MC78LC40HT1G

Linear voltage regulators are critical components for numerous applications in various industries. They enable system designers to ensure a smooth and stable power supply for the entire circuit and ensure continuous system operations. MC78LC40HT1G is a linear voltage regulator optimally designed for a wide range of general purpose power applications. It provides reliable performance and efficient power conversion featuring low input voltage ranges, low output voltage range and excellent line and load regulation.

The MC78LC40HT1G Active Low-Dropout Regulator (LDO) is a two-terminal voltage regulator with an active output stage. This LDO operates with a wide input voltage range of 4.75V to 20V, and a tight output voltage range of 0.8V to 20V. This regulator offers low quiescent current of just 110uA and tight line and load regulation of 0.5%. With its wide input/output voltage range, the MC78LC40HT1G is well suited for a broad range of applications, including battery-powered systems, automotive systems, communications equipment and HVAC systems.

To ensure superb accuracy and reliability, the MC78LC40HT1G uses an active feedback comparator that compares the voltage regulating signal from the error amplifier to the voltage reference in order to accurately set the output voltage. This feedback comparator also monitors the output voltage during startup and operation to maintain stability.

The MC78LC40HT1G is able to handle high load currents up to 1A with excellent load regulation, as well as thermal shutdown and reverse connection protection. It also has an ultimate current limit of 1.8A, enabling reliable power delivery and performance under extreme loading conditions. Moreover, the MC78LC40HT1G boasts high power supply rejection rate (PSRR) of 65dB at 1KHz and 80dB at 10KHz, allowing it to operate effectively with noisy power supplies.

The MC78LC40HT1G is available in a TO-220 package with thermal pad for heat dissipation and an optional input capacitor for power supply noise suppression. The device is also optimally designed for no-heat sink operation.

The MC78LC40HT1G is an excellent choice for providing high efficiency, precision and performance in a wide range of applications. Its wide input/output voltage range, low quiescent current and excellent line and load regulation make it ideal for general purpose linear voltage regulation, as well as battery powered systems, automotive systems, communications equipment, HVAC systems and other medium- to heavy-load applications.