DA9021 datasheet(45/142 Pages) DIALOG

45 / 142 page

DA9021/22

System PMIC with high efficiency USB power manager

Datasheet

Revision 2.5

17-Feb-2017

CFR0011-120-00 Rev 5

45 of 142

10.3 ADC performance

Figure 18: ADC DNL performance

Figure 19: ADC INL performance

10.4 Power path performance

Figure 20 Power path behaviour USB100

mode

Figure 21 Power path behaviour USB500

mode

Figures 20 and 21 show increasing load current supplied from VBUS, power path loop reduces ICH

until active diode turns on which then allows current from battery to supply system load current via

VDDOUT.

Figure 22: Transitioning supply from USB 5 V (via VBUS) to VBAT

Top trace = VDDOUT, bottom trace = VBUS

USB 100 Mode, VBUS=5V, VBAT=3.8V, ICH=100mA

-0.100

-0.080

-0.060

-0.040

-0.020

0.000

0.020

0.040

0.060

0.080

0.100

0.120

0.000

0.020

0.040

0.060

0.080

0.100

0.120

0.140

0.160

0.180

0.200

Iout (A)

3.500

3.550

3.600

3.650

3.700

3.750

3.800

3.850

3.900

3.950

4.000

4.050

I_bat (A)

I_usb (A)

VDD_out

Active Diode

Ibus Limit

VDD_out

USB 500 Mode, VBUS=5V, VBAT=3.8V, ICH=300mA

-0.300

-0.200

-0.100

0.000

0.100

0.200

0.300

0.400

0.500

0.600

0.000

0.100

0.200

0.300

0.400

0.500

0.600

0.700

0.800

Iout (A)

3.200

3.300

3.400

3.500

3.600

3.700

3.800

3.900

4.000

4.100

I_bat (A)

I_usb (A)

VDD_out

Active Diode

Ibus Limit

VDD_OUT

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