Semtech Announces SC824, a Linear, Triple Mode and Single-Cell Lithium-Ion Battery Charger in a Ten-Lead 2x2mm MLPD Package for Handheld Devices

The SC824 is a single input triple mode (adapter/USB High, USB Low) linear single-cell Li-Ion battery charger in a 10 lead 2×2 (mm) MLPD ultra-thin package. The SC824 provides three modes of charging: adapter mode, USB low power mode, and USB high power mode. Adapter mode charges up to 1A with the charging adapter operating either in voltage regulation or in current limit to obtain the lowest possible power dissipation. A single current programming pin is used to program precharge current, termination current, and fast-charge current in fixed proportions. The USB modes provide low and high power fast-charge currents. The two USB modes dynamically limit the charging load if necessary to automatically prevent overloading the USB Vbus supply. The SC824 provides a battery NTC thermistor interface to disable charging when the battery temperature exceeds programmed thresholds. An optional programmable multi-stage charge timer protects against a faulty battery, or terminates charging on timeout if the system load is too great to terminate charging on current. A 45 minute top-off period following termination ensures a fully charged battery. The monitor state restarts a charge cycle if the battery discharges after the charger has turned off…

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SC824
(Pictures: Semtech)