Dialog Semiconductor customer support - DA14586 extended sleep current consumption https://support.dialog-semiconductor.com/resource-keywords/da14586-extended-sleep-current-consumption en Current consumption issue in extended sleep mode https://support.dialog-semiconductor.com/forums/post/dialog-smartbond-bluetooth-low-energy-%E2%80%93-hardware-device-reference-designs/current-0
Forums: 
Dialog Smartbond Bluetooth Low Energy – Hardware (device & reference designs)

Hi!

We developed custom board with DA14586 and current consumption in extended sleep mode is crucial for us. According to datasheet "Current consumption - Typical buck-application in
extended-sleep mode with 64 kB RAM retained, running from XTAL32K oscillator - 2.25 μA". But real current consumption is different from board to board - 2.5uA to 4.5uA(supply voltage is 3V, temperature is about 25°C). I found that supply current also depends on temperature. In colder conditions, current consumption is lower and close to 2.25 μA. In hotter conditions, it can be higher than 8uA.

Current consumption results are the same if I use custom firmware and barebone example project from SDK.

There is no another ICs on board. Information printed on top of the chip is DA14586 00000 1719ZCAA.

What can be a reason for this increased current consumption?

Keywords: 
DA14586 extended sleep current consumption
Device: 
DA14586
 Tue, 06 Mar 2018 14:04:41 +0000 ilnur_muham 157365 at https://support.dialog-semiconductor.com https://support.dialog-semiconductor.com/forums/post/dialog-smartbond-bluetooth-low-energy-%E2%80%93-hardware-device-reference-designs/current-0#comments