Allicdata Part #: | KA7818E-ND |
Manufacturer Part#: |
KA7818E |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | ON Semiconductor |
Short Description: | IC REG LINEAR 18V 1A TO220-3 |
More Detail: | Linear Voltage Regulator IC Positive Fixed 1 Outpu... |
DataSheet: | KA7818E Datasheet/PDF |
Quantity: | 1000 |
1 +: | 0.00000 |
Current - Output: | 1A |
Base Part Number: | KA7818 |
Supplier Device Package: | TO-220-3 |
Package / Case: | TO-220-3 |
Mounting Type: | Through Hole |
Operating Temperature: | -40°C ~ 125°C |
Protection Features: | Over Temperature, Short Circuit |
Control Features: | -- |
PSRR: | 69dB (120Hz) |
Current - Quiescent (Iq): | 8mA |
Series: | -- |
Voltage Dropout (Max): | 2V @ 1A (Typ) |
Voltage - Output (Max): | -- |
Voltage - Output (Min/Fixed): | 18V |
Voltage - Input (Max): | 35V |
Number of Regulators: | 1 |
Output Type: | Fixed |
Output Configuration: | Positive |
Part Status: | Obsolete |
Packaging: | Bulk |
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KA7818E is a three-terminal voltage regulator designed by Motorola. This device would be best categorized as a linear voltage regulator in the power management integrated circuit (PMIC) family. It is a positive voltage regulator with a maximum output current of 1.5A (KA7818), and a guaranteed output voltage range of 1.2-37V for the KA7818E. This device is well suited for power supplies and battery-operated systems with low current requirements.
Features of KA7818E
The KA7818E features a internal thermal overload protection that guards against short-circuit and thermal overload conditions. It also offers protection against reverse battery, over-voltage and reverse-voltage conditions. In addition, the device provides a low temperature drift of 10 mV/°C at the 1.2V reference. It also has a low quiescent current to minimize power loss, as well as a wide input range of 1.2-37V.
Applications of KA7818E
The KA7818E is ideally suited for use in many industrial, automotive and consumer applications. It can be used to regulate the power supply to many logic and microprocessor based controllers, as well as transceiver and power amplifiers. It is also used for providing bias and regulated power to analog and digital circuits, and for driving LEDs in automotive applications. Other applications include powering ultrasounds, and PLL applications in radio products.
Working Principle of KA7818E
The KA7818E is an excellent, low-cost linear voltage regulator. It is based on the classic Zener diode voltage regulation principle. The KA7818E works by taking the input voltage and comparing it to the reference voltage. The difference between the input voltage and the reference voltage is then amplified and used to control the bias current of the output regulator. The control voltage is then compared to the regulator\'s reference voltage, and adjusts the output voltage to maintain a constant output voltage when the input voltage changes.
The internal circuitry of the KA7818E regulates the output voltage by sensing the voltage difference between the input voltage and the reference voltage. This is done by the use of a differential amplifier, which amplifies the small voltage differences between the input and reference. The differential amplifier then produces a control voltage that is used to control the bias current of the output voltage regulator, making sure that the regulator keeps the output voltage at its setpoints.
The KA7818E also features internal protection against short-circuit, over temperature, and thermal overload conditions, as well as protection against reverse battery, over-voltage and reverse-voltage conditions. With its integrated features, the KA7818E becomes an ideal choice for many power supply and microprocessor-based systems with low current requirements.
The specific data is subject to PDF, and the above content is for reference
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