SC824 Single-cell Li-Ion Charger Tri-Mode with Timer and NTC POWER MANAGEMENT Features Description Single input 30V protected charger The SC824 is a single input triple mode (adapter/USB High, Adapter, USB High, USB Low modes USB Low) linear single-cell Li-Ion battery charger in a 10 Charging by current regulation, voltage regulation, lead 22 (mm) MLPD ultra-thin package. and thermal limiting Charging begins automatically when an input source is Programmable currents from 70mA to 1A applied to the charging input. The input is designed to Fast-charge current regulation 15% at 70mA, survive sustained input voltage up to 30V to protect 9% at 700mA against hot plug overshoot and faulty charging adapters. Constant voltage 4.2V, 1% regulation Thermal limiting protects the SC824 from excessive power Input voltage protection 30V dissipation. Current-limited adapter support capability reduces power dissipation in charger IC The SC824 provides three modes of charging: adapter USB modes automatically reduce charge current if mode, USB low power mode, and USB high power mode. needed to prevent USB Vbus overload Adapter mode charges up to 1A with the charging adapter Instantaneous CC-to-CV transition for faster charging operating either in voltage regulation or in current limit to Battery temperature NTC thermistor interface obtain the lowest possible power dissipation. A single Multi-stage charge timer for safety and alternative current programming pin is used to program precharge termination, IEEE Std. 1725-2006 compliant current, termination current, and fast-charge current in Termination on current or timer fi rst to occur fi xed proportions. The USB modes provide low and high Soft-start reduces adapter or USB load transients power fast-charge currents. The two USB modes dynami- High operating voltage range permits use of cally limit the charging load if necessary to automatically unregulated adapters prevent overloading the USB Vbus supply. Complies with CCSA YD/T 1591-2006 High-current USB Dedicated Charger compatible The SC824 provides a battery NTC thermistor interface to Ultra-thin 220.6 (mm) MLPD package disable charging when the battery temperature exceeds Lead-free and halogen-free programmed thresholds. An optional programmable WEEE and RoHS compliant multi-stage charge timer protects against a faulty battery, Applications or terminates charging on timeout if the system load is too great to terminate charging on current. A 45 minute Mobile phones top-off period following termination ensures a fully Personal Media Players charged battery. The monitor state restarts a charge cycle Personal Navigation Devices if the battery discharges after the charger has turned off . Typical Application Circuit R NPU SC824 V VIN EN NTC ADAPTER VSYS BAT R 2.2 F IPRGM Device MODE SELECT MODE IPRGM Load CPU GPIO R 1 F NTC RTIME STAT0 Thermistor 2.2 F GND STAT1 Battery Pack October 30, 2009 2009 Semtech Corporation 1SC824 Pin Confi guration Ordering Information Device Package (1)(2) SC824ULTRT MLPD-UT-10 22 SC824EVB Evaluation Board VIN 1 10 EN NTC Notes: (1) Available in tape and reel only. A reel contains 3,000 devices. TOP VIEW VSYS 2 9 BAT (2) Lead-free packaging only. Device is WEEE and RoHS compliant, and halogen-free. MODE 3 8 IPRGM RTIME47 STAT0 T GND56 STAT1 MLPD-UT10 22, 10 LEAD = 68C/W JA Marking Information 824 yw yw = Date Code 2