Texas Instruments High-Performance Analog Voltage Regulators - DC DC Switching Regulators LM2674LD-ADJ

The LM2674LD-ADJ is a step-down (buck) switching regulator capable of delivering up to 500 mA of output current. It operates within a wide input voltage range of 8V to 40V and features an adjustable output voltage range from 1.21V to 37V. The regulator achieves high efficiency, exceeding 90%, which minimizes heat generation, allowing for simpler thermal management using only copper traces on the PCB. This device includes integrated features such as thermal shutdown and current limiting for protection under fault conditions. It operates at a fixed switching frequency of 260 kHz, enabling the use of smaller filter components compared to lower frequency regulators. The LM2674LD-ADJ requires only five external components for operation, simplifying the design process. Additionally, it offers a guaranteed output voltage tolerance of ±1.5% under specified conditions and includes TTL shutdown capability for low power standby mode. The LM2674LD-ADJ is suitable for applications requiring efficient voltage regulation, including as a pre-regulator for linear regulators and in various power supply designs.