STMicroelectronics L6982CDR Linear Regulator, SOIC8 Package for IoT & Industrial

STMicroelectronics L6982CDR Fixed 3.3V Linear Regulator Overview

The STMicroelectronics L6982CDR is a mid-current, low-noise fixed 3.3V linear voltage regulator engineered for stable power management in B2B Internet of Things (IoT), industrial automation, and home appliance applications. Designed to convert 6V?C25V input voltages to a precise 3.3V output-critical for powering noise-sensitive, 3.3V-specific components like IoT transceiver modules, industrial sensor arrays, and home appliance smart displays-it integrates a low-dropout (LDO) control circuit, overcurrent protection, thermal shutdown, and short-circuit protection into a compact SOIC8 surface-mount package. With an operating temperature range of -40??C to +125??C and support for 1.5A continuous output current, it maintains consistent performance in harsh, space-constrained environments-making it a top choice for engineers prioritizing low noise, space efficiency, and 24/7 reliability in low-to-mid power systems.

As a trusted product from STMicroelectronics-a global leader in semiconductor innovation with decades of expertise in industrial and IoT power solutions-the L6982CDR meets strict quality standards (including RoHS 2 certification and ISO 9001 compliance) and undergoes rigorous testing for long-term durability. Senior engineers at a leading IoT sensor firm endorse it, noting: ??The L6982CDR??s low noise and 1.5A current let us power 5 sensors with one chip, while the SOIC8 package cuts our PCB space by 40% vs. older DIP regulators-critical for our compact wireless nodes.?? For more reliable industrial and IoT ICs, visit IC 製造商.

Technical Parameters of L6982CDR

Key Technical Features of L6982CDR

• Fixed 3.3V output with ??2% accuracy, eliminating external voltage adjustment components (e.g., trimmers, resistors) and ensuring consistent power for 3.3V-specific devices like IoT microcontrollers. An industrial sensor engineer reported this feature ??cut our component count by 25%, as we no longer need calibration parts-saving 14% PCB space and 20% assembly time.??
• 1.5A continuous output current, delivering enough power for multi-component systems (e.g., 1A microcontroller + 5x 0.1A sensors) without parallel regulators. An IoT gateway designer noted ??this current capacity lets us power our entire sensor node with one chip, cutting component count by 45% and reducing failure points by 60%.??
• SOIC8 package with exposed thermal pad, balancing space efficiency (40% smaller than DIP8 packages) and heat dissipation (27% better than standard SOIC8 packages without pads). Home appliance teams confirm ??this package fits in 4.9mm x 3.9mm PCB slots while keeping the regulator 16??C cooler at 1.5A output-critical for slim smart display control boards.??
• Low output noise (??28??V_rms), preventing signal interference for noise-sensitive components like industrial ADCs and IoT BLE transceivers. A sensor manufacturer noted ??this noise level reduced data transmission errors in our wireless temperature sensors by 98%, meeting our clients?? ISO 9001 quality requirements without extra filtering chips.??
• 0.45V low dropout voltage, maintaining stable 3.3V output even when input voltage drops to 6.45V (e.g., during battery discharge or line voltage fluctuations). A wireless node firm shared ??this dropout lets our devices operate until batteries reach 6.45V (vs. 8V with older regulators), extending battery life by 30%-critical for remote industrial sites with limited maintenance access.??

Advantages of L6982CDR Over Alternative Solutions

Compared to low-current linear regulators (??1A), larger-package alternatives (e.g., DIP8), and high-noise switching regulators, the L6982CDR delivers three critical benefits for B2B mid-current, low-noise power designs-backed by real customer feedback:

First, its 1.5A output outperforms low-current linear regulators. Low-current 1A models force engineers to use parallel chips for 1.2A+ loads (e.g., IoT multi-sensor nodes), adding cost, PCB space, and failure points. The L6982CDR??s 1.5A capacity handles these loads with one device. An IoT sensor designer explained: ??Our old 1A regulators needed 2 parallel chips to power our 1.3A node; switching to this model cut component count by 45%, saving 14% PCB space and 20% assembly time. We also reduced voltage dip-related downtime by 99%-critical for 24/7 data collection.??

Second, its SOIC8 package solves space challenges vs. DIP8 alternatives. DIP8 through-hole packages (19.05mm x 6.35mm) take 4.8x more PCB space than the 4.9mm x 3.9mm SOIC8, making them unsuitable for compact designs. The SOIC8??s surface-mount format also enables denser PCB layouts. A home appliance firm confirmed ??our old DIP8 regulator needed a 23mm x 10mm PCB slot; this SOIC8 fits in 5mm x 5mm-critical for our slim smart oven display control board. This also reduced appliance weight by 33%, improving shipping efficiency and lowering customer complaints about bulky designs.??

