L7981TR Integrated Circuits (ICs)

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The L7981TR is a highly efficient DC-DC switching regulator, developed to provide a high performance, cost-effective solution in a wide range of applications, from general purpose voltage regulation to fixed output voltage sources for consumer and industrial use. It is a step-down regulator with an adjustable output voltage, from 2.74V to 5.5V, with an operating quiescent current of 20mA and a maximum output current of up to 2A.

The L7981TR switches at a fixed frequency of 300kHz but is sensitive to the load, allowing a greater efficiency and power at light loads and preventing runaway at heavy loads. It is available in both through-hole and surface mount packages and is compatible with standard surface mount and through-hole components.

The L7981TR employs an internal step-down converter, operating at a fixed frequency of 300kHz and operates at a switching frequency of up to 1MHz. As a result, the regulator is able to maintain a tight, fixed output voltage despite the low quiescent current and wide input voltage range of 8V to 45V. In addition, the L7981TR regulator is protected against overvoltage and overcurrent.

The L7981TR’s low quiescent current allows it to be used in applications where energy saving is essential. Its adjustable output voltage allows it to be used in both consumer and industrial applications, providing a cost-effective, adjustable solution for both.

The L7981TR’s switching frequency is also adjustable, allowing for flexible control of the output voltage and current. The regulator also features a soft-start circuit to minimize inrush current at startup, making it well suited for high-current applications.

The L7981TR also features an internal temperature sensor and thermal protection to prevent damage due to overheating. The device also features short-circuit protection, reverse-polarity protection, and undervoltage protection, making it ideal for a wide range of applications.

In summary, the L7981TR is an ideal solution for a wide range of applications. Its adjustable output voltage and low quiescent current make it suitable for both consumer and industrial applications, while its adjustable switching frequency, thermal protection, and a wide range of protection features make it ideal for applications where reliability and safety are paramount.

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