS76715QPWPG4 in an existing board design without layout changes?
Both devices are 1.5 V fixed LDOs in the same 20-pin HTSSOP package with identical pinouts, the same 1 A output, 230 mV dropout, and 2.7 V to 10 V input range. TPS76815QPWPR adds a power-good output pin that TPS76715QPWPG4 does not have, so replacing TPS76715QPWPG4 with TPS76815QPWPR requires only adding a pull-up resistor on the power-good pin and an optional trace to the supervisory circuit. No other PCB changes are needed.
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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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