SNVS118F december 1999 – may 2023 LM2594 , LM2594HV
PRODUCTION DATA
From Table 9-7, locate the output voltage column. From that column, locate the output voltage closest to the output voltage in your application. In this example, select the 24-V line. Under Section 9.1.2, select a capacitor from the list of through hole electrolytic or surface mount tantalum types from four different capacitor manufacturers. TI recommends that both the manufacturers and the manufacturers series that are listed in Table 9-7.
In this example, through hole aluminum electrolytic capacitors from several different manufacturers are available.
82-μF, 50-V Panasonic HFQ Series
120-μF, 50-V Nichicon PL Series
For a 20-V output, a capacitor rating of at least 30-V or more is required. In this example, either a 35-V or 50-V capacitor can work. A 50-V rating was chosen because it has a lower ESR which provides a lower output ripple voltage.
Other manufacturers or other types of capacitors can also be used, provided the capacitor specifications (especially the 100-kHz ESR) closely match the types listed in Table 9-7. Refer to the capacitor manufacturers data sheet for this information.