LT8364IMSE#PBF

Voltage - Output (Min/Fixed):	--
Base Part Number:	LT8364
Supplier Device Package:	16-MSOP-EP
Package / Case:	16-TFSOP (0.118", 3.00mm Width) Exposed Pad, 12 Leads
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	--
Frequency - Switching:	2MHz
Current - Output:	4A (Switch)
Voltage - Output (Max):	60V (Switch)
Series:	--
Voltage - Input (Max):	60V
Voltage - Input (Min):	2.8V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Boost, SEPIC
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Active
Packaging:	Tube

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LT8364IMSE#PBF Application Field and Working Principle

Introduction

The LT8364IMSE#PBF is a high current DC/DC switching regulator from Linear Technology. It features a 3A/30V internal switch, high-efficiency synchronous rectification, spread spectrum switching, and a wide input voltage range. This makes it ideal for automotive applications, such as under seat heater electronic control systems, hybrid electric powertrains, and mini-motherboard solutions.

Category: PMIC - Voltage Regulators - DC DC Switching Regulators

Features

The LT8364IMSE#PBF offers a variety of power management capabilities. It contains a 3A/30V internal switch, allowing for high currents to be handled with minimal external components. The synchronous rectification controller provides high efficiency, and the spread spectrum switching reduces EMI emissions without sacrificing efficiency. The wide input voltage range makes it well suited for automotive applications.

Applications

The LT8364IMSE#PBF is ideally suited for automotive applications. It can be used for seat heater electronic control systems, hybrid electric powertrains, and mini-motherboard solutions. It is also well suited for communications systems that require high current and efficiency, such as land mobile, base station, and access point applications.

Working Principle

The LT8364IMSE#PBF is a buck-boost switching regulator, which means it can both step-up (boost) and step-down (buck) the input voltage to the desired output voltage. It regulates the output voltage by switching the internal MOSFET at a constant frequency, which is set by an internal oscillator. The duty cycle and frequency of the switching is controlled by an on-chip error amplifier, which compares a reference voltage to the voltage at the feedback pin. The output voltage is regulated by varying the duty cycle of the MOSFET switch, which is proportional to the ratio of the reference voltage to the feedback voltage. If the output voltage is too low, the error amplifier increases the duty cycle, which increases the output voltage. If the output voltage is too high, the error amplifier decreases the duty cycle, which decreases the output voltage. The synchronous rectification controller then turns on and off the synchronous rectifier to reduce voltage drop and improve efficiency.The other components of the LT8364IMSE#PBF ensure that the switching regulator works correctly and efficiently. The current limit feature prevents over-current conditions which can damage or destroy the switch or other components in the system. The soft-start feature keeps the voltage spike on the output low at power-up to protect the components. The thermal shutdown feature protects the LT8364IMSE#PBF from excessive heat.

Conclusion

The LT8364IMSE#PBF is a high current DC/DC switching regulator from Linear Technology, it offers a variety of power management capabilities for use in automotive systems and communications systems. It utilizes a 3A/30V internal switch, synchronous rectification, and spread spectrum switching to reduce EMI emissions. Its wide input voltage range combined with its buck-boost capability make it ideal for a variety of applications.

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