STMicroelectronics L6983CQTR Adjustable Linear Regulator, QFN16 Package for IoT & Medical Use

STMicroelectronics L6983CQTR Flexible Adjustable Linear Regulator Overview

The STMicroelectronics L6983CQTR is a high-precision, adjustable linear voltage regulator engineered for versatile B2B applications-including Internet of Things (IoT) gateways/sensors, Medical Devices (wearable monitors, portable diagnostics), and Industrial Automation (low-power sensor hubs). Designed to convert a 6V?C28V input voltage range to an adjustable 1.2V?C24V output (with 0.3A continuous current capacity), it delivers customizable, stable power to voltage-sensitive components like IoT BLE transceivers, medical glucose sensors, and industrial microcontrollers. Integrating a thermal shutdown, overcurrent protection, short-circuit protection, and an exposed thermal pad into a space-efficient QFN16 (Quad Flat No-Lead 16-pin) surface-mount package, it operates reliably across -40??C to +125??C-making it a top choice for engineers prioritizing output flexibility, precision, and space efficiency in portable or multi-component designs.

As a trusted power management product from STMicroelectronics-a global leader in semiconductor solutions for medical and IoT sectors with decades of expertise-this regulator meets strict quality standards (RoHS 2 compliance, ISO 9001 certification, and IEC 60601-1 medical safety qualification) and undergoes 1,500+ hours of durability testing. Senior engineers at a leading IoT device firm endorse it, noting: ??The L6983CQTR??s adjustable range powers our gateway??s 3.3V MCU, 5V sensor, and 12V transceiver with one chip-cutting component count by 60% and simplifying PCB design.?? For more reliable medical and IoT-focused ICs, visit IC Manufacturer.

Technical Parameters of STMicroelectronics L6983CQTR

Key Technical Features of L6983CQTR Linear Regulator

• Adjustable 1.2V?C24V output, eliminating the need for multiple fixed-voltage regulators. A medical device engineer reported: ??This range powers our oxygen monitor??s 3.3V display, 5V sensor, and 12V pump-cutting part count by 50% and simplifying supply chains.??
• ??1% output accuracy, ensuring precision for medical sensors and IoT data modules. An IoT tech firm shared: ??This accuracy keeps our temperature sensors within ??0.1??C-old regulators with ??3% accuracy caused 9% data errors, leading to faulty analytics.??
• Ultra-compact QFN16 3mm x 3mm package, reducing PCB space by 50% vs. standard SO8 (5mm x 6mm). A wearable designer noted: ??This package fits in our 3.5mm-thick fitness tracker-SO8 regulators would force us to increase thickness to 5mm, hurting user comfort.??
• Wide 6V?C28V input range, compatible with 12V IoT gateways and 24V industrial sensor hubs. A factory tech firm confirmed: ??This range handles our sensor hub??s 24V power dips to 8V-our old 20V-max regulator failed 7% of the time, causing data gaps.??
• 0.05mA ultra-low shutdown current, preserving battery life in portable devices. A medical wearable maker explained: ??In standby, it uses 0.05mA-extending our glucose meter??s battery life by 50% vs. regulators with 0.5mA shutdown current.??

Advantages of L6983CQTR vs. Typical Alternative Linear Regulators

Compared to fixed-output linear regulators, large-package ICs (e.g., SO8), and low-accuracy regulators, the L6983CQTR delivers three critical benefits for B2B medical and IoT designs-backed by real customer feedback:

First, its adjustable 1.2V?C24V output outperforms fixed-output regulators. Fixed-output ICs require 2?C3 separate parts to power multi-voltage components (e.g., 3.3V MCU, 5V sensor), adding cost and failure points. The L6983CQTR??s range eliminates this. An IoT gateway firm explained: ??Our old fixed-output setup used 3 regulators-this one part handles all voltages. We cut component count by 60%, reduced PCB space by 30%, and simplified assembly, saving $0.40 per unit and 20% engineering time.??

Second, its ??1% accuracy outperforms low-accuracy regulators. Most standard linear regulators have ??3% accuracy, causing critical errors in medical sensors (e.g., glucose meters) or IoT data modules. The L6983CQTR??s precision fixes this. A medical device firm confirmed: ??Our old ??3% regulator caused 10% of glucose readings to be off by ??10mg/dL-this ??1% model cuts errors to 1%. We??ve reduced patient re-tests by 90%, saving $110,000 in labor and supplies annually.??

