资料介绍
The ISL9301 is a fully integrated high input voltage
single-cell Li-ion battery charger with power path
management function. This charger performs the CC/CV
charge function required by Li-ion batteries. The charger
accepts an input voltage up to 28V but is disabled when the
input voltage exceeds 10.5V OVP threshold. The 28V rating
eliminates the overvoltage protection circuit required in a
low-voltage charger. The charge current and the
end-of-charge (EOC) current are programmable with
external resistors. When the battery voltage is lower than
2.8V, the charger preconditions the battery with 16% of the
programmed charge current. When the charge current
reduces to the programmable EOC current level during the
CV charge phase, the EOC indicator (CHG) will toggle to
logic LOW to indicate the end-of-charge condition. The
charger will continue to charge until the user programmed
timeout interval has elapsed, then the charger is terminated.
The ISL9301 uses separate power paths to supply the
system load and charge the battery. This feature allows the
system to immediately operate with a completely discharged
battery. This feature also allows the charge to terminate
when the battery is full while continuing to supply the system
with the input source, thus minimizing unnecessary
charge/discharge cycles and improving the battery life.
single-cell Li-ion battery charger with power path
management function. This charger performs the CC/CV
charge function required by Li-ion batteries. The charger
accepts an input voltage up to 28V but is disabled when the
input voltage exceeds 10.5V OVP threshold. The 28V rating
eliminates the overvoltage protection circuit required in a
low-voltage charger. The charge current and the
end-of-charge (EOC) current are programmable with
external resistors. When the battery voltage is lower than
2.8V, the charger preconditions the battery with 16% of the
programmed charge current. When the charge current
reduces to the programmable EOC current level during the
CV charge phase, the EOC indicator (CHG) will toggle to
logic LOW to indicate the end-of-charge condition. The
charger will continue to charge until the user programmed
timeout interval has elapsed, then the charger is terminated.
The ISL9301 uses separate power paths to supply the
system load and charge the battery. This feature allows the
system to immediately operate with a completely discharged
battery. This feature also allows the charge to terminate
when the battery is full while continuing to supply the system
with the input source, thus minimizing unnecessary
charge/discharge cycles and improving the battery life.
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