L78L09ACZ-AP

Current - Output:	100mA
Base Part Number:	L78L09A
Supplier Device Package:	TO-92-3
Package / Case:	TO-226-3, TO-92-3 (TO-226AA) (Formed Leads)
Mounting Type:	Through Hole
Operating Temperature:	0°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	--
PSRR:	44dB (120Hz)
Current - Supply (Max):	6mA
Current - Quiescent (Iq):	5.5mA
Series:	--
Voltage Dropout (Max):	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	9V
Voltage - Input (Max):	30V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Box (TB)

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L78L09ACZ-AP Application Field and Working PrincipleLinear Voltage Regulators are electronic components that regulate voltage levels within circuits. They are used in many electronic devices and help to control voltages and currents to appropriate levels for other components. The L78L09ACZ-AP is a 3-terminal, low power 9V voltage regulator manufactured by Texas Instruments. This voltage regulator is ideal for low dropout (LDO) integrated circuit applications and is available in standard minimized package (SOT223). It can also provide a constant current source up to 100 mA which makes it ideal for this application.The working principle of L78L09ACZ-AP is simple and can be explained in a few steps. Firstly, an input voltage (Vin) enters the regulator and is compared to an internal voltage reference (Vref). This comparison will then enable the current limiting feature of the regulator, ensuring that the output is not exceeded. The regulator also has a current limiting circuit to prevent overloading the circuit. It also contains a voltage control circuit, which senses the output voltage and compares it to the Vref, if the voltage is too high, the voltage control circuit reduces the current flowing into the regulator, this in turn reduces the output voltage.The applications of L78L09ACZ-AP are vast and can be used in many applications such as voltage buffering and regulating, power management, linear control electronics and supply of low-dropout regulators. Because of its small size and low power requirements, it is suitable to be used in a variety of applications such as automotive systems and portable devices.Due to its excellent features, L78L09ACZ-AP is able to provide an excellent output voltage and current performance. This regulator has wide range temperature characteristics, with a low operating temperature of -40°C and a maximum operating temperature of 125°C. It also has good protection features and is able to protect against overvoltage, overtemperature and overcurrent conditions.In conclusion, the L78L09ACZ-AP is an ideal low power 9V voltage regulator for low-dropout applications and provides excellent performance in a wide variety of applications. The voltage regulator is reliable and has various protection features and a wide operating temperature range. The linear voltage regulator consists of 3 main components, namely input voltage comparison, current limiting and voltage control, which works together to provide an excellent output performance.

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