BA17809CP-E2

Current - Output:	1A
Base Part Number:	BA178
Supplier Device Package:	TO-220CP-3
Package / Case:	TO-220-3 Cropped Leads
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C
Protection Features:	--
Control Features:	--
PSRR:	64dB (120Hz)
Current - Supply (Max):	6mA
Current - Quiescent (Iq):	4.5mA
Series:	--
Voltage Dropout (Max):	2V @ 1A (Typ)
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	9V
Voltage - Input (Max):	26V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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IntroductionBA17809CP-E2 is a type of linear voltage regulator, manufactured by ROHM Semiconductor, which provides a stable regulated voltage for a variety of applications. This voltage regulator, which comes in a dual in line package, is available in two versions: an adjustable type and a fixed type.Product FeaturesThe BA17809CP-E2 regulator provides superior performance, low power dissipation and voltage regulation over a wide input voltage range. This regulator comes with built-in protection circuits, such as over-current protection and thermal shutdown, which make it suitable for more demanding and sensitive applications. The output voltage can be adjusted between 1.5 and 14V. It is also capable of providing low-ripple noise and high efficiency.ApplicationsThe BA17809CP-E2 is suitable for many applications, including power supply systems, peripheral systems, precision instrumentation and audio systems. It can also be used in automotive, industrial electronics and communications systems.Working PrincipleThe BA17809CP-E2 linear voltage regulator uses a PNP pass transistor as a feedback element. The pass transistor is an amplifier which compares the output voltage and reference voltage to drive the pass transistor\'s base terminal, resulting in a gain which determines the regulator\'s output voltage.The pass transistor\'s base signal is a current which is wholly dependent on the output voltage. This causes the emitter voltage to adjust to maintain a constant voltage on the output pin. The output voltage is regulated when the collector current is sufficient to cause the base signal current to increase or decrease, as needed.The BA17809CP-E2 is also equipped with over-current protection circuitry. When the output current exceeds a safe level, the over-current protection circuit kicks in and limits the current draw. This allows the device to safely manage larger amounts of current.Conclusion BA17809CP-E2 linear voltage regulator is a reliable and stable device which is suitable for a wide range of applications. It is designed for use in power supply systems, peripheral systems, precision instrumentation, audio systems and more. It uses a PNP pass transistor as a feedback element and is equipped with over-current protection circuits which ensure safe operation.

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