L7981A

The L7981A is a DC to DC switching regulator designed to replace linear regulators in a wide range of application fields. Not only is this switch regulator able to deliver better performance in high power applications, but its efficiency results in improved overall reliability and greater system flexibility than linear designs.

The L7981A is a positive voltage converter with an input voltage range of up to 28V and is capable of outputting a controlled and regulated output voltage of up to 15V. It also delivers a maximum output current of 2A and is able to switch from its 0V state to its output voltage in under 20 microseconds. Depending on the input voltage, the L7981A will require an additional external output voltage regulator for applications where the output current level exceeds 1.3A.

The L7981A uses a buck-boost topology to maximize the efficiency of the switching regulator. It uses a high-frequency switching technique to reduce the need for large components on the board and to minimize transfer losses. The switch regulator features a built-in pulse width modulation (PWM) control circuit which allows for different operating frequencies that can be set by the external inductor used to create the required voltage. The typical operating frequency range is 300kHz to 1MHz, with a quiescent current of around 10nA.

The main advantage of the L7981A is that it can replace the need for multiple linear regulators and other power management ICs when used in high power applications. The switch regulator’s built-in short circuit protection and protection from reversed input voltage can also significantly reduce the risk of damaging other components in the system. The L7981A also provides a wide range of potential applications, as it can be used for power supply, battery charging, and solar power applications.

Overall, the L7981A is an efficient solution for applications that require higher performance than linear regulators can deliver. The DC to DC buck-boost switch regulator is ideal for meeting the needs of high power applications, from power supply systems, to battery charging and solar power. Thanks to its built-in features, the L7981A can also reduce the risk of damaging other components and provides system protection.