====== LamaPLC: LTC3108-1 Ultra Low Voltage Boost Converter Power Manager Breakout Development Board ======
{{ :sensor:ltc3108-1_1.png?180|LTC3108-1 Ultra Low Voltage Boost Converter Power Manager Breakout Development Board}}
The LTC3108-1 is a compact, ultralow-voltage step-up DC/DC converter and power manager from Analog Devices, engineered to harvest energy from sources as low as 20 mV, including **thermoelectric generator**s (TEGs) and small **solar cell**s.

**Key Features and Specifications**

  * **Ultralow Start-Up Voltage:** Operates from input voltages as low as 20mV (with a 1:100 transformer ratio), making it suitable for very low-power sources.
  * **Power Management:** Provides a complete solution for wireless sensing and data acquisition, including surplus energy management to a storage capacitor or rechargeable battery.
  * **Selectable Main Output (VOUT):** The main output is programmable to one of four fixed voltages using external pins (VS1 and VS2): 2.5V, 3V, 3.7V, or 4.5V. This differs from the standard LTC3108, which offers 2.35V, 3.3V, 4.1V, or 5V options.
  * **Integrated LDO:** Includes a 2.2V LDO (low dropout regulator) capable of supplying up to 3mA to power an external microprocessor.
  * **Additional Outputs:** Features a second logic-controlled output (VOUT2) and a reserve energy output (VSTORE) for backup power.
  * **Power Good Indicator:** A PGOOD indicator pin signals when the main output voltage is within regulation.
  * **Extremely Low Quiescent Current:** Ensures fast charging of the output reservoir capacitor.

More information: https://www.digikey.tw/htmldatasheets/production/1595402/0/0/1/ltc3108-1.html

|{{:sensor:ltc3108-1_1.png?180|LTC3108-1}}|{{:sensor:ltc3108-1_2.png?180|LTC3108-1}}|{{:sensor:ltc3108-1_3.png?180|LTC3108-1}}|
==== Pinout ====
^Pin^Name^Function Description|
^SW|Drain connection for the internal N-channel MOSFET switch. Connects to the primary of the step-up transformer.|
^C1, C2|Connections for the external charge pump capacitors used to boost the voltage.|
^VAUX|Output of the internal rectifier. A bypass capacitor (typically 1 µF) is required for the chip to function.|
^VSTORE|Output for a large storage capacitor or battery to hold excess harvested energy for use when the input source is unavailable.|
^VOUT|Main regulated output. Voltage is selectable (2.5V, 3V, 3.7V, or 4.5V) via VS1 and VS2 pins.|
^VOUT2|A second switched output controlled by the VOUT2_EN pin. Useful for powering sensors only when needed.|
^VLDO|2.2V low dropout (LDO) regulator output, providing up to 3mA for a microprocessor.|
^PGD|Power Good Indicator. Logic is high when VOUT is in regulation.|
^VS1, VS2|Output voltage select pins. These determine the regulation level for the main VOUT.|
^GND|Signal and power ground. For the DFN package, the exposed pad must also be soldered to ground.|

**Package Pin Mapping**
  * 12-Lead DFN: SW (1), VAUX (2), VSTORE (3), VOUT (4), VOUT2 (5), VOUT2_EN (6), PGD (7), VS1 (8), VS2 (9), C2 (10), C1 (11), GND (12).
  * 16-Lead SSOP: Pins follow a similar sequence but include additional GND pins (1, 8, 9, 16). 

==== Typical application ====
{{:sensor:ltc3108-1_4.png|LTC3108-1}}

==== Peltier-Powered Energy Harvester for Remote Sensor Applications ====
{{:sensor:ltc3108-1_5.png|LTC3108-1}}


{{tag>LTC3108-1 Voltage Boost Converter power_manager step-up DC/DC_converter thermoelectric_generator solar_cell}}

This page has been accessed for: Today: {{counter|today}}, Until now: {{counter|total}}