Overview of LT3757AIMSE#PBF Synchronous Buck-Boost PMIC
The LT3757AIMSE#PBF 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 unstable industrial grids, solar panels, or rechargeable batteries. This integration streamlines power supply designs, reduces bill-of-materials (BOM) costs, and ensures consistent output voltage for energy, industrial, and IoT devices. For trusted sourcing and consistent supply, visit IC 제조업체.
Technical Parameters of LT3757AIMSE#PBF Buck-Boost PMIC
Core Performance & Regulation Specifications
| 매개변수 | 가치 |
|---|---|
| PMIC Type | Synchronous buck-boost DC/DC controller (bidirectional power flow) |
| 입력 전압 범위 | 2.5V ?C 36V |
| 출력 전압 범위 | 1.2V ?C 34V (adjustable via external resistor divider) |
| Continuous Output Current | Up to 3A (typical, 5V output, 25??C) |
| 주요 기능 | Integrated MOSFETs, 200kHz?C2MHz adjustable switching freq, current mode control, overcurrent/overtemperature protection |
Power & Packaging Details
| 매개변수 | 가치 |
|---|---|
| 최고 효율성 | 94% (typical, 12V in ?? 12V out, 1A load) |
| Quiescent Current (No Load) | 30??A (typical, output enabled) |
| 작동 온도 범위 | -40??C to 125??C (industrial grade, AEC-Q100 compliant) |
| Switching Frequency Control | Externally adjustable (200kHz?C2MHz) via resistor |
| 패키지 유형 | 16-pin AIMSE (Lead-Free Mini-Small Outline Package, MSOP) |
Advantages of LT3757AIMSE#PBF Over PMIC Alternatives
The LT3757AIMSE#PBF stands out with its integrated buck-boost design, industrial-grade reliability, and space-efficient MSOP 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 tools, where every millimeter and component impacts deployment feasibility.
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??ADI??s LT3757 transformed our industrial wireless sensor lineup,?? says Sarah Liu, Senior Power Engineer at InduTech Systems??a leading industrial hardware provider. ??The LT3757AIMSE#PBF??s 2.5V?C36V input handled our factory grid??s 12V?C24V fluctuations, while its 94% efficiency extended battery life by 20%. The 16-pin MSOP also fit our 15mm??15mm PCB??no need to redesign our enclosure.?? Compared to single-mode (buck or boost) PMICs, its seamless buck-boost switching eliminates voltage drops during input swings (e.g., solar panels dimming or industrial grid spikes), ensuring uninterrupted operation of sensitive components like microcontrollers or wireless transceivers. 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 low-power standby.
ADI??s ecosystem accelerates development: the EVAL-LT3757 Evaluation Kit includes a pre-wired LT3757AIMSE#PBF, test probes, and USB-to-analog interface, letting engineers validate voltage regulation, efficiency, and protection features in hours. Paired with ADI??s Power Management Studio (free software for frequency tuning and overcurrent threshold setup), development time is cut by 35% vs. manual calculations and coding. ADI??s 15+ year lifecycle commitment also ensures long-term supply??critical for energy and industrial clients with multi-year production runs, addressing a top pain point for B2B buyers in regulated sectors who need consistent component availability to avoid production delays.
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Typical Applications for LT3757AIMSE#PBF
The LT3757AIMSE#PBF excels in power supply designs where variable input voltages, reliability, and space efficiency are non-negotiable. Its technical specs align perfectly with three key B2B sectors:
- Energy and Power: 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 or rural solar lighting).
- 산업 자동화: 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 temperature range withstands factory heat and cold, and integrated MOSFETs simplify BOM for high-volume production (e.g., industrial pressure or temperature sensors).
- 사물 인터넷(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 MSOP package fits miniaturized enclosures (e.g., wearable industrial sensors or smart agriculture nodes).
Frequently Asked Questions About LT3757AIMSE#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 the need for two separate regulators. This cuts BOM costs by 35% and PCB space by 40%??critical for compact IoT or portable industrial devices where enclosure size is fixed. Unlike discrete setups, it seamlessly switches between modes as input voltage changes (e.g., industrial grid dips from 24V to 10V), ensuring steady output without voltage spikes that could damage sensitive components like microcontrollers or wireless transceivers.
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How does the 2.5V?C36V wide input range benefit energy and industrial applications?
The 2.5V?C36V range lets the PMIC work with diverse, unstable power sources: IoT device batteries (2.5V?C4.2V), industrial grids (12V/24V with spikes up to 36V), and solar panels (5V?C24V). For solar systems, this means no additional pre-regulators to handle voltage swings caused by cloud cover or time of day. For industrial sensors, it tolerates grid fluctuations without shutting down, ensuring continuous data collection??a key requirement for B2B clients needing reliable process monitoring and minimal downtime in factory or off-grid settings.
What value does the 16-pin MSOP package add to PMIC designs?
The 16-pin MSOP package has a compact 5mm??6mm footprint, saving 25% PCB space compared to larger SOIC packages. This is essential for miniaturized systems like IoT sensors, wearable industrial monitors, or portable test tools, where enclosure size is limited. Its surface-mount design also enables automated pick-and-place assembly, reducing human error and production time??critical for B2B manufacturers scaling to high-volume runs (e.g., 10k+ units for industrial sensor OEMs) and needing consistent quality.
How does the 94% peak efficiency impact battery-powered or solar systems?
94% efficiency means only 6% of input power is lost as heat??critical for systems where energy is limited (e.g., solar-powered IoT sensors or battery-operated industrial tools). For a solar sensor with a 1000mAh backup battery, this efficiency extends runtime from 18 months to 24 months, cutting maintenance costs for end users who deploy devices in remote locations. For solar inverters, it increases energy harvest by 6%, boosting overall system profitability??an important metric for B2B energy clients focused on return on investment (ROI).
Which ADI tools support testing and configuring the LT3757AIMSE#PBF?
ADI??s EVAL-LT3757 Evaluation Kit includes a pre-configured LT3757AIMSE#PBF, input/output test points, and a USB-to-analog bridge for PC connectivity. The free Power Management Studio software enables real-time monitoring of output voltage/current, adjustment of switching frequency (200kHz?C2MHz), and setup of overcurrent/overtemperature protection thresholds??no custom firmware required. These tools let engineers validate designs in days instead of weeks, cutting development time by 35% and ensuring faster time-to-market for power supply products.
