PT4105C

Current - Output (Max):	1.25A
Base Part Number:	PT4105
Size / Dimension:	1.67" L x 1.48" W x 0.34" H (42.4mm x 37.6mm x 8.6mm)
Package / Case:	6-SMD Module, 5 Leads
Mounting Type:	Surface Mount
Efficiency:	82%
Operating Temperature:	-40°C ~ 85°C
Features:	Remote On/Off, OTP, SCP
Applications:	ITE (Commercial)
Voltage - Isolation:	1.5kV
Power (Watts):	15W
Series:	PT4100
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	12V
Voltage - Input (Max):	40V
Voltage - Input (Min):	18V
Number of Outputs:	1
Type:	Isolated Module
Part Status:	Obsolete
Packaging:	Tray

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Introduction
DC-DC converters are widely used in a range of applications, from those that use relatively small amounts of power to those that use large amounts. The PT4105C is a popular DC-DC converter that can be used in a variety of applications. This article will provide an overview of the PT4105C\'s application fields and the working principle behind it.Application Fields
The PT4105C is a dual-channel step-down DC-DC converter that is capable of supplying up to 4A of current. It can be used in applications that require high current in a limited space, like laptops, tablets, and other handheld devices. The PT4105C is popularly used in automotive applications, where it can operate efficiently in temperatures ranging from -40°C to +125°C. It can also be used in industrial and home automation applications.Working Principle
The working principle of the PT4105C is based on two main components: the high-frequency PWM controller and the synchronous rectifier. The PWM controller is responsible for generating a switching signal, which is used to control the duty cycle of the converter. The synchronous rectifier, on the other hand, is used to prevent the current from reverse flowing through the converter during switching transitions.The PT4105C operates by taking an input voltage ranging from 4.5V to 30V, and stepping it down to a regulated output voltage of 0.8V to 28V. It has a switching frequency of 500KHz, allowing for fast and efficient conversion.The PT4105C is equipped with a number of features, such as over-current and over-temperature protection, as well as output voltage tracking and trimming. These features make the PT4105C ideal for various high-current applications.Conclusion
The PT4105C is a versatile DC-DC converter that can be used in a variety of applications. Its wide input voltage range and fast switching frequency make it an attractive option for applications that require high current in limited space. The PT4105C is also equipped with several features such as over-current and over-temperature protection, output voltage tracking and trimming, making it suitable for industrial, automotive, and other applications.

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