PT7705A

Voltage - Output 3:	--
Base Part Number:	PT7705
Size / Dimension:	--
Package / Case:	27-SIP Module, Horizontal
Mounting Type:	Through Hole, Horizontal
Efficiency:	89%
Operating Temperature:	0°C ~ 85°C
Features:	--
Applications:	ITE (Commercial)
Current - Output (Max):	18A
Series:	PT7705
Voltage - Output 2:	--
Voltage - Output 1:	1.3 ~ 3.5 V
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Type:	Non-Isolated PoL Module
Part Status:	Obsolete
Packaging:	Tray

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DC DC Converters

DC-DC converters are a type of power conversion technology used to convert one DC voltage to another. They are useful in a wide variety of applications including battery charger systems, power supply systems, automobile electronics, solar cells, and aerospace applications. This article will discuss the PT7705A application field and working principle and how it fits into the DC-DC conversion technology.The PT7705A is a high-power DC-DC converter from TDK, a leading supplier of power conversion products for industrial, automotive, electronic, and electronic systems applications. It is a step-up type DC-DC converter with an internal current sense resistor. It is capable of converting an input DC voltage of 4.5V to 24V into an output of 10V to 40V depending on the current configuration options. The converter also features soft-start, which helps to prevent inrush currents and ensure minimum power dissipation during start-up.The PT7705A is designed for reliable operation in a range of harsh environmental conditions and is capable of operating in temperatures ranging from -40°C to +85°C. The device also features over-voltage, under-voltage and over-temperature protection, which help to ensure reliable operation and protection against surges. The device also has a low quiescent current of less than 5mA, making it an ideal solution for low-power applications.The PT7705A is ideal for applications requiring a high step-up or boost voltage, such as powering up a variety of automotive application, electronic motor controls, automatic ballast starters or controlling a low-voltage LED system. The device’s low quiescent current and high power efficiency makes it a great choice for applications where minimizing power loss due to heat is a consideration.When it comes to the working principle of the PT7705A, it is based on a switching technique called Pulse-Width Modulation (PWM). The device uses a DC power supply to produce an AC signal, which is then used to switch the power transistors on and off in a specific sequence. This process creates a digital signal that is amplified into a high voltage output.It is important to note that the PT7705A has an internal current sense resistor, which helps to ensure that the switching process of the digital signals is regulated and does not exceed a certain level. The current sense resistor also helps to reduce the power dissipation in the power transistors, which in turn leads to improved efficiency.In conclusion, the PT7705A is an ideal device for applications such as automotive, electronic motor controls, and low-voltage LED systems that require a high boost voltage. The device not only features over-voltage, under-voltage, and over-temperature protection, but it also features a low quiescent current and high power efficiency. The working principle of the device is based on PWM, which creates a digital signal that is amplified to a high voltage output. The internal current sense resistor helps to regulate the switching process and reduce the power dissipation of the system.

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