LTC3106 - 300mA Low Voltage Buck-Boost Converter with PowerPath and 1.6μA Quiescent Current


  • Dual Input Buck-Boost with Integrated PowerPath™ Manager
  • Ultralow Start-Up Voltages: 850mV Start with No Backup Source, 300mV with a Backup Source
  • Compatible with Primary or Rechargeable Backup Batteries
  • Digitally Selectable VOUT and VSTORE
  • Maximum Power Point Control
  • Ultralow Quiescent Current: 1.6μA
  • Regulated Output with VIN or VSTORE Above, Below or Equal to the Output
  • Optional Backup Battery Trickle Charger
  • Shelf Mode Disconnect Function to Preserve Battery Shelf Life
  • Burst Mode® Operation
  • Accurate RUN Pin Threshold
  • Power Good Output Voltage Indicator
  • Selectable Peak Current Limit: 90mA/650mA
  • Available in Thermally Enhanced 3mm × 4mm 16-Pin QFN and 20-Pin TSSOP Packages

Typical Application

LTC3106 Typical Application
LTC3106 Typical Application


The LTC®3106 is a highly integrated, ultralow voltage buckboost DC/DC converter with automatic PowerPath management optimized for multisource, low power systems. At no load, the LTC3106 draws only 1.6μA while creating an output voltage up to 5V from either input source.

If the primary power source is unavailable, the LTC3106 seamlessly switches to the backup power source. The LTC3106 is compatible with either rechargeable or primary cell batteries and can trickle charge a backup battery whenever there is an energy surplus available. Optional maximum power point control ensures power transfer is optimized between power source and load. The output voltage and backup voltage, VSTORE, are programmed digitally, reducing the required number of external components. Zero power Shelf Mode ensures that the backup battery will remain charged if left connected to the LTC3106 for an extended time.

Additional features include an accurate turn-on voltage, a power good indicator for VOUT, a user selectable 100mA peak current limit setting for lower power applications, thermal shutdown as well as user selectable backup power and output voltages.


For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
LTC3106EFE#PBF TSSOP-20 FE E 05-08-1950 Yes
LTC3106EFE#TRPBF TSSOP-20 FE E 05-08-1950 Yes
LTC3106EUDC#PBF 3x4 QFN-20 UDC E 05-08-1742 Yes
LTC3106EUDC#TRPBF 3x4 QFN-20 UDC E 05-08-1742 Yes
LTC3106IFE#PBF TSSOP-20 FE I 05-08-1950 Yes
LTC3106IFE#TRPBF TSSOP-20 FE I 05-08-1950 Yes
LTC3106IUDC#PBF 3x4 QFN-20 UDC I 05-08-1742 Yes
LTC3106IUDC#TRPBF 3x4 QFN-20 UDC I 05-08-1742 Yes

LTC3106 Package Drawing
LTC3106 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
LTC3106EFE#PBF TSSOP-20 E $4.46 $3.12 Yes
LTC3106EFE#TRPBF TSSOP-20 E $3.18 Yes
LTC3106EUDC#PBF 3x4 QFN-20 E $4.20 $2.94 Yes
LTC3106EUDC#TRPBF 3x4 QFN-20 E $3.00 Yes
LTC3106IFE#PBF TSSOP-20 I $4.87 $3.41 Yes
LTC3106IFE#TRPBF TSSOP-20 I $3.47 Yes
LTC3106IUDC#PBF 3x4 QFN-20 I $4.63 $3.24 Yes
LTC3106IUDC#TRPBF 3x4 QFN-20 I $3.30 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC2255A LTC3106EUDC Demo Board | Buck-Boost, 0.35V ≤ VIN ≤ 5.1V; Vout = 1.8/2.2/3.3/5V @ 300mA $175.00
DC2321A Dust Energy Harvesting Demo Board with E-Ink Display, designed to connect to the DC2344A or DC2509A $150.00
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Companion Boards

Part Number Description Price Documentation
DC2274A-A SmartMesh IP USB Network Manager, 100 mote capacity $125.00
DC2344A Gleanergy Multi-Source Energy Harvesting Demo Board with Battery Chargers and Life-Extenders for Use with DC2321A Dust Demo Board Contact Factory
DC2509A Gleanergy Multi-Source E H Demo Board with Battery Chargers and Life-Extenders for Use with DC2321A Dust Demo Board $175.00
DC2510A Shield Board for use with DC2321A Dust Demo Board $75.00
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Click here to view our complete list of demo boards


  • Wireless Sensor Networks
  • Home or Office Building Automation
  • Energy Harvesting
  • Remote Sensors

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