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ADP5350ACPZ-1-R7 bảng dữ liệu(PDF) 26 Page - Analog Devices

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ADP5350ACPZ-1-R7 bảng dữ liệu(HTML) 26 Page - Analog Devices

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ADP5350
Data Sheet
Rev. B | Page 26 of 63
BATTERY CHARGER OPERATIONAL FLOWCHART
Figure 43. ADP5350 Charger Operational Flowchart
BATTERY VOLTAGE-BASED FUEL GAUGE
Overview
The ADP5350 Li-Ion battery fuel gauge is based on the voltage
measurement with a 12-bit ADC. SOC is calculated with a
battery model integrated in the ADP5350. Ten voltage values
based on the battery characterization and the battery internal
resistance at different temperatures must be written to the
V_SOC_x register and RBAT_x register of the ADP5350 for
SOC calculation.
Operation Mode
The ADP5350 fuel gauge, in shut down mode by default,
provides extremely low standby current consumption from the
battery. After the fuel gauge function is enabled, two operation
modes can be selected: active mode and sleep mode. The fuel
gauge operation mode is controlled by the I2C.
In active mode, the battery SOC is updated every 1 sec by the
sensed battery voltage, which achieves better accuracy and
indicates the remaining battery capacity but consumes 160 μA
VBUSOK
YES
NO
FAST CHARGE
YES
WATCHDOG
EXPIRED
START
tSAFE
ILIM = 100mA
TIME FAULT/
BAD BATTERY
RUN
BATTERY
DETECTION
IBUSLIM = HIGH
IVIN = ILIM
THERMLIM = HIGH
TEMP = TLIM
WATCHDOG
EXPIRED
START
tSAFE
ILIM = 100mA
TIME FAULT/
BAD BATTERY
(SEE SAFETY
TIMER SECTION)
CC MODE
CHARGING
CV MODE
CHARGING
NO
NO
CHARGE
COMPLETE
YES
YES
NO
NO
TRICKLE
CHARGE
YES
YES
NO
NO
YES
NO
NO
YES
NO
NO
YES
VBUS OK
VBUS OK
YES
YES
NO
NO
NO
YES
YES
NO
YES
YES
NO
YES
POWER-ON RESET
RESET ALL
REGISTERS
RUN
BATTERY
DETECTION
tSTART
EXPIRED
tWD
EXPIRED
tWD
EXPIRED
tSAFE/tTRK
EXPIRED
tSAFE/tCHG
EXPIRED
VBSNS =
VTRM
VBSNS ≤
3.5V
VBSNS ≤
VRCH
IOUT < IEND
POWER
DOWN
VBSNS <
VTRK
VBSNS <
VTRK
IVIN < ILIM
TEMP < TLIM



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