L78L05ABZ-TR Integrated Circuits (ICs)

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The L78L05ABZ-TR is a three-terminal low-voltage linear regulator designed to provide a fixed output of 5V. It is part of a wide range of fixed and adjustable voltage regulators offered by STMicroelectronics and is most commonly used in applications such as mobile phones, digital audio players, and automotive applications.

The L78L05ABZ-TR is a PMIC (power management integrated circuit) voltage regulator that is classified under the linear voltage regulator category. It is a positive linear regulator, meaning it takes a positive input voltage and regulates it to a lower positive output voltage. This allows for low noise operations and increased efficiency.

The L78L05ABZ-TR is an on-chip 3-terminal voltage regulator which can provide a fixed 5V output, regardless of the input voltage over a wide range from 9V to 25V. To achieve this, the regulator has integrated fold-back protection circuitry, over-temperature protection, and over-current protection. The fold-back protection allows the regulation to reduce its output voltage when the current is too high, thereby protecting the device from damage caused by excessive current. The over-temperature protection prevents the regulator from running at an excessively high temperature by reducing the output voltage when the junction temperature exceeds the maximum tolerated. The over-current protection also reduces the output voltage in the event of too much current being drawn from the regulator

The L78L05ABZ-TR also has a low quiescent current consuming, typically 2.2mA. This low quiescent current, combined with its high power output, makes the regulator an ideal choice for battery-powered applications. The regulator has a low dropout voltage of typically 300mV, which reduces power loss, allowing the regulator to be used in a wide range of applications. Additionally, the device has an active-high enable pin which allows the output to be enabled or disabled manually.

The L78L05ABZ-TR is a great choice for applications needing a fixed 5V regulator such as mobile phones, digital audio players, automotive applications, and more. It is a simple and efficient solution for voltage regulation with its low quiescent current, wide input voltage range, and excellent protection features.

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