MC78L12ABP

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PMIC stands for power management integrated circuit. Linear voltage regulators are circuits used to maintain a constant voltage output by limiting the current. They can dissipate excess power through an external P-type transistors or by using an internal thermal slow-down mechanism. The MC78L12ABP is an example of such a voltage regulator.

The MC78L12ABP is a positive-voltage linear regulator designed for 3V to 15V operation. It is offered in both DIP and TO-3 packages and offers overcurrent protection with improved tolerance to load variation. The device is available in three versions targetsd for different applications.

The first version is the MC78L12ABP. It is designed for use in applications such as portable electronic devices and precision components. The second version is the MC78L12ABP-R, designed for use in automotive and industrial applications. The third version is the MC78L12ABP-LP, a low power version designed for use in battery-powered applications.

The MC78L12ABP features a two-pin adjustable output voltage, making it ideal for applications that require an adjustable voltage supply. It also features a quiescent current of 10µA, and a ripple rejection of 78dB. The device offers a power dissipation of 1.5W and a thermal protection circuit that shuts down the device when the operating temperature exceeds a specified limit.

The working principle of the MC78L12ABP is simple. When a positive voltage is applied at the input, the device’s internal Zener diode clamp allows excess voltage to be dissipated as heat. The device then uses the excess voltage to create a reference voltage that the output voltage is regulated against.

The MC78L12ABP is a versatile device and can be used in a variety of applications. It can be used to provide a constant voltage source for electronic circuits, to regulate power supply voltages for computers and other devices, and to power motor controllers, among other applications.

In summary, the MC78L12ABP is a versatile linear voltage regulator designed for 3V to 15V operation. It offers a quiescent current of 10µA, a ripple rejection of 78dB, and a power dissipation of 1.5W. The device features adjustable output voltage, thermal protection, and can be used in a variety of applications, making it ideal for many different applications.

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