ADP5065ACBZ-1-R7 datasheet(22/40 Pages) AD

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ADP5065

Data Sheet

Rev. D | Page 22 of 40

EXTERNAL RESISTOR FOR V_WEAK_SET

The ADP5065 charger features a VWEAK threshold, which can be

used for enabling the main PMU system. When battery voltage

at the BAT_SNS pin exceeds the VWEAK level, the ADP5065 pulls

down the SYS_ON_OK open-drain flag.

The VWEAK threshold can be programmed set either by I2C 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 VWEAK to obtain its default value.

Table 13. Resistor Values for V_WEAK_SET Pin

Target Resistor Value E24 (kΩ)

Actual Threshold (kΩ)

VWEAK Voltage

(Rising Threshold)

VWEAK Voltage

(Falling Threshold)

Short to GND

Not applicable

I2C (3.0 V default)

I2C programmed − 100 mV

13.2

2.7 V

2.6 V

17.8

2.8 V

2.7 V

23.5

2.9 V

2.8 V

31.0

3.0 V

2.9 V

41.3

3.1 V

3.0 V

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

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