Allicdata Part #: | KA78L18AZBU-ND |
Manufacturer Part#: |
KA78L18AZBU |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | ON Semiconductor |
Short Description: | IC REG LINEAR 18V 100MA TO92-3 |
More Detail: | Linear Voltage Regulator IC Positive Fixed 1 Outpu... |
DataSheet: | KA78L18AZBU Datasheet/PDF |
Quantity: | 1000 |
1 +: | 0.00000 |
Specifications
Series: | -- |
Packaging: | Bulk |
Part Status: | Obsolete |
Output Configuration: | Positive |
Output Type: | Fixed |
Number of Regulators: | 1 |
Voltage - Input (Max): | 35V |
Voltage - Output (Min/Fixed): | 18V |
Voltage - Output (Max): | -- |
Voltage Dropout (Max): | -- |
Current - Output: | 100mA |
Current - Quiescent (Iq): | 6mA |
PSRR: | 48dB (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: | KA78L18 |
Description
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Introduction
The KA78L18AZBU Buck Regulator is a single-channel, high-efficiency voltage regulator that is used to reduce the output voltage from a power source. It is widely used in applications that require precise voltage regulation, such as computer and mobile devices, automotive and industrial equipment, and so on. The device features a low voltage dropout, high output accuracy, short starting time, and low noise operation.Application Field
The KA78L18AZBU Buck Regulator is a cost-effective voltage regulator for many applications such as embedded systems, printers, digital cameras, portable devices and game consoles, data communications and navigation systems, industrial equipment, and automotive electronic products.For example, in embedded systems, the KA78L18AZBU can be used in applications requiring precise voltage regulation, such as motor control circuitry or microcontroller-based power management. In digital cameras, portable devices, and game consoles, the use of the KA78L18AZBU can provide reliable power supply for memory, CPU, I/O, and display circuits.The KA78L18AZBU is also used in industrial equipment and automotive electronics products. In equipment used in hazardous environments, the KA78L18AZBU can provide reliable power supply for safety-related systems and other high-precision components such as temperature and pressure sensors. In addition, the KA78L18AZBU can be used in vehicle immobilizers, alarm systems, and parking sensors.Working Principle
The KA78L18AZBU Buck Regulator operates using a switching circuit that converts a high input voltage to a lower output voltage. It is designed to regulate the output voltage by using a series of relatively simple steps.First, the input voltage is routed through a current-sense resistor and a switching transistor. When the transistor is turned on, a current is allowed to flow through the current-sense resistor, and this current is used to determine the value of the output voltage. The output voltage is regulated by adjusting the duty cycle of the switch. For example, if the output voltage needs to be higher, the duty cycle of the switch is increased, which causes the cycle time of the switch to decrease, and this will cause the output voltage to increase.Then, the output voltage is routed through a voltage feedback loop, which compares the actual output voltage to the voltage setpoint, and adjusts the duty cycle of the switch accordingly in order to maintain the desired output voltage. The output voltage will remain stable until the input voltage changes, in which case the duty cycle of the switch will be adjusted in order to maintain the desired output voltage.Finally, the regulated output voltage is routed through a filter capacitor in order to reduce any unwanted noise or ripple on the output. The filter capacitor also provides energy storage to ensure that the output voltage remains stable even if the input voltage drops.Conclusion
In conclusion, the KA78L18AZBU Buck Regulator is a cost-effective voltage regulator used in a wide variety of applications, such as embedded systems, digital cameras, portable devices, industrial equipment, automotive electronics products, and so on. It features a low voltage dropout, high output accuracy, short start-up time, and low noise operation, making it suitable for many applications that require precise voltage regulation. The KA78L18AZBU operates using a switching circuit that converts a high input voltage to a lower output voltage and is regulated by adjusting the duty cycle of the switch. In addition, a filter capacitor is used to reduce any unwanted noise or ripple on the output.The specific data is subject to PDF, and the above content is for reference
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