TPS78518BQWDRBRQ1 Texas Instruments Integrated Circuit (Other) In Stock
The TPS78518BQWDRBRQ1 is an automotive-grade 1 A fixed LDO linear regulator with 315 mV nominal dropout voltage and 2.55 V to 6 V input range in an 8-pin WSON package. AEC-Q100 qualified, RoHS-compliant, and available from stock worldwide for automotive applications.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 9
- Lifecycle
- ACTIVE
- Datasheet
- TPS78518BQWDRBRQ1 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7550(MOQ 250)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TPS78518BQWDRBRQ1?
- 1 A output current with only 315 mV nominal dropout voltage (425 mV max) enabling efficient 1.8 V rail generation from a 2.1 V input in battery-powered automotive systems
- Input voltage range of 2.55 V to 6 V with 6.5 V absolute maximum, compatible with automotive 3.3 V and 5 V system rails in ADAS, infotainment, and body control modules
- AEC-Q100 automotive qualification and RoHS-compliant (Pb-free) 8-pin WSON package ensuring reliable operation in harsh automotive temperature and vibration environments
What is TPS78518BQWDRBRQ1 used for?
The TPS78518BQWDRBRQ1 is used in automotive ECUs, ADAS sensor modules, and infotainment systems where a high-accuracy 1 A LDO with low 315 mV dropout is needed to regulate automotive 3.3 V or 5 V rails down to a stable 1.8 V supply for processors, FPGAs, or memory devices. Its AEC-Q100 qualification and compact WSON-8 package also make it suitable for in-vehicle camera modules, automotive radar front-ends, and USB power conditioning circuits requiring low-noise regulated output with minimal thermal dissipation.
What are the specifications of TPS78518BQWDRBRQ1?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.425V |
| Dropout Voltage1-Nom | 0.315V |
| Input Voltage Absolute-Max | 6.5V |
| Input Voltage-Max | 6V |
| Input Voltage-Min | 2.55V |
| JESD-30 Code | S-PDSO-N8 |
| JESD-609 Code | e4 |
| Line Regulation-Max | 0.004% |
| Load Regulation-Max | 0.015% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 150°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 1A |
| Output Voltage1-Max | 1.8306V |
| Output Voltage1-Min | 1.7694V |
| Output Voltage1-Nom | 1.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC8,.12,25 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Screening Level | AEC-Q100 |
| Surface Mount | YES |
| Technology | BICMOS |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Voltage Tolerance-Max | 1.7% |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the TPS78518BQWDRBRQ1 datasheet?
TPS78518BQWDRBRQ1 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TPS78518BQWDRBRQ1?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the dropout voltage of the TPS78518BQWDRBRQ1 at full 1 A output current?
The TPS78518BQWDRBRQ1 has a nominal dropout voltage of 315 mV and a maximum of 425 mV at 1 A load current. This low dropout allows efficient regulation down to a 1.8 V output from an input as low as 2.55 V, making it ideal for automotive systems where battery voltage can drop significantly during cold-crank events.
Is the TPS78518BQWDRBRQ1 suitable for use in automotive ADAS sensor power designs?
Yes, the TPS78518BQWDRBRQ1 carries AEC-Q100 automotive qualification and is Pb-free (RoHS-compliant), making it appropriate for ADAS sensor modules, radar, and camera power supplies. Its 2.55 V to 6 V input range is compatible with 3.3 V and 5 V automotive system rails, and the 1 A output supports powering MCUs, DSPs, and imaging sensors in safety-critical automotive applications.
How does the TPS78518BQWDRBRQ1 compare with other 1 A automotive LDOs in terms of input voltage range?
With a 2.55 V to 6 V input voltage range and 6.5 V absolute maximum, the TPS78518BQWDRBRQ1 is optimized for 3.3 V and 5 V post-regulator stages rather than direct battery input. Compared to automotive LDOs rated to 40 V, this device trades wide input voltage range for very low 315 mV dropout and 1 A drive, making it best suited as a point-of-load regulator downstream of a buck converter in automotive power trees.
What package does the TPS78518BQWDRBRQ1 use and how does it affect thermal performance at 1 A?
The TPS78518BQWDRBRQ1 is housed in an 8-pin WSON (S-PDSO-N8) with an exposed thermal pad, enabling efficient heat dissipation into the PCB ground plane. At 1 A with 425 mV maximum dropout, the maximum power dissipation is 425 mW; the thermal pad connection to a copper pour can keep junction temperature well within the automotive-rated limit for most operating conditions.
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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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