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
Nocochips 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	1 Week
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