SLVSH72 December 2023 TPS281C100
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
The four working modes in the device are normal mode, normal mode with diagnostics, idle mode and idle mode with diagnostics.
Normal mode is when EN is high and DIAG_EN is low. In this mode, VS is having quiescent current of IQ,VS, and the main FET is ON. With DIAG_EN low, no current sense information is available through the SNS pin.
Normal mode with Diagnostics is when both EN and DIAG_EN is high. In this mode, VS is having quiescent current of IQ,VS_DIAG, and the main FET is ON. With DIAG_EN high, current sense information will be available through the SNS pin.
Idle mode is when both EN and DIAG_EN low. In this mode, main FET is OFF, and VS is consuming a current of IIDLE,VS. There is extra current consumed in this state compared to the traditional shutdown state, due to having EFT detection circuitry being active. Additionally, there is a current sink at the output always active to keep the output near 0V. The output sink can sink up to IOUT(OFF,SINK).
Idle mode with diagnostics is when EN is low and DIAG_EN is high. In this mode, main FET is OFF, and VS is consuming a current of IIDLE,VS_DIAG. With DIAG_EN high, the output pullup circuitry is active for open-load and short-to-VS detection, and there is no active output sink.