Overview of LT3757AIMSE#PBF Synchronous Buck-Boost PMIC for Variable Power Systems
The LT3757AIMSE#PBF is a versatile Power Management IC (PMIC) from Analog Devices Inc. (ADI), engineered as a synchronous buck-boost DC/DC controller to solve voltage instability in systems with variable power sources. 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 energy, industrial, and IoT electronics. For trusted sourcing and consistent supply, visit IC Manufacturer.
Technical Parameters of LT3757AIMSE#PBF Buck-Boost PMIC
Core Performance & Voltage Regulation Specifications
| Parameter | Value |
|---|---|
| PMIC Function Type | Synchronous buck-boost DC/DC controller (bidirectional power flow) |
| Input Voltage Range | 2.5V ?C 36V |
| Adjustable Output Voltage Range | 1.2V ?C 34V (via external resistor divider) |
| Continuous Output Current | Up to 3A (typical, 5V output, 25??C) |
| Key Functional Features | Integrated MOSFETs, 200kHz?C2MHz adjustable switching freq, current mode control, overcurrent/overtemperature protection |
Power Efficiency & Packaging Details
| Parameter | Value |
|---|---|
| Peak Efficiency | 94% (typical, 12V input ?? 12V output, 1A load) |
| Quiescent Current (No Load, Output Enabled) | 30??A (typical) |
| Operating Temperature Range | -40??C to 125??C (industrial grade, AEC-Q100 compliant) |
| Switching Frequency Control | Externally adjustable (200kHz?C2MHz) via precision resistor |
| Package Type | 16-pin AIMSE (Lead-Free Mini-Small Outline Package, MSOP, 5mm ?? 6mm footprint) |
Advantages of LT3757AIMSE#PBF Over Traditional PMIC Alternatives
The LT3757AIMSE#PBF outperforms traditional PMIC solutions with its integrated design, industrial-grade durability, and space efficiency??core strengths of ADI??s versatile 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 IoT sensors or portable industrial tools, where every component and millimeter 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 OEM. ??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 switching eliminates voltage drops during input swings (e.g., solar panels dimming), 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.
ADI??s ecosystem accelerates development: the EVAL-LT3757 Evaluation Kit includes a pre-wired LT3757AIMSE#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.
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Typical Applications for LT3757AIMSE#PBF
The LT3757AIMSE#PBF excels in power supply designs where variable inputs, reliability, and space efficiency align. Its technical specs match 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).
- Industrial Automation: 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 sensors).
- Internet of Things (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 fits miniaturized enclosures.
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 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.
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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 MSOP package add to PMIC designs?
The 16-pin MSOP??s 5mm??6mm footprint saves 25% PCB space vs. larger SOIC packages??essential for miniaturized systems like IoT sensors or portable tools. Its surface-mount design enables automated assembly, reducing human error and production time. For B2B manufacturers scaling to 10k+ unit runs, this efficiency cuts costs and ensures consistent quality.
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.
Which ADI tools support testing and configuring the LT3757AIMSE#PBF?
ADI??s EVAL-LT3757 Kit includes a pre-wired LT3757AIMSE#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.
