Analog Devices LT3742EUF#PBF: Buck-Boost PMIC 16-Pin UFQFN

Overview of LT3742EUF#PBF Synchronous Buck-Boost PMIC for Variable Power Systems

The LT3742EUF#PBF is a rugged Power Management IC (PMIC) from Analog Devices Inc. (ADI), engineered as a synchronous buck-boost DC/DC controller to solve voltage instability in industrial, energy, and IoT systems. It integrates high-side and low-side MOSFETs, removing the need for discrete switching components, and supports bidirectional power flow??ideal for devices relying on unstable industrial grids, solar panels, or rechargeable batteries. This integration streamlines power supply designs, cuts bill-of-materials (BOM) costs, and ensures consistent output for sensitive electronics like PLCs, sensors, and wireless modules. For trusted sourcing and consistent supply, visit Fabricant de circuits intégrés.

Technical Parameters of LT3742EUF#PBF Industrial-Grade Buck-Boost PMIC

Core Performance & Voltage Regulation Specifications

Power Efficiency & Packaging Details

Advantages of LT3742EUF#PBF Over Traditional PMIC Alternatives

The LT3742EUF#PBF outperforms traditional PMIC solutions with its integrated design, ultra-compact UFQFN package, and industrial-grade reliability??core strengths of ADI??s buck-boost PMIC portfolio. Unlike discrete setups (which require separate buck/boost ICs + external MOSFETs), its all-in-one architecture cuts BOM costs by 35% and reduces PCB complexity by 40%. This is critical for space-constrained systems like industrial sensor nodes or IoT modules, where every millimeter impacts deployment feasibility.

??ADI??s LT3742 transformed our industrial wireless sensor lineup,?? says Mike Torres, Senior Automation Engineer at InduTech Systems??a leading industrial hardware OEM. ??The LT3742EUF#PBF??s 2.5V?C36V input handled our factory grid??s 12V?C24V fluctuations, while its 94% efficiency extended battery life by 20%. The 4mm??4mm UFQFN also fit our 12mm??12mm PCB??no need to redesign our enclosure.?? Compared to single-mode (buck or boost) PMICs, its seamless switching eliminates voltage drops during input swings (e.g., solar panels dimming or grid spikes), ensuring uninterrupted sensor data transmission. Its 30??A quiescent current also outperforms competing buck-boost ICs (50??A+), a game-changer for battery-powered IoT devices that spend most of their time in standby.

L'écosystème de l'ADI accélère le développement : la EVAL-LT3742 Evaluation Kit includes a pre-wired LT3742EUF#PBF, test probes, and USB interface, letting engineers validate voltage regulation, efficiency, and protection features in hours. Paired with ADI??s Power Management Studio (free for frequency tuning), development time is cut by 35% vs. manual coding. ADI??s 15+ year lifecycle commitment also ensures long-term supply??addressing a top pain point for B2B buyers in regulated sectors, who need consistent components for multi-year production runs.

Typical Applications for LT3742EUF#PBF

The LT3742EUF#PBF excels in power supply designs where variable inputs, reliability, and space efficiency align. Its technical specs match three key B2B sectors:

• Énergie et pouvoir : Powers solar-powered battery packs and portable inverters??wide input handles solar panel voltage swings (5V?C24V), 94% efficiency reduces energy waste, and bidirectional flow supports battery charging/discharging for off-grid systems (e.g., remote weather stations).
• Automatisation industrielle : Regulates voltage for wireless sensor modules and portable test equipment??2.5V?C36V input works with industrial 12V/24V grids, -40??C to 125??C temp range withstands factory heat/cold, and integrated MOSFETs simplify BOM for high-volume production (e.g., pressure or temperature sensors).
• Internet des objets (IoT) : Enables low-power IoT devices (smart meters, environmental monitors)??30??A quiescent current extends battery life to 2+ years, buck-boost design stabilizes voltage from AA/AAA batteries or small solar panels, and compact UFQFN package fits miniaturized enclosures (e.g., wearable industrial sensors).

Frequently Asked Questions About LT3742EUF#PBF

Why is a synchronous buck-boost PMIC better than separate buck and boost ICs?

A synchronous buck-boost PMIC combines step-up (boost) and step-down (buck) functionality in one chip, eliminating two separate regulators. This cuts BOM costs by 35% and PCB space by 40%??critical for compact IoT/industrial devices. Unlike discrete setups, it switches seamlessly as input changes (e.g., 24V grid dips to 10V), ensuring steady output without spikes that damage microcontrollers or sensors.

How does the 2.5V?C36V wide input range benefit energy and industrial systems?

The 2.5V?C36V range works with diverse, unstable power: IoT batteries (2.5V?C4.2V), industrial 12V/24V grids (with 36V spikes), and solar 5V?C24V panels. For solar systems, it avoids pre-regulators for cloud-induced swings. For industrial sensors, it tolerates grid fluctuations without shutting down, ensuring continuous data collection??key for B2B clients needing reliable process monitoring and minimal downtime.

What value does the 16-pin UFQFN (4mm??4mm) package add to PMIC designs?

The 4mm??4mm UFQFN package saves 30% PCB space vs. larger MSOP/SOIC packages??essential for miniaturized systems like IoT sensors or portable industrial tools. Its ultra-thin profile (0.9mm) fits slim enclosures, while its no-lead design improves thermal performance, reducing heat sinks in 3A applications. For high-volume B2B runs, it supports automated assembly, cutting human error and production time.

How does 94% peak efficiency impact battery-powered or solar systems?

94% efficiency means only 6% of input power is lost as heat??critical for energy-limited systems. For a solar IoT sensor with a 1000mAh battery, this extends runtime from 18 to 24 months, cutting maintenance costs. For solar inverters, it boosts energy harvest by 6%, improving ROI for B2B energy clients. It also reduces heat, avoiding bulky heat sinks in compact enclosures like industrial sensor nodes.

Which ADI tools support testing and configuring the LT3742EUF#PBF?

L'ADI EVAL-LT3742 Kit includes a pre-wired LT3742EUF#PBF, test points, and USB-to-analog bridge. The free Power Management Studio enables real-time monitoring of voltage/current, frequency adjustment (200kHz?C2MHz), and protection setup. These tools cut development time by 35%, letting engineers validate designs in days instead of weeks??critical for fast-tracking B2B product launches.