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SC810ULTRT Datasheet(PDF) 1 Page - Semtech Corporation |
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SC810ULTRT Datasheet(HTML) 1 Page - Semtech Corporation |
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1 / 20 page  © 2009 Semtech Corporation POWER MANAGEMENT 1 SC810 Single Input/Single Mode Single-cell Li-ion Charger Features Input voltage protection — 30V Single input charger Constant voltage — 4.2V, 1% regulation Charging by current and voltage regulation (CC/CV) Thermal limiting of charge current Programmable fast-charge current Current-limited adapter support — reduces power dis- sipation in charger IC Instantaneous CC-to-CV transition for faster charging Three termination options — float-charge, automatic re-charge, or forced re-charge to keep the battery topped-off after termination without float-charging Soft-start reduces adapter load transients High operating voltage range permits use of unregu- lated adapters Complies with CCSA YD/T 1591-2006 Space saving 2×2×0.6 (mm) MLPD package Pb free, Halogen free, and RoHS/WEEE compliant Applications Mobile phones MP3 players GPS handheld receivers Description The SC810 is a linear single-cell Li-ion battery charger in a 6 lead 2×2mm MLPD Ultra-thin package. The input will survive sustained input voltage up to 30V to protect against hot plug overshoot and faulty charging adapters. Charging begins automatically when a valid input source is applied. Thermal limiting protects the SC810 from excessive power dissipation. It can be programmed to turn off when charging is complete or to continue operat- ing as an LDO regulator while float-charging the battery. The input will charge with an adapter operating in voltage regulation or in current-limit to obtain the lowest possible power dissipation by pulling the input voltage down to the battery voltage. The maximum fast-charge current setting is 1A. Charge current is programmed with a single resistor. Pre- charge and termination current are fixed at 20% and 10%, respectively, of the programmed fast-charge current. Charge current steps up to the programmed value (soft starts) to reduce load transients on the charging adapter. Device Load Battery Pack 2.2 μF VADAPTER 2.2 μF VIN IPRGM GND STATB ENB BAT SC810 Typical Application Circuit September 17, 2009 |
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