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  • LTC3857IUH#PBF

LTC3857IUH#PBF

32 Terminals 4V~38V 32-Pin LTC3857 DC to DC converter ICSWITCHING CONTROLLER 2 Outputs 105kHz~835kHz 350kHz~535kHz Transistor Driver


  • Manufacturer: Linear Technology/Analog Devices
  • Origchip NO: 471-LTC3857IUH#PBF
  • Package: 32-WFQFN Exposed Pad
  • Datasheet: PDF
  • Stock: 325
  • Description: 32 Terminals 4V~38V 32-Pin LTC3857 DC to DC converter ICSWITCHING CONTROLLER 2 Outputs 105kHz~835kHz 350kHz~535kHz Transistor Driver (Kg)

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Details

Tags

Parameters
Factory Lead Time 8 Weeks
Lifecycle Status PRODUCTION (Last Updated: 3 weeks ago)
Mounting Type Surface Mount
Package / Case 32-WFQFN Exposed Pad
Surface Mount YES
Number of Pins 32
Operating Temperature -40°C~125°C TJ
Packaging Tube
Published 2012
Series PolyPhase®
JESD-609 Code e3
Part Status Active
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Number of Terminations 32
ECCN Code EAR99
Terminal Finish Matte Tin (Sn)
Subcategory Switching Regulator or Controllers
Technology CMOS
Terminal Position QUAD
Peak Reflow Temperature (Cel) 260
Terminal Pitch 0.5mm
Time@Peak Reflow Temperature-Max (s) 30
Base Part Number LTC3857
Function Step-Down
Number of Outputs 2
Output Voltage 24V
Output Type Transistor Driver
Input Voltage-Nom 12V
Number of Channels 1
Analog IC - Other Type SWITCHING CONTROLLER
Output Configuration Positive
Output Current 25A
Voltage - Supply (Vcc/Vdd) 4V~38V
Control Features Current Limit, Enable, Frequency Control, Phase Control, Power Good, Soft Start, Tracking
Input Voltage (Min) 4V
Topology Buck
Control Mode CURRENT-MODE
Frequency - Switching 105kHz~835kHz 350kHz~535kHz
Input Voltage (Max) 38V
Control Technique PULSE WIDTH MODULATION
Synchronous Rectifier Yes
Switcher Configuration PHASE-SHIFT
Max Frequency 850kHz
Duty Cycle (Max) 99.4%
Clock Sync No
Height Seated (Max) 0.8mm
Length 5mm
Width 5mm
REACH SVHC No SVHC
RoHS Status ROHS3 Compliant

LTC3857IUH#PBF Overview


It comes in a 32-WFQFN Exposed Pad package, so switching controller can be used for most applications. For 2 outputs, the dc motor controller is appropriate. There is a Tube solid enclosure around the pmic. A total of Transistor Driver dc switching's outputs can be handled by it. DC control operates at 4V~38V volts and has 4V~38V supply voltage. A -40°C~125°C TJ dc switcher is not a problem. Using this switching controller, it is possible to switch at 105kHz~835kHz 350kHz~535kHz. The Surface Mount value makes it suitable for general dc dc regulator. Switching control is made easier with the dcdc regulator's Current Limit, Enable, Frequency Control, Phase Control, Power Good, Soft Start, Tracking. SWITCHING CONTROLLER analog IC connects the switch converters. QUAD are the position of the terminal of the switching converters. The 32 terminations can be used for a wide range of dc switching. These dc dc converter ics adapt several control methods, including PULSE WIDTH MODULATION. The nominal DC switcher's voltage input is 12V. Searching "LTC3857" will return other relevant dc to dc converter ics. Pins number 32 of switching converter in total. There is a particular type of Switching Regulator or Controllers in switching converter. Input voltage of dc dc voltage regulator should be 4V. DC regulator outputs 24V voltage based on test statistics. It should be noted that the dc to dc regulator only accepts 38V voltage as input voltage. If you are starting a new project, you should note the dc dc regulator's typical output current is 25A. There is a maximum frequency of 850kHz on this dc regulators. The dc to dc voltage regulator belongs to the PolyPhase? series. It is recommended that there be 1 channels for high-quality communication.

LTC3857IUH#PBF Features


Transistor Driver Outputs
Switching Frequency: 105kHz~835kHz 350kHz~535kHz
Current Limit, Enable, Frequency Control, Phase Control, Power Good, Soft Start, Tracking
PULSE WIDTH MODULATION

LTC3857IUH#PBF Applications


There are a lot of Linear Technology/Analog Devices LTC3857IUH#PBF DC to DC converter applications.

  • Refrigerators of central air conditioners
  • Access control systems
  • Automation technology
  • Ball screw pair
  • Automatic testing equipment
  • Hydraulic presses
  • Remotely powered electric motors
  • Electric water heaters
  • Series voltage regulation circuits
  • Communication system