U642B-MY

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Applications:	Automotive Wipe/Wash Control
Current - Supply:	10mA
Voltage - Supply:	9 V ~ 16.5 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Through Hole
Package / Case:	8-DIP (0.300", 7.62mm)
Supplier Device Package:	8-DIP
Base Part Number:	U642B

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U642B-MY Introduction U642B-MY is an integrated power management integrated circuit (PMIC) from Linear technology. It is specially designed for information technology (IT) and consumer electronics applications, such as notebooks, tablets, and embedded systems as well as industrial, automotive and aerospace/defense applications. This power integrated circuit is capable of providing efficient power conversion and hot swapping. U642B-MY ApplicationsThe U642B-MY is designed to provide a number of advantages over traditional power management integrated circuits (PMICs). The U642B-MY can be used in applications where the output power is always changing, such as notebooks and tablets, since it features current and voltage measurement feedback control to help regulate and optimize the output power. It can also be used in applications where high efficiency power conversion is desired, such as server and storage systems, since it features highly efficient synchronous buck and boost converters.The U642B-MY can also be used in applications that require hot swapping of output signals, such as real-time video streaming, automotive applications, embedded systems, and consumer electronics. It includes an intelligent switch over feature that can detect when the output power is low and switch the output signal to an alternate power source, allowing the system to maintain uninterrupted operation.U642B-MY FeaturesThe U642B-MY features a 14-bit Sigma-Delta ADC and output current buffer, allowing the U642B-MY to provide precise voltage and current measurements of output power. This enables the U642B-MY to provide precise control of the output power and reduce power losses due to long lead resistance.The U642B-MY also includes multiple input voltage detection and voltage scaling, allowing the U642B-MY to be used in multiple input applications. It also includes temperature sensing, providing the ability to shut down the output if the temperature exceeds a certain threshold.U642B-MY Working PrincipleThe U642B-MY uses a buck-boost converter topology for power conversion. This topology allows the U642B-MY to regulate the output voltage and current, ensuring the output voltage is within a specified range.The U642B-MY utilizes a current feedback control loop to accurately monitor the output current. This loop allows the U642B-MY to adjust the output voltage according to changes in the output current.The U642B-MY also features an intelligent switch over feature, allowing the U642B-MY to detect when the output voltage is lower than a set threshold and automatically switch over to an alternate power source. This allows the U642B-MY to continuously provide an efficient power conversion, even when the input power is depleted or unstable. ConclusionThe U642B-MY from Linear Technology is an integrated power management integrated circuit (PMIC) that is specially designed for information technology (IT) and consumer electronic systems. It is capable of providing efficient power conversion, hot swapping of output signals, and precise output power control. This makes the U642B-MY the ideal choice for applications where long lead resistance and high-efficiency power conversion are desired.

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