LTC3109EGN#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices LTC3109 auto-polarity ultralow voltage step-up converter and power manager in 20-pin SSOP package. Harvests energy from thermoelectric generators with input voltages as low as 30 mV. Also operates as an LDO regulator, available in lead-free version with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- LTC3109EGN#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.4300(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Auto-polarity operation accepting input voltages as low as 30 mV from thermoelectric generators
- Integrated power manager with LDO regulator mode for flexible output configuration
- Hysteretic current-mode control for efficient ultralow input voltage energy harvesting
- 20-pin SSOP package enabling compact energy harvesting module designs
Applications
The LTC3109EGN is ideal for energy harvesting systems that convert waste heat from industrial equipment or human body temperature differentials into usable power. Its ability to start and operate from input voltages as low as 30 mV makes it well-suited for wireless sensor nodes powered by Peltier elements or small thermoelectric generators. It is also used in remote monitoring systems and IoT devices where battery replacement is impractical.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1641 (GN20) |
| YTEOL | 10 |
| Additional Feature | ALSO OPERATES AS LDO REGULATOR |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | HYSTERETIC CURRENT MODE |
| Input Voltage-Max | 0.5V |
| Input Voltage-Min | 0.05V |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 0.026A |
| Output Voltage-Max | 5.1V |
| Output Voltage-Min | 4.875V |
| Output Voltage-Nom | 5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.635mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| ## LTC3109EGN#PBF Alternates Showing results | Image |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LTC3109EGN#PBF:
suggested
Frequently Asked Questions
What is the minimum input voltage the LTC3109EGN can operate from for energy harvesting?
The LTC3109EGN can start and operate from input voltages as low as 30 mV, making it one of the lowest threshold energy harvesting ICs available. Its auto-polarity feature also means it accepts either polarity from a thermoelectric generator without requiring external rectification, simplifying system design significantly and improving overall energy capture efficiency.
In which energy-harvesting applications does LTC3109EGN outperform conventional boost converters?
The LTC3109EGN excels in thermoelectric generator applications where source voltages range from 30 mV to 500 mV, conditions where standard boost converters fail to start. Applications like pipe temperature monitoring, industrial motor hot-spot sensing, and wearable health patches that harvest body heat at just 1°C to 5°C temperature differentials benefit from its hysteretic current-mode control and auto-polarity, delivering milliwatt-level power without an external battery.
What package does LTC3109EGN use and how does it compare to the smaller LTC3109 package options?
The LTC3109EGN uses a 20-pin SSOP package (GN20), which measures approximately 7.5mm x 5.3mm. This is larger than the 20-pin QFN variant but easier to hand-solder and inspect during prototyping. The SSOP package offers 0.635mm pitch between pins, adequate for standard PCB manufacturing, while the QFN version saves board space for production designs where 2-layer routing is constrained.
When should a designer choose LTC3109EGN over LTC3108 for a thermoelectric power supply?
Choose LTC3109EGN over LTC3108 when the thermoelectric generator polarity cannot be guaranteed, since the LTC3109 adds auto-polarity handling for input voltages from 30 mV to 500 mV. The LTC3108 requires a fixed positive input, so applications where generator orientation changes, or where assembly errors can flip polarity, are better served by LTC3109EGN's automatic polarity correction, reducing field failure risk in 8-channel sensor arrays or multi-node deployments.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $12.0800 | $12.08 |
| 10+ | $8.3010 | $83.01 |
| 19+ | $7.2000 | $136.80 |
| 1000+ | $5.4300 | $5430.00 |
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