DA9021 datasheet(4/142 Pages) DIALOG

4 / 142 page

DA9021/22

System PMIC with high efficiency USB power manager

Datasheet

Revision 2.5

17-Feb-2017

CFR0011-120-00 Rev 5

4 of 142

18 DC/DC buck converters .............................................................................................................. 88

18.1 Converters BUCKCORE, BUCKPRO (DA9021 only) and BUCKMEM with DVC .............. 88

18.2 Converter BUCKPERI with OTP programmable output voltage and bypass mode

(DA9022 only) ..................................................................................................................... 90

18.3 Power supplies .................................................................................................................... 91

19 Programmable battery charger ................................................................................................ 103

19.1 High efficiency charger DC-DC buck converter ................................................................ 104

19.2 Charger supply detection/VBUS monitoring ..................................................................... 104

19.3 VBUS overvoltage protection and USB suspend.............................................................. 105

19.4 Battery pre-charge mode .................................................................................................. 106

19.5 Fast linear-charge mode ................................................................................................... 107

19.6 Thermal charge current control ......................................................................................... 107

19.7 Dynamic charging current control (DCCC) and active-diode............................................ 108

19.8 Programmable charge termination by time ....................................................................... 108

19.8.1

Battery charger .................................................................................................. 109

20 Monitoring ADC and touch screen interface .......................................................................... 114

20.1 ADC overview ................................................................................................................... 114

20.1.1

Input MUX .......................................................................................................... 114

20.1.2

ADC ................................................................................................................... 114

20.2 MANUAL CONVERSION mode ........................................................................................ 114

20.3 Automatic measurements scheduler................................................................................. 115

20.3.1

A0: VDDOUT low voltage nIRQ measurement mode ....................................... 115

20.3.2

A1: ICH (and ICH_BAT average) measurement mode ..................................... 115

20.3.3

A2: TBAT and battery temperature warning nIRQ measurement mode ........... 116

20.3.4

A4, A5: automatic measurement and high/low threshold warning nIRQ mode. 116

20.3.5

A8: automatic measurement of internal temperature ........................................ 116

20.3.6

A3, A9: manual measurement VBAT and VBBAT............................................. 116

20.4 Fixed threshold comparator .............................................................................................. 116

20.4.1

LED driver .......................................................................................................... 117

20.4.2

GP-ADC ............................................................................................................. 118

20.4.3

RTC calendar and alarm.................................................................................... 122

20.5 Register page 1 ................................................................................................................. 124

20.5.1

Customer OTP................................................................................................... 125

21 Register Map .............................................................................................................................. 127

22 Package information ................................................................................................................. 133

22.1 Package outlines ............................................................................................................... 133

23 External component selection ................................................................................................. 134

23.1 Capacitor selection............................................................................................................ 134

23.2 Inductor selection .............................................................................................................. 135

23.3 Resistors 135

23.4 External pass transistors and Schottky diodes ................................................................. 135

23.5 Battery pack temperature sensor (NTC) ........................................................................... 135

23.6 Crystal

136

24 Layout guidelines ...................................................................................................................... 137

24.1 General recommendations................................................................................................ 137

24.2 System supply and charger .............................................................................................. 137

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