LTC3891IFE#TRPBF

Frequency - Switching:	105kHz ~ 835kHz, 350kHz ~ 535kHz
Base Part Number:	LTC3891
Supplier Device Package:	20-TSSOP-EP
Package / Case:	20-TSSOP (0.173", 4.40mm Width) Exposed Pad
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	99%
Series:	--
Voltage - Supply (Vcc/Vdd):	4 V ~ 60 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LTC3891IFE#TRPBF Application Field and Working Principle

In the field of voltage regulators, DC-DC switching controllers are used for generating stable power supply for microprocessors and integrated circuits. A popular device in this domain is the Linear Technology LTC3891IFE#TRPBF. This device offers a high performance, high power scalability and robust field programmability.The LTC3891IFE#TRPBF device is a step-down switching voltage regulator that supports a wide input voltage range of 4.5V to 17V. It is capable of providing up to 20V of output voltage. The maximum output current is 10A. The device has integrated cooling and power transistors which help to keep the power dissipation under control.The LTC3891IFE#TRPBF operates in a synchronous mode, which means that the switching frequency is controlled by a fixed control voltage. The frequency can be adjusted from 250kHz to 1.25MHz with an external resistor.The LTC3891IFE#TRPBF features a wide range of protection features such as short-circuit protection, over-temperature protection and over-voltage protection. The device also features an adjustable soft-start function which can be used to reduce the inrush current during start-up.The LTC3891IFE#TRPBF also has an advanced phase-locked loop (PLL) which is used to synchronize the switching frequency with an adjustable external reference clock. The PLL can be programmed and monitored using the onboard I2C interface.The LTC3891IFE#TRPBF also utilizes an adaptive on-time control scheme which ensures faster and more accurate monitoring of the switching waveforms. This enables higher efficiency and improved power supply noise, which results in higher system reliability.The LTC3891IFE#TRPBF is a very efficient voltage regulator. Considering its wide input voltage range, high output current and wide range of protection and control features, this device is ideal for applications such as DC-DC voltage conversion, buck and boost power supplies, audio amplifiers, computing and networking.In general, the LTC3891IFE#TRPBF is an efficient and reliable step-down voltage regulator which offers a wide operating voltage range, high efficiency, robust protection, precise control and a wide range of protection features. Its synchronous mode of operation makes it ideal for applications which require precise control of output voltage and current.

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