DA9021 datasheet(3/142 Pages) DIALOG

3 / 142 page

DA9021/22

System PMIC with high efficiency USB power manager

Datasheet

Revision 2.5

17-Feb-2017

CFR0011-120-00 Rev 5

3 of 142

9.1

32 kHz oscillator .................................................................................................................. 41

9.2

RTC counter and alarm....................................................................................................... 41

10 Typical characteristics................................................................................................................ 43

10.1 Buck regulator performance................................................................................................ 43

10.2 Linear regulator performance.............................................................................................. 44

10.3 ADC performance ............................................................................................................... 45

10.4 Power path performance..................................................................................................... 45

11 Functional description ................................................................................................................ 46

11.1 Power manager IO ports ..................................................................................................... 46

11.2 On/off (nONKEY) ................................................................................................................ 46

11.3 Hardware reset (nSHUTDOWN, nONKEY, GPIO14 & GPIO15) ....................................... 46

11.4 Reset output (nRESET) ...................................................................................................... 47

11.5 System enable (SYS_EN)................................................................................................... 47

11.6 Power enable (PWR_EN) ................................................................................................... 47

11.7 Power1 enable (PWR1_EN) ............................................................................................... 47

11.8 General purpose feedback signal 1 (GP_FB1: EXT_WAKEUP/READY)........................... 47

11.9 Power domain status (PWR_UP/GP_FB2)......................................................................... 48

11.10 Supply rail fault (nVDD_FAULT) ......................................................................................... 48

11.11 Interrupt request (nIRQ) ...................................................................................................... 48

11.12 Real time clock output (OUT_32K) ..................................................................................... 48

11.13 IO_supply voltage (VDD_IO) .............................................................................................. 48

12 Control interfaces........................................................................................................................ 49

12.1 Power manager interface (4-wire and 2-wire control bus) .................................................. 49

12.2 4-wire communication ......................................................................................................... 49

12.3 2-wire communication ......................................................................................................... 53

12.3.1

2-wire control bus protocol................................................................................... 53

12.3.2

Alternative high speed 2-wire interface ............................................................... 55

13 DA9021 operating modes ........................................................................................................... 56

13.1 ACTIVE mode ..................................................................................................................... 56

13.2 POWERDOWN mode ......................................................................................................... 56

13.3 RESET mode ...................................................................................................................... 56

13.4 NO-POWER mode .............................................................................................................. 57

13.5 POWER COMMANDER mode ........................................................................................... 57

13.6 Start up from NO POWER mode ........................................................................................ 58

13.6.1

Power-On-Reset (nPOR)..................................................................................... 58

13.6.2

Application wakeup .............................................................................................. 59

13.6.3

Power supply sequencer ..................................................................................... 60

14 Register page control ................................................................................................................. 65

14.1 Register page 0 ................................................................................................................... 65

14.1.1

Power manager control and monitoring............................................................... 65

15 GPIO Extender ............................................................................................................................. 75

15.1 GPIO control ....................................................................................................................... 76

16 Power supply sequencer ............................................................................................................ 81

16.1 Power sequencer ................................................................................................................ 83

17 Voltage regulators ....................................................................................................................... 86

17.1 DA9021/22 core regulator LDOCORE ................................................................................ 87

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