STMicroelectronics L5973AD Manuals

The L5973AD is a step down monolithic power switching regulator with a switch current limit of 2 A, so it is able to deliver more than 1.5 A DC current to the load depending on the application conditions. The output voltage can be set from 1.235 V to 35 V. The high current level is also achieved thanks to an SO8 package with exposed frame, that allows to reduce the RthJA down to approximately 40 °C/W. The device uses an internal P-Channel D-MOS transistor (with a typical of 200 mΩ) as switching element to avoid the use of bootstrap capacitor and guarantee high efficiency. An internal oscillator fixes the switching frequency at 500 kHz to minimize the size of external components. Having a minimum input voltage of 4 V

The L5973AD is a step down monolithic power switching regulator produced by ST. The maximum operating voltage is 36V and the maximum output current is 2A. The output voltage can be adjusted in the range of 1.235V-35V. The chip uses an internal P-channel DMOS transistor as the switching element, an internal oscillator fixes the working frequency at 500KHz, and has high efficiency, low power consumption, and good EMI performance. It is suitable for 5V power bus and can be widely used in consumer electronics, network equipment, computers, and industrial fields.