WEBENCH® Tools/LM1117: LM1117-ADJ Voltage out Error

brett kelly

Part Number: LM1117

Tool/software: WEBENCH® Design Tools

Webench Power designer puts the Voltage resistors the wrong way

Below is what Webench created for a 1.8V supply and DOES NOT produce 1.8V

But The Data Sheet has 442R as Rfbb and 1K for Rfbt to get 1.8V

0 brett kelly over 3 years ago

0 Umayal Ramanathan over 3 years ago in reply to brett kelly

Hi Brett,

Thanks for contacting us. We are able to replicate the reported issue.

We shall correct feedback resistor selection in device LM1117 as per datasheet.

Regards,

Umayal

0 Umayal Ramanathan over 3 years ago in reply to Umayal Ramanathan

Hi Brett,

We are working to fix the issue in feedback resistor selection in device LM1117.

We shall keep you updated on the same.

Thanks and Regards,

Umayal

0 Umayal Ramanathan over 3 years ago in reply to Umayal Ramanathan

Hi Brett,

We have fixed this issue.Fix will be tentatively available on ti.com by mid of September.

For an immediate reference kindly refer the design report for condition reported below.

Thanks and Regards,

Umayal

0 Umayal Ramanathan over 3 years ago in reply to Umayal Ramanathan

Hi Brett,

The fix is now available on ti.com.We are observing an issue with panel for device LM1117 on ti.com.

We are working to fix this issue.We shall keep you updated on the same.

Thanks and Regards,

Umayal

0 Umayal Ramanathan over 3 years ago in reply to Umayal Ramanathan

Hi Brett,

The issue in panel for device LM1117 on ti.com is now resolved.

Thanks and Regards,

Umayal

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