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LTM8046 input voltage range vs output voltage

Hello,

I want to convert 28V input to 5V,450mA isolated output by using LTM8046 . In datasheet, says LTM8046 maximum input is 31V .  However, DC1559A demo board specifies input range maximum 26V, also in datasheet circuits.

Is the input maximum voltage depends the output voltage?

Is 31V input only for the output below 3.3V?

Regards,

Mehmet.

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  • Hi Mehmet,

    Sorry for delay. For 5VOUT, please keep VIN up until 26V. Higher output voltages increase the voltage on the primary components.

    Yes, 31VIN is only for lower VOUT levels. Please follow recommendation in Table 1, page 10 of datasheet.

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  • Hi Mehmet,

    Sorry for delay. For 5VOUT, please keep VIN up until 26V. Higher output voltages increase the voltage on the primary components.

    Yes, 31VIN is only for lower VOUT levels. Please follow recommendation in Table 1, page 10 of datasheet.

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