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LTC3857EGN-1#PBF

28 Terminals 4V~38V 28-Pin LTC3857 DC to DC converter ICDUAL SWITCHING CONTROLLER 2 Outputs 105kHz~835kHz 350kHz~535kHz Transistor Driver


  • Manufacturer: Linear Technology/Analog Devices
  • Origchip NO: 471-LTC3857EGN-1#PBF
  • Package: 28-SSOP (0.154, 3.90mm Width)
  • Datasheet: PDF
  • Stock: 766
  • Description: 28 Terminals 4V~38V 28-Pin LTC3857 DC to DC converter ICDUAL SWITCHING 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 28-SSOP (0.154, 3.90mm Width)
Surface Mount YES
Number of Pins 28
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 28
ECCN Code EAR99
Terminal Finish Matte Tin (Sn)
Subcategory Switching Regulator or Controllers
Technology CMOS
Terminal Position DUAL
Terminal Form GULL WING
Peak Reflow Temperature (Cel) 260
Terminal Pitch 0.635mm
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 DUAL SWITCHING CONTROLLER
Output Configuration Positive
Voltage - Supply (Vcc/Vdd) 4V~38V
Control Features Enable, Frequency 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
Length 9.9mm
Width 3.9mm
RoHS Status ROHS3 Compliant

LTC3857EGN-1#PBF Overview


It comes in a 28-SSOP (0.154, 3.90mm Width) package, so switching controller can be used for most applications. For outputs of 2, this dc motor controller is suitable. Packaged in solid enclosures, this pmic has a Tube rating. The system can process Transistor Driver dc switching's outputs (s). DC control operates at 4V~38V volts and has 4V~38V supply voltage. Worked in an dc switcher with a -40°C~125°C TJ rating. In this switching controller, the switch can be set to 105kHz~835kHz 350kHz~535kHz. dc dc regulator can be generalized using Surface Mount. The dcdc regulator features Enable, Frequency Control, Power Good, Soft Start, Tracking for efficient switching control. A DUAL SWITCHING CONTROLLER analog IC is connected to the switch converters. Thare switching converters has a terminal (s) at DUAL . The 28 terminations can be used for a wide range of dc switching. PULSE WIDTH MODULATION is an example of one of the control techniques these dc dc converter ics adapt. DC switcher's input voltageis set to 12V. Search for "LTC3857" to find other relevant dc to dc converter ics. Pins number 28 of switching converter in total. Switching converter type is specifically Switching Regulator or Controllers. 4V should be the minimum input voltage for the dc dc voltage regulator. DC regulator outputs 24V voltage based on test statistics. It should be fully noted that the dc to dc regulator only accepts 38V input voltage at most. 850kHz is the maximum frequency of this dc regulators. Basically, it's a dc to dc voltage regulator from the PolyPhase? series. For high-quality communication, there are 1 channels.

LTC3857EGN-1#PBF Features


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

LTC3857EGN-1#PBF Applications


There are a lot of Linear Technology/Analog Devices LTC3857EGN-1#PBF DC to DC converter applications.

  • Lathes
  • Bending machines
  • Hydraulic presses
  • Machining centers
  • Nuclear power plants
  • Magnetohydrodynamic power
  • Flaw detection equipment
  • Precision electronic equipment
  • Various precision measuring instruments
  • CMM