DATASHEET
ISL78693 FN8891
Rev 1.00
December 12, 2016 Automotive Single-Cell LiFePO4 Battery Charger
The ISL78693 is an integrated single-cell Li-ion or Li-polymer
battery charger capable of operating with an input voltage
as low as 2.65V (cold crank case). This charger is designed to
work with various types of AC adapters or a USB port. Features The ISL78693 operates as a linear charger when the AC
adapter is a voltage source. The battery is charged in a
Constant Current/Constant Voltage (CC/CV) profile. The charge
current is programmable with an external resistor up to 1A.
The ISL78693 can also work with a current-limited adapter to
minimize the thermal dissipation. Reverse battery leakage 700nA The ISL78693 features charge current thermal foldback to
ensure safe operation when the printed circuit board’s thermal
dissipation is limited due to space constraints. Additional
features include preconditioning of an over-discharged battery,
an NTC thermistor interface for charging the battery in a safe
temperature range, and automatic recharge. The device is
specified for operation in ambient temperatures from -40В°C to
+85В°C and is offered in a 3x3mm thermally enhanced DFN
package. Accepts CV and CC types of adapters or USB bus power Related Literature Automotive systems Complete charger for single-cell Lithium chemistry batteries Integrated power transistor and current sensor 1% initial voltage accuracy Programmable CC current up to 1A Charge current thermal foldback NTC thermistor interface for battery temperature alert Preconditioning trickle charge Guaranteed to operate down to 2.65V after start-up Ambient temperature range: -40В°C to +85В°C AEC-Q100 qualified Applications eCall systems For a full list of related documents, visit our website
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