L78L33ACUTR Integrated Circuits (ICs)

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The L78L33ACUTR is a 3-terminal fixed voltage regulator that features an output voltage ranging from 5V to 24V and an input voltage up to 35V. It is a linear voltage regulator that is designed to provide regulated power flows to electronic appliances and other circuits that require low to moderate levels of power. As a low dropout (LDO) regulator, it has an input-output differential of 1.2V or less and a current source that is capable of delivering up to 0.5A. This LDO regulator is pin-to-pin compatible with the L78L50ACUTR, making it suitable for use in applications that require high performance, low noise and minimum board space.

This voltage regulator is ideal for numerous power applications, including UPS systems, general purpose battery packs and battery backup circuits. The L78L33ACUTR also works well with battery backup systems that require lower operating voltages. Additionally, it is suitable for use as a standby current source in electronic toys, portable electronic devices, electronic meters and medical instruments. With its huge current capacity, it can also be used to supply power to sensitive audio equipment such as headphones.

Aside from the wide range of applications, the L78L33ACUTR also offers several special features. It has a wide operating temperature range of -40°C to 125°C, making it suitable for use in extreme temperature conditions. It also has a wide input voltage range of 6 - 35V and a dropout voltage at 0.3V for 500mA of current. Its low quiescent current and low output voltage noise make it suitable for use in low power noise-sensitive applications. It has a minimum load current threshold of 5mA and an input/output ground pin offset of 0.1V.

The L78L33ACUTR also offers a high degree of accuracy in voltage control, with a voltage tolerance of 1%. Moreover, its external resistor feature allows the output to be adjusted up to 230 mV. This helps in optimizing the system’s output voltage and current in accordance to the load requirements.

The L78L33ACUTR is a linear voltage regulator, meaning that it relies on transistors to maintain a constant voltage output. It follows the specifications of the linear voltage regulator “Design Guidelines for Regulated DC Power Supplies” which sets the design parameters for linear voltage regulators used in direct-current (DC) circuits. It works by using the Lemming equation, which states that the power gain or output power of a transistor is equal to the collector current multiplied by the collector-emitter voltage.

The power gain is determined by the voltage supplied to the transistor. As the voltage is increased, the transistor conducts more current, thus increasing the output power of the transistor. The advantage of a linear voltage regulator is that it is simple and inexpensive to produce, making it highly suitable for many consumer electronic devices. Furthermore, it allows for accurate voltage control, meaning that it can adjust the output voltage to account for variances in the input voltage.

The L78L33ACUTR voltage regulator is an excellent option for applications that require low power, low noise and accurate voltage regulation. It is available a wide range of packages and its wide operating temperature range makes it a reliable and durable choice for applications in extreme temperature conditions. Its external resistor feature also allows it to be easily adjusted for optimal power optimization and system performance.

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