Third, its low output noise outperforms switching regulators. Switching regulators typically have 100?C500??V output noise, which corrupts sensor signals and IoT data transmission. The L6982CDR??s ??28??V noise eliminates this issue. An industrial ADC designer shared ??our old switching regulator??s 160??V noise caused 23% of sensor data to be unusable; this model cuts noise by 82%, ensuring 99.9% data reliability. We also removed 2 external filters, saving 15% PCB space and 13% component cost-key for cost-sensitive industrial sensor designs.??

Typical Applications of L6982CDR

The L6982CDR is engineered to solve mid-current, low-noise power regulation challenges-with proven success in these key B2B use cases:

• 物聯網 (IoT) 多感測器節點: Converting 12V battery power to 3.3V for 5 environmental sensors and a BLE transceiver. An IoT provider confirmed ??1.5A output powers all components, and low noise reduces data errors by 98%-node uptime improved to 99.99% vs. 99.8% with old regulators.??
• Industrial Automation (Sensor Arrays): Regulating 24V factory power to 3.3V for PLC auxiliary sensors and data loggers. A factory operator noted ??wide input range fits 12V and 24V supplies, and 89% efficiency cuts energy waste by 30%-maintenance costs dropped by 32%.??
• 家電 (智慧型烤箱): Step-down 12V AC DC adapter power to 3.3V for touchscreen displays and temperature control modules. A home tech brand reported ??SOIC8 package fits in slim control boards, and fixed 3.3V output cuts component count by 25%-appliance cost reduced by 15%, meeting budget targets for mid-range models.??
• Security and Surveillance (Wireless Motion Sensors): Converting 12V POE or battery power to 3.3V for detection modules and wireless transmitters. A security firm confirmed ??low noise ensures reliable motion detection, and 1.5A output powers sensors 24/7-false alarms dropped by 84% vs. high-noise switching regulators.??
• Test and Measurement (Portable Signal Analyzers): Regulating 9V battery or 12V USB power to 3.3V for precision test circuits. A test equipment maker shared ????2% voltage accuracy ensures signal precision, and small SOIC8 package reduces tool weight by 24%-improving field usability for technicians working long shifts.??

常見問題 (FAQ)

Why is 1.5A output current beneficial for IoT multi-sensor nodes?

IoT multi-sensor nodes power 5+ components (sensors, transceivers, loggers) needing 1.2A?C1.4A total. Low-current 1A regulators require parallel chips, but the L6982CDR??s 1.5A capacity uses one device. An IoT engineer noted ??this cuts component count by 45%, saving 14% PCB space-critical for compact nodes. Fewer parts also reduce failure risks by 60%, so we spend less time troubleshooting remote deployments.??

How does the SOIC8 package help home appliance designs?

Home appliances like smart ovens and refrigerators need slim control boards-DIP8 packages are too large. The SOIC8??s 4.9mm x 3.9mm size saves 40% PCB space, enabling compact designs. A home tech designer shared ??our old DIP8 regulator needed a 23mm x 10mm slot; this SOIC8 fits in 5mm x 5mm-we now make slimmer displays that customers prefer. The thermal pad also keeps it cool, so ovens don??t overheat the control board.??

Can the L6982CDR operate in cold outdoor IoT deployments?

Yes. Its -40??C to +125??C operating range handles cold settings (e.g., -35??C winter industrial sites) while maintaining stable 3.3V output. The SOIC8??s robust design also resists moisture and vibration. An IoT deployment firm confirmed ??our sensors run in -30??C weather; this regulator keeps power stable, with zero shutdowns in 2 years-unlike our old regulator that failed at -18??C. It also handles rain and dust without issues.??

What value does low output noise add for industrial sensor arrays?

Industrial sensor arrays measure small signals (e.g., pressure, temperature) – high noise corrupts data, leading to faulty decisions. The L6982CDR??s ??28??V noise eliminates this. A factory engineer noted ??our old regulator??s 160??V noise caused 23% bad data; this model cuts noise by 82%, so we make accurate decisions. We also removed 2 filters, saving 15% PCB space and simplifying maintenance.??

How does low dropout voltage extend battery life for wireless nodes?

Wireless IoT nodes run on batteries that discharge over time-older regulators stop working when input drops below 8V (for 3.3V output), wasting capacity. The L6982CDR??s 0.45V dropout lets it operate until input hits 6.45V. A node manufacturer shared ??this extends battery life by 30%, from 4 months to 5.2 months-we replace batteries 23% less often, cutting maintenance costs by 32%. Clients also avoid downtime from unexpected battery failures.??