LT3741EFE-1#TRPBF

Frequency - Switching:	200kHz ~ 1MHz
Base Part Number:	LT3741
Supplier Device Package:	20-TSSOP
Package / Case:	20-TSSOP (0.173", 4.40mm Width) Exposed Pad
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Enable, Frequency Control, Soft Start
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	--
Series:	--
Voltage - Supply (Vcc/Vdd):	6 V ~ 36 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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Introduction

The LT3741EFE-1#TRPBF is a high-accuracy, high-efficiency, single-output, PWM switch mode controller designed for use in free-air environment, including applications in industrial, medical and automotive space. This controller is designed to replace the existing and commonly used dc-dc switching regulators and linear power supplies, as well as meeting the requirements of a safe switching power supply, while providing higher efficiency, greater accuracy and lower power dissipation.

Features

The LT3741EFE-1#TRPBF has a wide range of features that make it suitable for a variety of applications. Its high efficiency and accuracy, as well as its low voltage drop, make it ideal for applications requiring high power and accuracy such as in medical and industrial devices. The LT3741EFE-1#TRPBF is able to sense the input voltage and output current, allowing current and power sequencing, accurate current and overcurrent monitoring, and thermal shutdown functionality. In addition, it is also capable of providing a wide range of operating frequencies and pulse-width modulation (PWM) modes.

Application Fields

The LT3741EFE-1#TRPBF is suitable for a wide range of applications due to its high efficiency and accuracy. It is ideal for providing low-voltage, high-accuracy power supplies to medical and industrial devices. It is also suitable for automotive applications such as lights and electrical systems, where it provides high power in a compact, low-voltage solution. It can also be used as a voltage regulator in battery-powered applications and as a current shunt regulator in power supplies.

Working Principle

The LT3741EFE-1#TRPBF is based on the PWM switch mode control method. The feedback control loop adjusts the pulse width of the input power supply to the maximum duty cycle that is necessary to supply the required output voltage. It utilizes peak current mode control, which enables it to sense the input voltage, current, and output power, allowing very precise control of the power supply.The LT3741EFE-1#TRPBF uses an internal oscillator to generate a periodic signal with the desired frequency. The amplitude of this oscillator is compared with a reference signal. The duty cycle of the PWM pulse is modified according to the comparison of these two signals. This provides precise control of the power delivered to the output.The LT3741EFE-1#TRPBF also utilizes a temperature controller that ensures safe operating temperature conditions by restricting the output power at high temperatures. This helps to reduce component aging and improve durability.

Conclusion

The LT3741EFE-1#TRPBF is a high-accuracy, high-efficiency, single-output, PWM switch mode controller designed for use in free-air environment, including applications in industrial, medical, and automotive space. This controller is designed to replace the existing and commonly used dc-dc switching regulators and linear power supplies, while providing greater efficiency, accuracy, and lower power dissipation. It is capable of providing accurate current and power sequencing, overcurrent monitoring, and thermal shutdown protections. The LT3741EFE-1#TRPBF is suitable for a wide range of applications, including but not limited to medical and industrial devices and automotive lights and electrical systems. It is based on the PWM switching mode control method and utilizes peak current mode control, allowing precise control of the output voltage and current.

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