Datasheet

Data Sheet ADP5062
Rev. B | Page 15 of 44
THEORY OF OPERATION
SUMMARY OF OPERATION MODES
Table 7. Summary of the ADP5062 Operation Modes
Mode Name
VINx
Condition Battery Condition
Trickle
Charge
LDO FET
State
Battery
Isolation FET
System Voltage
ISO_Sx Additional Conditions
1
IC Off, Standby 0 V Any battery condition Off Off On/Off
Battery voltage
or 0 V
Disable IC1
IC Off, Suspend 5 V Any battery condition Off Off On Battery voltage Disable IC1
LDO Mode Off, Isolation
FET On
5 V Any battery condition Off Off On Battery voltage
Disable LDO and enable
isolation FET
LDO Mode Off, Isolation
FET Off (System Off)
5 V Any battery condition Off Off Off 0 V Enable battery charging
LDO Mode, Charger Off 5 V Any battery condition Off LDO Off 5.0 V Enable battery charging
Trickle Charge Mode 5 V Battery < V
TRK_DEAD
On LDO Off 5.0 V Enable battery charging
Weak Charge Mode 5 V V
TRK_DEAD
≤ battery < V
WEAK
On CHG CHG 3.8 V Enable battery charging
Fast Charge Mode 5 V Battery ≥ V
WEAK
Off CHG CHG 3.8 V (minimum) Enable battery charging
Charge Mode, No Battery 5 V Open Off LDO Off 5.0 V Enable battery charging
Charge Mode, Battery
(ISO_Bx) Shorted
5 V Shorted On LDO Off 5.0 V Enable battery charging
1
See Table 8 for details.
Table 8. Operation Mode Controls
Pin Configuration DIG_IOx
Equivalent I
2
C
Address, Data Bit(s) Description
Enable Battery Charging DIG_IO3 0x07, D0 Low = all charging modes disabled (fast, weak, trickle).
High = all charging modes enabled (fast, weak, trickle).
Disable IC1 DIG_IO2 0x07, D6
Disable IC1
VINx
1
Supply
Connected LDO_FET ISO_FET
Low No Off On
Yes CHG CHG
High No
2
Off On
Yes Off On
Disable LDO and Enable Isolation FET 0x07, D3, D0 Low = LDO enabled.
High = LDO disabled. In addition, when EN_CHG = low, the
battery isolation FET is on; when EN_CHG = high, the battery
isolation FET is off.
1
When disable IC1 mode is active, the VINx supply must always be connected and the supply voltage level must fulfill the following condition: V
ISO_Bx
< VINx < 5.5 V.
2
When disable IC1 mode is active, the back gate of the LDO FET is not controlled. If the VINx pins are not connected to any voltage supply, the body diode of the LDO
FET can become forward biased and the voltage at VINx is V
ISO_Bx
– V
F
(V
F
is the forward voltage of the LDO FET body diode).