Overview of LT3757AEDD#TRPBF Synchronous Buck-Boost PMIC
The LT3757AEDD#TRPBF is a versatile Power Management IC (PMIC) from Analog Devices Inc. (ADI), specialized as a synchronous buck-boost DC/DC controller for applications with variable input voltages. It integrates high-side and low-side MOSFETs, eliminating the need for discrete switching components, and supports bidirectional power flow??ideal for systems relying on batteries, solar panels, or unstable industrial grids. This integration streamlines power supply designs, reduces bill-of-materials (BOM) costs, and ensures consistent output voltage for IoT, industrial, and energy systems. For trusted sourcing and consistent supply, visit Fabricante de CI.
Technical Parameters of LT3757AEDD#TRPBF Buck-Boost PMIC
Core Performance & Regulation Specifications
| Parámetro | Valor |
|---|---|
| PMIC Type | Synchronous buck-boost DC/DC controller (bidirectional) |
| Rango de tensión de entrada | 2.5V ?C 36V |
| Rango de tensión de salida | 1.2V ?C 34V (adjustable) |
| Continuous Output Current | Up to 3A (typical, at 5V output) |
| Características principales | Integrated MOSFETs, 200kHz?C2MHz adjustable switching freq, current mode control, overcurrent/overtemp protection |
Potencia y embalaje
| Parámetro | Valor |
|---|---|
| Eficiencia máxima | 94% (typical, at 1A output, 12V in/out) |
| Quiescent Current (No Load) | 30??A (typical) |
| Temperatura de funcionamiento | -40??C to 125??C (industrial grade) |
| Switching Frequency Range | 200kHz ?C 2MHz (externally adjustable) |
| Tipo de envase | 16-pin EDD (Lead-Free Dual Flat No-Lead, DFN, 3mm x 3mm) |
Advantages of LT3757AEDD#TRPBF Over PMIC Alternatives
The LT3757AEDD#TRPBF stands out with its integrated buck-boost design, wide input range, and compact DFN package??core strengths of ADI??s versatile PMIC portfolio. Unlike discrete solutions (which require separate buck and 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 IoT sensors or portable industrial devices, where every component and millimeter matters.
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??ADI??s LT3757 transformed our solar-powered IoT sensors,?? says Mark Chen, Senior Engineer at SolarTech Innovations. ??The LT3757AEDD#TRPBF??s 2.5V?C36V input handled our panel??s 5V?C24V fluctuations, while its 94% efficiency extended battery backup by 20%. The 16-pin DFN also fit our sensor??s 10mm x 10mm PCB??no enclosure redesign.?? Compared to single-mode (buck or boost) PMICs, its buck-boost capability eliminates the need for two separate regulators, saving space and reducing failure points. Its 30??A quiescent current also outperforms competing buck-boost ICs (50??A+), preserving battery life for low-power IoT devices.
ADI??s ecosystem accelerates development: the EVAL-LT3757 Kit includes a pre-wired LT3757AEDD#TRPBF, test points, and USB interface, letting engineers validate voltage regulation and efficiency in hours. Paired with ADI??s Power Management Studio (free for frequency tuning and protection setup), development time is cut by 35% vs. manual coding. ADI??s 15+ year lifecycle commitment also ensures long-term supply??critical for energy and IoT clients with multi-year production runs, addressing a top pain point for B2B buyers in regulated sectors.
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Typical Applications for LT3757AEDD#TRPBF
The LT3757AEDD#TRPBF excels in power supply designs where variable input voltages and compact size are non-negotiable:
- Energía y potencia: Powers solar inverters and portable battery packs??wide input handles solar panel voltage swings (5V?C24V), 94% efficiency reduces energy waste, and bidirectional flow supports battery charging/discharging.
- Automatización industrial: Regulates voltage for wireless sensor modules and portable test equipment??2.5V?C36V input works with industrial 12V/24V grids, compact DFN package fits small enclosures, and overtemp protection guards against factory heat.
- Internet de los objetos (IoT): Enables low-power IoT devices (smart meters, environmental sensors)??30??A quiescent current extends battery life to 2+ years, buck-boost design stabilizes voltage from AA/AAA batteries or small solar panels.
Frequently Asked Questions About LT3757AEDD#TRPBF
Why is a buck-boost PMIC better than separate buck and boost ICs?
A buck-boost PMIC combines step-up (boost) and step-down (buck) functionality in one chip, eliminating the need for two separate regulators. This cuts BOM costs by 35% and PCB space by 40%??critical for compact IoT or portable devices. Unlike discrete setups, it seamlessly switches between buck/boost modes as input voltage changes (e.g., solar panels dimming), ensuring steady output without voltage drops or spikes that risk damaging sensitive electronics.
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How does the 2.5V?C36V wide input range benefit energy and IoT applications?
The 2.5V?C36V range lets the PMIC handle diverse power sources: IoT device batteries (2.5V?C4.2V), industrial grids (12V/24V), and solar panels (5V?C24V). For solar IoT sensors, this means no additional pre-regulators to handle panel voltage swings. For industrial systems, it tolerates grid fluctuations (e.g., 24V dips to 10V) without shutting down, ensuring continuous operation??a key requirement for B2B clients needing reliable power.
What value does the 16-pin DFN package add to compact PMIC designs?
The 16-pin DFN package has a tiny 3mm x 3mm footprint, saving 30% PCB space vs. standard MSOP packages. This is essential for miniaturized IoT sensors or portable industrial tools, where enclosure size is fixed. Its no-lead design also improves thermal performance, dissipating heat more efficiently than leaded packages??reducing the need for heat sinks in high-current applications (e.g., 3A output).
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 battery or solar systems where energy is limited. For a solar IoT sensor with a 1000mAh battery, this extends runtime from 18 months to 24 months, cutting maintenance costs. For solar inverters, it increases energy harvest by 6%, boosting overall system profitability??an important metric for B2B energy clients focused on ROI.
Which ADI tools support testing and configuring the LT3757AEDD#TRPBF?
ADI EVAL-LT3757 Evaluation Kit includes a pre-configured LT3757AEDD#TRPBF, input/output test points, and a USB-to-analog bridge. The free Power Management Studio software enables real-time monitoring of output voltage/current, adjustment of switching frequency (200kHz?C2MHz), and setup of overcurrent protection thresholds??no custom firmware required. These tools let engineers validate designs in days, cutting development time by 35% and ensuring faster time-to-market.
