LT1614IMS8#TRPBF

Voltage - Output (Min/Fixed):	-1.24V
Base Part Number:	LT1614
Supplier Device Package:	8-MSOP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	600kHz
Current - Output:	750mA (Switch)
Voltage - Output (Max):	-24V
Series:	--
Voltage - Input (Max):	5V
Voltage - Input (Min):	1V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Boost, Charge Pump, Cuk
Output Configuration:	Negative
Function:	Step-Up, Step-Up/Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LT1614IMS8#TRPBF Application Field and Working Principle of DC DC Switching Regulators

A DC-DC switching regulator is an electrical circuit that requires an input voltage to be converted to an output voltage with an isolated mixing medium. DC-DC switching regulators take advantage of the highly efficient operation characteristics of modern switching power supply technologies. LT1614IMS8#TRPBF is one of them.ApplicationLT1614IMS8#TRPBF is a monolithic switching regulator which is suitable for use in many different applications, such as personal computers, automotive, and industrial control systems. Most DC-DC switching regulators combine the power factor correction (PFC) and voltage regulator functions together, and LT1614IMS8#TRPBF have many advantages over traditional linear regulators. The regulator can operate over a wide input voltage range and provides quiescent current protection. With its low voltage dropout, it can operate with load currents down to a few milliamps, which is suitable for drives with microprocessors, digital signal processors, and other logic devices.Working PrincipleThe working principle of LT1614IMS8#TRPBF is based on the idea to switch a certain amount of time a coil over a certain power device (usually a transistor or MOSFET) and the inductance of the coil. This causes an alternating current flow through the coil, which after a certain period of time is reduced to zero. At this stage the coil induces an output current on the other side, resulting in the desired output voltage.The LT1614IMS8#TRPBF circuit has two parts: a power stage, which includes a power switch (MOSFET) and primary and synchronous rectifiers, and a control module with the driver circuit. The LT1614IMS8#TRPBF operates in two modes: continuous conduction mode (CCM) and discontinuous conduction mode (DCM). In CCM, the current in the primary winding of the power transformer always stays above zero. In DCM, the current in the primary winding of the power transformer goes below zero, that is it goes to zero and then goes negative.The power MOSFET is driven by a control module with an onboard control circuit. The control circuit forms a voltage control loop, which monitors the feedback voltage and adjusts the duty cycle of the MOSFET to obtain the desired output voltage. The control circuit also has features such as overcurrent protection, overvoltage protection, and under voltage protection, to protect the regulator\'s components from damage.ConclusionLT1614IMS8#TRPBF is a monolithic switching regulator with excellent performance characteristics. It operates over a wide input voltage range and is suitable for drives with microprocessors, digital signal processors, and other logic devices. It is a DC-DC switching regulator that combines the power factor correction (PFC) and voltage regulator functions together, and it has built-in protection features such as overvoltage and undervoltage protection. The LT1614IMS8#TRPBF works on the principle of switching a certain amount of time an inductive coil over a certain power device, resulting in an alternating current flow through the coil and eventually forming a desired output voltage.

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