LM78L09ACZ

Series:	--
Packaging:	Bulk
Part Status:	Obsolete
Output Configuration:	Positive
Output Type:	Fixed
Number of Regulators:	1
Voltage - Input (Max):	35V
Voltage - Output (Min/Fixed):	9V
Voltage - Output (Max):	--
Voltage Dropout (Max):	--
Current - Output:	100mA
Current - Quiescent (Iq):	2mA
PSRR:	44dB (120Hz)
Control Features:	--
Protection Features:	Over Temperature, Short Circuit
Operating Temperature:	0°C ~ 125°C
Mounting Type:	Through Hole
Package / Case:	TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package:	TO-92-3
Base Part Number:	LM78L09

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LM78L09ACZ Application Field and Working Principle

The LM78L09ACZ is a three-terminal monolithic integrated circuit, commonly known as a voltage regulator, which is used in the supply voltage regulation for positive voltage power supplies. It has a maximum input voltage of 35V and a maximum output current of 100mA, making it ideal for a variety of simple, cost-effective voltage supply applications.The LM78L09ACZ is part of the LM78L series of linear voltage regulators, developed by National Semiconductor Corporation (NSC). It is a low-dropout (LDO) voltage regulator, which means that the output voltage will remain close to the input voltage when the load is increased. This makes the LM78L09ACZ a reliable, low-cost solution for applications which require gentle and steady voltage supply levels.The LM78L09ACZ is a surface-mounted device (SMD). It has three pins, an input pin and an output pin, and a ground pin. The input pin is used to connect the load and the power source voltage. The output pin is connected to the load, and the ground pin is connected to the ground. To maintain stability and protect the device from damage, it is recommended that a 100uF output capacitor, and a 0.1uF input capacitor should be used.The LM78L09ACZ is a linear voltage regulator, which means it maintains the output voltage regardless of the applied load, within the specified output voltage range. Its function is to provide a constant, low output voltage, regardless of the input voltage. It achieves this voltage regulation by using a series of resistors and a feedback regulator, operating in an open loop configuration.The LM78L09ACZ offers many useful features, such as over-voltage and short-circuit protection, over-temperature protection, and current limiting/shutdown. The over-voltage protection ensures that the regulator will shutdown when the output is greater than the specified maximum or when the output voltage is significantly different from the expected voltage. The over-temperature protection will limit the amount of current that is passed to the output, and the current-limiting/shutdown function will ensure that the regulator will not draw more current than necessary.The LM78L09ACZ is commonly used in applications such as audio amplifiers, industrial system power supplies, automotive, cameras, computers, and medical equipment. It is a versatile and reliable voltage regulator, offering high reliability and performance, and an economical solution for voltage regulation applications.

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