Datasheet

ADP5065 Data Sheet
Rev. D | Page 22 of 40
EXTERNAL RESISTOR FOR V_WEAK_SET
The ADP5065 charger features a V
WEAK
threshold, which can be
used for enabling the main PMU system. When battery voltage
at the BAT_SNS pin exceeds the V
WEAK
level, the ADP5065 pulls
down the SYS_ON_OK open-drain flag.
The V
WEAK
threshold can be programmed set either by I
2
C or by
an external resistor connected between the V_WEAK_SET pin
and GND. Recommended resistor values for each threshold are
listed in Table 13.
If an external resistor is not used, it is recommended to tie the
V_WEAK_SET pin to AGND for V
WEAK
to obtain its default value.
Table 13. Resistor Values for V_WEAK_SET Pin
Target Resistor Value E24 (kΩ) Actual Threshold (kΩ)
V
WEAK
Voltage
(Rising Threshold)
V
WEAK
Voltage
(Falling Threshold)
Short to GND Not applicable I
2
C (3.0 V default) I
2
C programmed − 100 mV
15 13.2 2.7 V 2.6 V
20
17.8
2.8 V
2.7 V
27 23.5 2.9 V 2.8 V
36 31.0 3.0 V 2.9 V
47 41.3 3.1 V 3.0 V
68 56.2 3.2 V 3.1 V
100 79.7 3.3 V 3.2 V
Open 122.4 3.4 V 3.3 V