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SC810 Datasheet(PDF) 1 Page - Semtech Corporation |
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SC810 Datasheet(HTML) 1 Page - Semtech Corporation |
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1 / 19 page  © 2008 Semtech Corporation POWER MANAGEMENT 1 SC810 Single Input/Single Mode Single-cell Li-ion Charger Features Single input charger Constant voltage — 4.2V, 1% regulation Fast-charge current regulation — 15% at 70mA, 9% at 700mA Three mode charging — current regulation, voltage regulation, and thermal limiting Input voltage protection — 30V Current-limited charging support — reduces power dissipation 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 unregulated adapters Complies with CCSA YD/T 1591-2006 Space saving 2x2x0.6 (mm) MLPD package WEEE and RoHS 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 2x2 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 February 26, 2008 |
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