DA9155M datasheet(23/36 Pages) DIALOG

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DA9155M

2.5 A Companion Charger for rapid charging

Figure 19: Junction temperature monitoring of DA9155M

10.8 Power modes

The power modes of DA9155M are illustrated in Figure 20.

Disabled

Reset

Active functions:

• VIN-VBAT comparator

• Bandgap

• VIN comparator

• VBAT comparator

• TJUNC comparator

• VDDCORE LDO

• Internal oscillator

• OTP controller

• All outputs inactive

OTP read done &&

VIN > VIN_UVLO &&

TJUNC < TJUNC_CRIT

Active

EN == 0 ||

VBAT <= VBAT_UV ||

VBAT >= VBAT_OV ||

VIN <= VIN_DROP ||

VIN <= VIN_UVLO ||

VIN >= VIN_OVLO ||

E_CHG_TIMEOUT ||

TJUNC >= TJUNC_CRIT

EN == 1 &&

VBAT > VBAT_UV &&

VBAT < VBAT_OV &&

VIN > VIN_DROP &&

VIN > VIN_UVLO &&

VIN < VIN_OVLO &&

TJUNC < TJUNC_CRIT &&

IOVDD_OK == 1

TJUNC > TJUNC_POR

Any state

VIN < VIN2BAT

No-Power (5 µA)

Active functions:

• VIN-VBAT comparator

• All outputs inactive

VIN > VIN2BAT

Any state

Active functions:

• VIN-VBAT comparator

• Bandgap

• VIN comparator

• VBAT comparator

• TJUNC comparator

• VDDCORE LDO

• Internal oscillator

• I2C

Active functions:

• VIN-VBAT comparator

• Bandgap

• VIN comparator

• VBAT comparator

• TJUNC comparator

• VDDCORE LDO

• Internal oscillator

• I2C

• Buck

Figure 20: Power modes of DA9155M. The conditions for state transitions follow the C-

language syntax.

10.8.1

No-power

The no-power mode is the initial state of DA9155M. Only the VIN-VBAT comparator is active in this

state. When VIN rises above VBAT, DA9155M enters the reset mode. All IOs are in their inactive state.

The no-power mode is entered whenever VIN drops below VBAT.

10.8.2

Reset

DA9155M enters the reset mode when a power supply is attached and VIN rises above VBAT. In the

reset mode, DA9155M will enable the internal reference, the internal supply, execute the reset

sequence, and read the OTP. Once the OTP is read and all the VIN conditions are met, DA9155M

moves automatically to the disabled mode.

TEMP_CRIT

TEMP_WARN

VBE

TEST[1:0]

VCORE

VTWARN

VTCRIT

VTTEST1

VTTEST2

BGAP

DIODE VOLTAGE

TWARN_EN

TCRIT_EN

TEMP_POR

VCORE

TPOR_EN

VTPOR

VTTEST3

Datasheet

v3.05

22-July-2016

CFR0011-120-00 Rev 5

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