KA378R33TU

Current - Output:	3A
Base Part Number:	KA378R33
Supplier Device Package:	TO-220F-4L
Package / Case:	TO-220-4 Full Pack
Mounting Type:	Through Hole
Operating Temperature:	-20°C ~ 80°C
Protection Features:	Over Current, Over Temperature, Over Voltage, Short Circuit
Control Features:	--
PSRR:	--
Current - Quiescent (Iq):	10mA
Series:	--
Voltage Dropout (Max):	0.5V @ 3A
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	35V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tube

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The KA378R33TU is a voltage regulator that falls into the PMIC (Power Management Integrated Circuit) Voltage Regulators - Linear category. Voltage regulators are responsible for regulating the supply voltage in various electronic controls, and there are different categories of regulators, including linear, integrated and switch-mode.The KA378R33TU is a linear regulator, which essentially uses resistors, diodes and transistors to convert and regulate a given input voltage. Unlike similar integrated or switch-mode regulators, linear regulators have relatively simple functioning principles but have mostly been replaced by integrated and switch-mode regulators due to their lower efficiency and large voltage drops.Designed and manufactured by Fairchild Semiconductor, the KA378R33TU is a 3-terminal adjustable voltage regulator with a wide input voltage range of 3V to 40V and adjustable output voltage between 1.5V and 33V depending on the end-user’s requirements. The device is designed to provide accurate and precise voltage regulation with a typical drop-out voltage of 2V and a maximum output current of 3A. It features a temperature range of -40°C to +125°C and short circuit protection for added protection.The KA378R33TU is well-suited for various industries, including consumer electronics, medical instruments, telecommunications, computing, automotive and aeronautical, among others. It has an exceptionally low quiescent current-draw of only 5μA, which makes it an ideal choice for industrial and consumer applications that require minimum power dissipation.The KA378R33TU is typically used in a wide variety of electronic equipment, such as security systems, oscilloscopes, medical instruments, industrial automation and telecommunication systems, as well as consumer electronics. It has proved to be extremely reliable and efficient in delivering an exact amount of regulated power for prolonged periods of time, which makes it a preferred choice for most applications.The KA378R33TU typically works by comparing the output voltage with a reference voltage. This comparison is accomplished by a differential amplifier with the negative terminal connected to the output voltage, and the positive terminal connected to the reference voltage by the potential divider network. A feedback network senses the output voltage and the differential amplifier compares it with the reference voltage, and then provides a signal to the output control element to keep the output voltage at a constant level.The device also features a maximum voltage current limiting circuit that protects the device from load current overloads and to prevent sudden catastrophic failures due to excessive current flow. This can be useful in applications that require high power output.In conclusion, the KA378R33TU is a linear voltage regulator that provides accurate and precise voltage regulation with a wide input voltage range of 3V to 40V. It is well-suited for various industries and applications that require minimum power dissipation. The device features a temperature range of -40°C to +125°C and a maximum voltage current limiting circuit that protects the device from load current overloads.

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