Third, its QFN16 package solves space challenges vs. SO8. SO8 packages (5mm x 6mm) take 3x more PCB space than the 3mm x 3mm QFN16, making them unsuitable for ultra-tiny wearables. A wearable tech maker shared: ??Our old SO8 regulator used 30mm2 of PCB-this QFN16 uses just 9mm2. We shrank our fitness tracker??s PCB by 50% and cut thickness from 5mm to 3.5mm, a key user request. This boosted tracker sales by 22% in the first quarter.??

Typical Applications of STMicroelectronics L6983CQTR

The L6983CQTR excels in flexible, space-constrained designs-with proven success in these key B2B use cases:

• Medical Devices (Wearable Oxygen Monitors): Regulating 12V battery power to 3.3V (display), 5V (sensor), and 12V (pump). A medical firm confirmed: ??Adjustable output cuts part count by 50%, ??1% accuracy ensures reliable readings-patient re-tests down 90%.??
• Internet of Things (IoT) Gateways: Converting 24V solar power to 3.3V (MCU), 5V (BLE), and 12V (transceiver). An IoT firm noted: ??Wide input handles spikes, QFN16 saves space-gateway failure rates dropped by 27%.??
• Industrial Automation (Low-Power Sensor Hubs): Powering 2.5V (humidity sensor), 3.3V (MCU), and 5V (GPS) from 24V industrial power. A factory firm reported: ??Adjustable range simplifies design, low noise ensures data accuracy-sensor errors cut by 95%.??
• Medical Devices (Portable Glucose Meters): Regulating 9V adapter power to 3.3V (processor) and 5V (test strip sensor). A healthcare firm confirmed: ??Low shutdown current extends battery life, compact QFN16 fits tiny meter-user satisfaction up 28%.??
• Internet of Things (IoT) Environmental Sensors: Converting 12V battery power to 2.5V (light sensor) and 3.3V (temperature sensor). An IoT deployment firm shared: ??Adjustable output fits 2 sensors, wide input handles dips-data gaps eliminated.??

Frequently Asked Questions (FAQ) About L6983CQTR

Why is an adjustable output critical for multi-component IoT gateways?

IoT gateways power multiple components (3.3V MCU, 5V BLE, 12V transceiver) that need different voltages. Fixed-output regulators require 3 separate parts, but the L6983CQTR??s 1.2V?C24V range powers all with one. An IoT engineer noted: ??This cuts component count by 60%, reduces PCB space by 30%, and simplifies supply chain management. We??ve saved $0.40 per unit and 20% engineering time for new gateway models.??

Can the L6983CQTR operate with 24V industrial sensor hub power supplies?

Yes. Its 6V?C28V input range is optimized for 24V industrial systems and maintains stable output even during power dips (down to 8V) or spikes (up to 28V). A factory tech designer confirmed: ??Our sensor hub??s 24V power often dips to 8V during machinery startup-this regulator stays stable, while our old 20V-max regulator failed 7% of the time. We now have 24/7 data collection, no more gaps for production analytics.??

What value does the QFN16 package add for wearable medical devices?

Wearable medical devices (e.g., oxygen monitors) need to be ultra-thin (??4mm) for patient comfort, with PCBs often limited to 10mm x 15mm. The QFN16??s 3mm x 3mm size takes 50% less space than SO8. A medical device maker shared: ??Our old SO8 regulator forced our monitor to be 5mm thick-this QFN16 model lets us make it 3.5mm thick. Patient complaints about discomfort dropped by 38%, and clinics have increased orders by 25%.??

Why is low output noise important for IoT temperature sensors?

IoT temperature sensors rely on clean power to detect small temperature changes (??0.1??C)-high output noise (??50??V_rms) distorts signals, leading to incorrect readings. The L6983CQTR??s ??20??V_rms noise ensures accuracy. An IoT sensor firm noted: ??Our old regulator??s 50??V_rms noise caused 9% of readings to be off by ??0.5??C-this model cuts noise to 20??V_rms, eliminating errors. We??ve improved client trust and reduced analytics rework by 90%.??

How does ultra-low shutdown current benefit portable glucose meters?

Portable glucose meters are used intermittently (1?C2 times daily) and spend most time in standby-high shutdown current drains batteries quickly. The L6983CQTR??s 0.05mA shutdown current cuts standby power use by 90% vs. 0.5mA regulators. A medical wearable firm confirmed: ??Our old regulator used 0.5mA in standby-this model uses 0.05mA. For a 200mAh battery, this extends runtime from 5 days to 10 days, reducing patient charging frequency and improving device usability.??