L4947

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The L4947 is a high-performance voltage regulator designed for linear applications. It provides a low current, low output voltage drop, and high efficiencies compared to similar regulators. The output voltage and current of the regulator can be easily adjusted by an external resistor and a pin.;

The L4947 is a linear voltage regulator that employs an internal series-shunt configuration and a current-sensing element to sense and regulate the output voltage. The current-sensing element acts as a voltage divider, dividing the external resistor and the input voltage. This configuration allows the regulator to respond quickly to changes in the supply voltage, providing a small output voltage drop, low quiescent current, and high efficiency.

The L4947 has a wide range of applications, such as powering LCD backlights, LEDs, general purpose voltage regulation, and more. Due to its low output voltage, low quiescent current, and low power supplies it is also ideal for use in battery-operated systems. It also features an overload protection, which helps protect against catastrophic events. In cases where an additional layer of protection is needed, the L4947 can be used with a dedicated over-voltage and over-current protection circuit.

The L4947 is designed to operate on a wide variety of input voltages ranging from 4.75V to 32V. The regulator\'s output voltage is adjustable by setting the external resistor and is capable of providing output voltages ranging from 5.25V to 36V. The output current of the regulator is rated up to 2A. The regulator has a maximum drop voltage of 0.36V and a maximum quiescent current of 8 mA. The power dissipation at the maximum output current is low, making it well suited for low power applications.

The L4947 offers a host of features, making it a great choice for linear voltage regulation applications. Its wide input voltage range and adjustable output voltage capabilities make it suitable for a wide range of applications. Its low quiescent current and low drop voltage provide high efficiency and low power consumption. Additionally, the overload protection offers critical protection for power supplies, making it a great choice for battery-operated systems. Overall, the L4947 is an excellent option for powering LCD backlights, LEDs, general purpose voltage regulation, and more.

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