PTPS78433QDBVRQ1 Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
PTPS78433QDBVRQ1 is an automotive-grade 300 mA fixed-output low-dropout linear regulator in a 5-pin SOT-23 package, accepting 3.8 V to 6 V input with a maximum dropout voltage of 115 mV. AEC-Q100 qualified with 0.0003% line regulation, it targets ADAS, infotainment, and automotive sensor supply rails.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- PTPS78433QDBVRQ1 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 PTPS78433QDBVRQ1?
- Automotive AEC-Q100 qualified 300 mA LDO regulator
- Input voltage range: 3.8 V to 6 V (abs max 6.5 V)
- Ultra-low dropout voltage: 115 mV max at full load
- Fixed output for stable sensor and processor rail supply
- 0.0003% max line regulation for precision voltage accuracy
- 5-pin SOT-23 (R-PDSO-G5) compact package
- Introduced 2020 for next-generation automotive designs
What is PTPS78433QDBVRQ1 used for?
PTPS78433QDBVRQ1 is used in automotive ADAS sensor modules, body control units, and infotainment subsystems where a 5 V or regulated supply must be stepped down with minimal dropout to power microcontrollers, sensors, and interface ICs from a 4.2 V to 5.5 V intermediate bus. It also serves in automotive camera and LiDAR front-ends where tight output voltage accuracy and low noise from a linear regulator are preferred over switching regulators.
What are the specifications of PTPS78433QDBVRQ1?
| 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 | 3.8V |
| 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 | 3.3495V |
| Output Voltage1-Min | 3.2505V |
| Output Voltage1-Nom | 3.3V |
| 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 PTPS78433QDBVRQ1 datasheet?
PTPS78433QDBVRQ1 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for PTPS78433QDBVRQ1?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the dropout voltage of PTPS78433QDBVRQ1 at its maximum 300 mA output current?
PTPS78433QDBVRQ1 has a maximum dropout voltage of 115 mV at 300 mA load, and a nominal dropout of approximately 200 mV. This low dropout allows the regulator to maintain regulation from a 3.8 V input, making it suitable for 3.3 V or lower fixed output rails supplied from a lithium-ion cell or post-regulator bus in automotive electronics.
Is PTPS78433QDBVRQ1 qualified for automotive applications, and which standard covers this?
Yes, PTPS78433QDBVRQ1 carries AEC-Q100 automotive qualification, as indicated by the Q1 suffix in the part number. This qualification covers accelerated stress testing including high-temperature operating life, temperature cycling, and electrostatic discharge, ensuring the device meets the reliability requirements for use in automotive ADAS sensors, infotainment modules, and body electronics over the vehicle lifetime.
For an ADAS camera module powered from a 5 V rail, can PTPS78433QDBVRQ1 supply a 3.3 V image sensor?
Yes, with a 5 V input and a fixed output set to 3.3 V, the input-to-output differential is 1.7 V, well above the 115 mV maximum dropout, so regulation is fully maintained at 300 mA. The 5-pin SOT-23 package fits on the small PCB of a camera module, and the 0.0003% line regulation ensures the image sensor's supply remains stable as the 5 V input fluctuates with automotive load transients.
How does PTPS78433QDBVRQ1's 5-pin SOT-23 package compare to a TO-252 LDO in terms of board area?
The 5-pin SOT-23 (R-PDSO-G5) occupies roughly 3 mm x 1.75 mm of board area, significantly smaller than a TO-252 or DPAK package which can be 6 mm x 6 mm or larger. For automotive sensor and ADAS modules where PCB real estate is constrained, the SOT-23 allows the designer to fit the 300 mA LDO alongside closely spaced connectors and sensors without a dedicated power section.
What line regulation performance does PTPS78433QDBVRQ1 achieve, and why does this matter for sensor supply circuits?
PTPS78433QDBVRQ1 achieves a maximum line regulation of 0.0003%, meaning the output voltage changes by less than 0.3 mV per 100 mV change in input voltage. For automotive sensor supply circuits, this tight regulation prevents supply-induced offset errors in ADC reference voltages and analog sensor front-ends, which is critical for accurate signal acquisition in ADAS radar and LiDAR systems where supply noise directly impacts measurement precision.
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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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