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What are the suspend current ratings for PDIUSBD12?

April 26, 2017pdiusbd12 ratings suspend

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What are the suspend current ratings for PDIUSBD12?

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The USB Specification requires bus-powered devices to draw less than 500 A during suspend mode. To meet this stringent requirement, the PDIUSBD12 shuts off non-essential internal blocks when in suspend mode. This significantly reduces the current ratings to a maximum of only 15 A. This allows more margin for the rest of the hardware to meet the 500 A requirement in a typical bus-powered system. In addition, PDIUSBD12 (D12) supports remote wakeup. A peripheral using D12 can initiate a system wakeup as well. Note: The 15 A does not include the mandatory pull-up resistor on the D+ line which adds 200 A on all USB devices. Hence, in total, using the PDIUSBD12 as a USB front-end would consume a maximum of 215 A on suspend. The actual measured value is 202 A. See also Question 1.2.