PTPS78450QDBVRQ1 Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
Texas Instruments PTPS78450QDBVRQ1 is an automotive-grade 300 mA, low-dropout linear regulator with a 5.5 V to 6 V input range, 0.2 V typical dropout, and fixed output voltage in a 5-pin SOT-23 package. AEC-Q100 qualified with excellent line regulation of 0.0003% for stable post-regulation in vehicle electronics.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- PTPS78450QDBVRQ1 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of PTPS78450QDBVRQ1?
- 300 mA output current with only 0.2 V typical dropout voltage at full load
- Narrow 5.5 V to 6 V input range optimized for post-regulation from 5 V switching supplies
- Ultra-low line regulation of 0.0003% for highly stable output voltage
- AEC-Q100 automotive qualified for reliability in vehicle electronic systems
- Compact 5-pin SOT-23 package for space-constrained automotive PCB layouts
What is PTPS78450QDBVRQ1 used for?
The PTPS78450QDBVRQ1 is used as a precision post-regulator in automotive infotainment, ADAS, and body electronics modules where a clean, stable voltage is required after a switching pre-regulator. Its low dropout and AEC-Q100 qualification make it suitable for noise-sensitive analog and mixed-signal circuits operating from 5 V rails in vehicle environments.
What are the specifications of PTPS78450QDBVRQ1?
| Date Of Intro | 2020-02-21 |
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.115V |
| Dropout Voltage1-Nom | 0.2V |
| Input Voltage Absolute-Max | 6.5V |
| Input Voltage-Max | 6V |
| Input Voltage-Min | 5.5V |
| JESD-30 Code | R-PDSO-G5 |
| Line Regulation-Max | 0.0003% |
| 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 | 0.3A |
| Output Voltage1-Max | 5.075V |
| Output Voltage1-Min | 4.925V |
| Output Voltage1-Nom | 5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Screening Level | AEC-Q100 |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Voltage Tolerance-Max | 1.5% |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
Where can I find the PTPS78450QDBVRQ1 datasheet?
PTPS78450QDBVRQ1 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for PTPS78450QDBVRQ1?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does the PTPS78450QDBVRQ1 require to maintain its regulated output?
The PTPS78450QDBVRQ1 operates from an input voltage of 5.5 V to 6 V, with an absolute maximum of 6.5 V. The 0.2 V typical dropout means the output regulation is maintained as long as input stays above the output voltage by at least 200 mV at the 300 mA rated current.
How does the AEC-Q100 qualification of the PTPS78450QDBVRQ1 affect automotive supply-chain decisions?
AEC-Q100 qualification ensures the PTPS78450QDBVRQ1 has passed automotive stress tests including temperature cycling from -40°C to 125°C, high-temperature operating life, and electrostatic discharge requirements, giving procurement teams confidence in long-term reliability for automotive production programs without additional device-level qualification testing.
What is the significance of the 0.0003% line regulation spec for analog signal chains powered by PTPS78450QDBVRQ1?
A line regulation of 0.0003% means the output voltage shifts less than 3 µV per 1 V change in input over the 5.5 V to 6 V input range. This near-ideal regulation keeps reference voltages and ADC supply rails stable, preventing noise-induced measurement errors in precision analog front ends.
Is the PTPS78450QDBVRQ1 suitable for driving a 5 V microcontroller rail directly from a 12 V automotive bus?
No. The PTPS78450QDBVRQ1 accepts only 5.5 V to 6 V on its input, so a 12 V automotive bus requires a pre-regulator or switching converter to step down to approximately 5.8 V before the LDO. It functions as a low-noise post-regulator, not a primary buck converter for 12 V to 5 V conversion.
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Why Buy from FindMyChip
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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