LM317MQDCYRBO Texas Instruments Integrated Circuit (SOT223 (3-Pin)) In Stock
The LM317MQDCYRBO is a three-terminal adjustable positive linear voltage regulator delivering 500 mA output current over a 1.25V to 37V adjustable range. It offers excellent line and load regulation with built-in thermal overload and short-circuit protection in a SOT-223 package. AEC-Q100 qualified for automotive use, available with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT223 (3-Pin)
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- LM317MQDCYRBO Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Adjustable output voltage from 1.25V to 37V with only two external resistors, providing a versatile single-IC regulated power supply for a wide range of loads
- 500 mA continuous output current capability with internal thermal shutdown and short-circuit current limiting, enhancing system reliability without external protection components
- AEC-Q100 automotive-grade qualification (LM317MQ series) ensuring reliable operation in harsh-environment automotive and industrial power supply applications
- SOT-223 surface-mount package with exposed thermal pad enables efficient heat dissipation while minimizing PCB area in compact power converter designs
Applications
The LM317MQDCYRBO is used in automotive ECU power supply rails, on-board chargers, and infotainment systems requiring a stable adjustable regulated voltage derived from a higher input supply. It also finds applications in laboratory bench power supplies, industrial sensor conditioning circuits, and LED driver modules where a precise, current-limited voltage source is needed. Its wide adjustment range and built-in protection make it a reliable choice for general-purpose linear regulation in both commercial and automotive-grade designs.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM317MQDCYRBO:
Adjustable Positive Standard Regulator, 1.25V Min, 37V Max, BIPolar, PDSO4
Adjustable Positive Standard Regulator, 1.25V Min, 37V Max, BIPolar, PDSO4
Frequently Asked Questions
What is the output voltage range of the LM317MQDCYRBO?
The LM317MQDCYRBO provides an adjustable output voltage from 1.25V to 37V, set by two external resistors connected between the output and adjust terminal, enabling flexible power supply design for a wide variety of electronic systems.
What is the maximum output current of the LM317MQDCYRBO?
The LM317MQDCYRBO is rated for a maximum continuous output current of 500 mA, making it suitable for powering microcontrollers, sensors, op-amps, and other moderate-current loads in embedded and automotive systems.
Is the LM317MQDCYRBO suitable for automotive applications?
Yes, the LM317MQDCYRBO carries AEC-Q100 automotive qualification for the LM317MQ series, meeting stringent reliability and quality requirements for automotive electronic control units, infotainment systems, and under-hood power supply modules.
What protection features does the LM317MQDCYRBO include?
The LM317MQDCYRBO integrates internal thermal overload protection and short-circuit current limiting, automatically reducing output current or shutting down when junction temperature or output conditions exceed safe limits, protecting both the device and connected loads.
What package does the LM317MQDCYRBO use?
The LM317MQDCYRBO is housed in a SOT-223 (3-pin) surface-mount package featuring an exposed thermal tab for improved heat dissipation, providing a compact footprint with better thermal performance than standard SOT-23 packages for higher-power regulation tasks.
Related Guides
TPS61291DRVR Selection Guide: Low-Quiescent-Current Boost Converters for IoT and Wearables
How to select the TPS61291DRVR and low-Iq boost converters for IoT, wearables, and coin-cell designs. Compares specs, packages, and alternatives from TI, ADI, and Microchip.
May 13, 2026
TMS5704357BZWTQQ1 Selection Guide: Choosing the Right TMS570 Automotive MCU Variant
Compare TMS570 automotive MCU variants by ASIL level, flash, package, and peripherals. Find the right fit from entry-level LQFP to the ASIL-D TMS5704357BZWTQQ1.
May 13, 2026
TI Hercules TMS5704357BZWTQQ1 Design Guide for Automotive ASIL-D and Industrial Functional Safety
Complete integration guide for the TI Hercules TMS5704357BZWTQQ1 dual-core lockstep Cortex-R5F MCU: lockstep CPU, ECC RAM, FlexRay/CAN-FD, and ASIL-D pitfalls.
May 12, 2026
PTN78000WAH Selection Guide: Choosing the Right 1.5 A 36 V Step-Down Power Module
Compare PTN78000WAH against PTN78000WAS, PTN78060WAH, and other 1.5A 36V step-down modules. Covers package, current rating, efficiency, and drop-in replaceability.
May 12, 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
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”