Hi Stefan, for the i.MX23 the regulator daisy chain looks a little bit different: +------------+ VDD5V +---------+ VDDIO | DC-DC | +--------> LINREG +--------->+ | | | VDDIO | | | | +---------+ | | DCDC_VDDIO +->-+-----------------------------+ | | | | | | VDDIO +---------+ VDDMEM | | +--------> LINREG +---------> | | | | VDDMEM | | | | +---------+ | | | VDDIO +---------+ VDDA | | +--------> LINREG +--------->+ | | | VDDA | | | | +---------+ | | DCDC_VDDA +->-+-----------------------------+ | | | VDDA +---------+ VDDD | | +--------> LINREG +--------->+ | | | VDDD | | | | +---------+ | | DCDC_VDDD +->-------------------------------+ +------------+ | v Regards, Juergen ÿôèº{.nÇ+?·?®??+%?Ëÿ±éݶ¥?wÿº{.nÇ+?·?zø?zÚÞ{ø§¶?¡Ü¨}©?²Æ zÚ&j:+v?¨þø¯ù®w¥þ?à2?Þ?¨èÚ&¢)ß¡«a¶Úÿÿûàz¿äz¹Þ?ú+?ù???Ý¢jÿ?wèþf