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
Key Features
- 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
Applications
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.
Specifications
| 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 |
Alternate & Equivalent Parts
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
How to Choose a BAS70 Schottky Diode for Signal Clamping: Selection Guide
A practical BAS70KFILM and BAS70-family Schottky diode selection guide for signal clamping, RF detection, leakage, and topology choices.
Jul 4, 2026
AMC1202DWVR Design Guide for Isolated Current Sensing
Practical AMC1202DWVR design guide covering shunt sizing, isolation layout, input filtering, ADC scaling, and sourcing choices.
Jul 4, 2026
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 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.
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.”