STMicroelectronics provides a recommended PCB layout in the application note AN4553, which includes guidelines for component placement, routing, and thermal management to ensure optimal performance and minimize noise.
The choice of input and output capacitors depends on the specific requirements of your application, such as ripple current, voltage rating, and ESR. STMicroelectronics recommends using low-ESR capacitors with a voltage rating of at least 1.5 times the input voltage, and a capacitance value that meets the recommended ripple current specification.
While the datasheet specifies an operating temperature range of -40°C to 125°C, the maximum ambient temperature for reliable operation depends on the specific application and the thermal management of the system. As a general rule, it's recommended to keep the ambient temperature below 85°C to ensure reliable operation and minimize the risk of thermal shutdown.
To ensure EMC in your design, follow the guidelines in the application note AN4553, which includes recommendations for PCB layout, component selection, and shielding. Additionally, consider using a metal shield or a shielded inductor to reduce electromagnetic radiation.
While the datasheet specifies an input voltage range of 7V to 36V, the recommended input voltage range for optimal performance is 9V to 24V. Operating outside this range may affect the regulator's performance, efficiency, and stability.
L79L12ACZ datasheet
by STMicroelectronics
