PATL431LIBQDBZRQ1 Texas Instruments Integrated Circuit (SOT23 (3-Pin)) In Stock
Texas Instruments PATL431LIBQDBZRQ1 is an automotive-grade AEC-Q100 programmable shunt voltage regulator with 2.5 V reference output, low IQ, and high-bandwidth in a compact SOT-23 3-pin package. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- PATL431LIBQDBZRQ1 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
What are the key features of PATL431LIBQDBZRQ1?
- AEC-Q100 automotive-qualified programmable shunt regulator with 2.5 V ±1% precision reference output (2.487 V to 2.512 V) for safety-critical vehicle power management
- Ultra-low quiescent current (low-IQ) design enabling high efficiency in battery-connected automotive keep-alive circuits and always-on ECU subsystems
- High-bandwidth two-terminal architecture in a 3-pin SOT-23 package supporting fast transient response for automotive voltage supervision and feedback regulation loops
What is PATL431LIBQDBZRQ1 used for?
The PATL431LIBQDBZRQ1 is designed for automotive power management applications including ECU voltage reference generation, battery management system feedback circuits, and DC/DC converter regulation loops requiring AEC-Q100 compliance. Its 2.5 V precision output and high bandwidth make it suitable for ADAS sensor power rails and instrument cluster supplies. The compact SOT-23 package minimizes board space in body electronics and infotainment modules operating from -40 °C to +125 °C.
What are the specifications of PATL431LIBQDBZRQ1?
| Date Of Intro | 2019-05-10 |
| YTEOL | 0 |
| Analog IC - Other Type | TWO TERMINAL VOLTAGE REFERENCE |
| JESD-30 Code | R-PDSO-G3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Voltage-Max | 2.512V |
| Output Voltage-Min | 2.487V |
| Output Voltage-Nom | 2.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Screening Level | AEC-Q100 |
| Supply Voltage-Max (Vsup) | 36V |
| Supply Voltage-Min (Vsup) | 2.487V |
| Surface Mount | YES |
| Temp Coef of Voltage-Max | 63.529ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Trim/Adjustable Output | YES |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the PATL431LIBQDBZRQ1 datasheet?
PATL431LIBQDBZRQ1 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for PATL431LIBQDBZRQ1?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output voltage accuracy of the PATL431LIBQDBZRQ1 and does it meet automotive standards?
The PATL431LIBQDBZRQ1 provides a 2.5 V nominal output with tolerance from 2.487 V to 2.512 V, representing approximately ±1% initial accuracy. It is AEC-Q100 qualified for automotive use, meaning it is tested to withstand temperature cycling from -40 °C to +125 °C and other automotive stress conditions required for ECU and body electronics applications.
How does the low-IQ feature of the PATL431LIBQDBZRQ1 benefit always-on automotive circuits?
Low quiescent current in the PATL431LIBQDBZRQ1 minimizes battery drain in always-on ECU keep-alive functions that remain powered even when the vehicle ignition is off. In a 12 V automotive system, every microamp of standby quiescent current saved extends battery life, which is critical for keyless entry modules and theft-deterrent circuits active 24 hours a day.
Can the PATL431LIBQDBZRQ1 be used as a shunt regulator in a feedback divider for a DC/DC converter?
Yes, the PATL431LIBQDBZRQ1 is a programmable shunt regulator designed specifically for feedback divider networks in DC/DC converters. Its 2.5 V reference and high-bandwidth two-terminal architecture allow it to accurately sense and regulate output voltages from 2.5 V up to the supply rail, with a response fast enough to stabilize converters operating at switching frequencies above 100 kHz.
What package does the PATL431LIBQDBZRQ1 use and how small is its PCB footprint?
The PATL431LIBQDBZRQ1 uses a 3-pin SOT-23 surface-mount package (JESD-30 code R-PDSO-G3) with a footprint of approximately 1.6 mm x 2.9 mm. This compact size makes it suitable for space-constrained automotive PCBs in ADAS modules, instrument clusters, and body control units where board area is at a premium.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
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.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit