LTC3707EGN#TRPBF

Frequency - Switching:	220kHz
Base Part Number:	LTC3707
Supplier Device Package:	28-SSOP
Package / Case:	28-SSOP (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Enable, Frequency Control, Power Good, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	99.4%
Series:	--
Voltage - Supply (Vcc/Vdd):	4.5 V ~ 28 V
Output Phases:	2
Number of Outputs:	2
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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The LTC3707EGN#TRPBF is a DC-DC switching controller IC designed and manufactured by the Linear Technology Corporation, a leader in the power management and energy harvesting semiconductor industry. The DC-DC switching controller IC is designed to regulate the output voltage of a buck, boost or single-ended secondary-side synchronous rectifier (SR) converter. The SR converter is an ultra-low quiescent current solution which enables high efficiency operation. The LTC3707EGN#TRPBF features an innovative start-up circuit with current and voltage mode control which allows it to achieve fast transient response, improved power efficiency, and excellent light load efficiency. Additionally, this device provides an adjustable output voltage as low as 0.6V and up to 5.5V as well as an output current limit of 2A. The LTC3707EGN#TRPBF offers two unique features which make it a powerful choice for a variety of applications. Firstly, this device features a wide range of operating frequency options from 200kHz-2.85MHz and secondly, it comes with the innovative Auto-TrackTM output voltage tracking feature.Applications:The LTC3707EGN#TRPBF is an ideal choice for a variety of applications due to its wide operating frequency range and Auto-TrackTM output voltage tracking feature. Such applications include:• Desktop and Notebook PC Power Supplies• SSD Power Supplies• Low Voltage Processor Power Supplies• Server and Data Center Power Supplies• Automotive and Industrial Applications• Embedded Systems• Battery Powered DevicesWorking principle:The LTC3707EGN#TRPBF is designed to regulate the output voltage of a buck, boost or single-ended secondary-side synchronous rectifier (SR) converter. The device consists of two primary components: the error amplifier, which determines the output voltage of the converter, and the main current regulator, which controls the power switch’s on-off cycle to achieve this regulated voltage. The error amplifier receives feedback from the output of the converter and compares it to the reference voltage. If the output voltage is higher than the reference voltage, it sends a signal to the main current regulator to turn off the power switch. On the other hand, if the output voltage is lower than the reference voltage, then the error amplifier sends a signal to the main current regulator to turn on the power switch. The main current regulator also includes features such as peaked current mode control, frequency compensation options, slope compensation, and adjustable current limit depending on the operating frequency being used. The Auto-TrackTM output voltage tracking feature is also included. It works by sending a signal to the main current regulator according to the output voltage of the converter, allowing it to adjust the on-off cycle of the power switch accordingly. This feature helps maintain a regulated output voltage in spite of changing load conditions. In conclusion, the LTC3707EGN#TRPBF DC-DC switching controller IC is an highly efficient device with features such as adjustable output voltage, wide range of operating frequency options, and an innovative Auto-TrackTM output voltage tracking feature. It is an ideal choice for applications such as low voltage processor power supplies, server and data center power supplies, and embedded systems.

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