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LT8705 Datasheet

LT8705 Datasheet

80V VIN and VOUT Synchronous 4-Switch Buck-Boost DC/DC Controller
Part No.: LT8705
Page: 44 Pages
Size: 461 KB
Manufacturer: Linear Technology
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Views: 1
Update Time: 2025-04-02 14:34:01
DataSheet: Download

LT8705 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LT8705EUHF#PBF Tube 52 8705 1 38 -40°C ~ 125°C 38-Lead (5mm × 7mm) Plastic QFN  
LT8705EUHF#TRPBF Reel 2500 8705 1 38 -40°C ~ 125°C 38-Lead (5mm × 7mm) Plastic QFN  
LT8705IUHF#PBF Tube 52 8705 1 38 -40°C ~ 125°C 38-Lead (5mm × 7mm) Plastic QFN  
LT8705IUHF#TRPBF Reel 2500 8705 1 38 -40°C ~ 125°C 38-Lead (5mm × 7mm) Plastic QFN  
LT8705EFE#PBF Tube 50 LT8705FE 1 38 -40°C ~ 125°C 38-Lead Plastic TSSOP  
LT8705EFE#TRPBF Reel 2000 LT8705FE 1 38 -40°C ~ 125°C 38-Lead Plastic TSSOP  
LT8705IFE#PBF Tube 50 LT8705FE 1 38 -40°C ~ 125°C 38-Lead Plastic TSSOP  
LT8705IFE#TRPBF Reel 2000 LT8705FE 1 38 -40°C ~ 125°C 38-Lead Plastic TSSOP  
LT8705HFE#PBF Tube 50 LT8705FE 1 38 -40°C ~ 150°C 38-Lead Plastic TSSOP  
LT8705HFE#TRPBF Reel 2000 LT8705FE 1 38 -40°C ~ 150°C 38-Lead Plastic TSSOP  
LT8705MPFE#PBF Tube 50 LT8705FE 1 38 -55°C ~150°C 38-Lead Plastic TSSOP  
LT8705MPFE#TRPBF Reel 2000 LT8705FE 1 38 -55°C ~150°C 38-Lead Plastic TSSOP  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LT8705 Datasheet(PDF)

LT8705 Datasheet(Picture)

LT8705 Features

  • Single Inductor Allows VIN Above, Below, or Equal to Regulated VOUT
  • VIN Range 2.8V (Need EXTVCC > 6.4V) to 80V
  • VOUT Range: 1.3V to 80V
  • Quad N-Channel MOSFET Gate Drivers
  • Synchronous Rectification: Up to 98% Efficiency
  • Input and Output Current Monitor Pins
  • Synchronizable Fixed Frequency: 100kHz to 400kHz
  • Integrated Input Current, Input Voltage, Output and Output Voltage Feedback Loops
  • Clock Output Usable To Monitor Die Temperature
  • Available in 38-Lead (5mm × 7mm) QFN and TSSOP Packages with the TSSOP Modified for Improve Voltage Operation

LT8705 Applications

  • High Voltage Buck-Boost Converters
  • Input or Output Current Limited Converters

LT8705 Description

The LT8705 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage. The part has integrated input current, input voltage, output current and output voltage feedback loops. With a wide 2.8V to 80V input and 1.3V to 80V output range, the LT8705 is compatible with most solar, automotive, telecom and battery-powered systems.

The LT8705 includes servo pins to indicate which feedback loops are active. The MODE pin selects among Burst Mode® operation, discontinuous or continuous conduction mode at light loads. Additional features include a 3.3V/12mA LDO, a synchronizable fixed operating frequency, onboard gate drivers, adjustable UVLO, along with input and output current monitoring with programmable maximum levels.

LT8705 Related Parts

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