LT1938IDD#PBF

The LT1938IDD#PBF is a DC/DC buck switching regulator designed to replace linear regulators in applications that require higher efficiency or where space is limited. It is an integrated monolithic switching regulator with all of the necessary components integrated into one package. It features a wide input voltage range, high current output capability, and a programmable switching frequency.

The switching regulator works by operating in discontinuous-mode, meaning it regulates the output voltage by continuously turning the output switch on and off. During the off time, or discontinuous period, the inductor current reduces to zero as energy is transferred across the output capacitor. The duty cycle of the switch regulates the output voltage. The LT1938IDD#PBF has an adjustable switching frequency, allowing it to be easily configured for different applications.

The LT1938IDD#PBF provides an easy to use, efficient, and reliable way to regulate an output voltage in a wide variety of applications. It has a wide input voltage range from 4.5V to 28V, making it suitable for automotive and industrial applications. The high current capability of the device makes it an ideal choice for applications that require high current output such as power supplies, DC/DC converters, and motor drives.

The device also features comprehensive protection features such as undervoltage lockout (UVLO) and thermal shutdown. The UVLO prevents the device from operating until the VIN voltage is greater than the trip point set by the UVLO pin. The thermal shutdown prevents the device from operating if the junction temperature reaches a pre-determined temperature. In addition, the LT1938IDD#PBF has a programmable current limit that prevents excessive output currents.

In summary, the LT1938IDD#PBF is a DC/DC buck switching regulator that provides an efficient and reliable way to regulate an output voltage over a wide input voltage range. It features comprehensive protection features such as undervoltage lockout and thermal shutdown, as well as adjustable switching frequency for easier configuration. The LT1938IDD#PBF is suitable for a wide variety of applications, including power supplies, DC/DC converters, and motor drives.