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LTC3785 Datasheet

LTC3785 Datasheet

10V, High Efficiency, Synchronous, No RSENSE Buck-Boost Controller
Part No.: LTC3785
Page: 20 Pages
Size: 276 KB
Manufacturer: Linear Technology
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Views: 1
Update Time: 2025-04-18 21:09:33
DataSheet: Download

LTC3785 Datasheet Applicable Part

Part No. Packaging SPQ Marking MSL Pins Temp Range Package Description Buy
LTC3785EUF#PBF Tube 91 3785 1 24 -40°C ~ 85°C 24-Lead QFN (4mm x 4mm x 0.75mm)  
LTC3785EUF#TRPBF Reel 2500 3785 1 24 -40°C ~ 85°C 24-Lead QFN (4mm x 4mm x 0.75mm)  
LTC3785IUF#PBF Tube 91 3785 1 24 -40°C ~ 125°C 24-Lead QFN (4mm x 4mm x 0.75mm)  
LTC3785IUF#TRPBF Reel 2500 3785 1 24 -40°C ~ 125°C 24-Lead QFN (4mm x 4mm x 0.75mm)  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LTC3785 Datasheet(PDF)

LTC3785 Datasheet(Picture)

LTC3785 Features

  • Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT
  • 2.7V to 10V Input and Output Range
  • Up to 96% Efficiency
  • Up to 10A of Output Current
  • All N-channel MOSFETs, No RSENSE
  • True Output Disconnect During Shutdown
  • Programmable Current Limit and Soft-Start
  • Optional Short-Circuit Shutdown Timer
  • Output Overvoltage and Undervoltage Protection
  • Programmable Frequency: 100kHz to 1MHz
  • Selectable Burst Mode® Operation
  • Available in 24-Lead (4mm × 4mm) Exposed Pad QFN Package

LTC3785 Applications

  • Palmtop Computers
  • Handheld Instruments
  • Wireless Modems
  • Cellular Telephones

LTC3785 Description

The LTC3785 is a high power synchronous buck-boost controller that drives all N-channel power MOSFETs from input voltages above, below and equal to the output voltage. With an input range of 2.7V to 10V, the LTC3785 is well suited for a wide variety of single or dual cell Li-Ion or multicell alkaline/NiMH applications.

The operating frequency can be programmed from 100kHz to 1MHz. The soft-start time and current limit are also programmable. The soft-start capacitor doubles as the fault timer which can program the IC to latch off or recycle after a determined off time. Burst Mode operation is user controlled and can be enabled by driving the MODE pin high.

Protection features include foldback current limit, shortcircuit and overvoltage protection.

LTC3785 Related Parts

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