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SD4054 Datasheet(PDF) 1 Page - SHOUDING Shouding Semiconductor |
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SD4054 Datasheet(HTML) 1 Page - SHOUDING Shouding Semiconductor |
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1 / 14 page  count make the SD4054 ideally suited for portable SH OU D IN G SD 4054 SD4054 SD4054-datasheet V1.0 Sep.-2006 the SD4054 automatically ent SD4054 can be put into shut SD4054 automatically terminates the charge cycle when he SD4054 is s The SD4054 is a complete 1-1 600mA Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT General Description constant-current/constant- voltage linear charger for single cell lithium-ion batteries. Its ThinSOT package and low external component applications. Furthermore, t pecifically designed to work within USB power specifications. No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET architecture. Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature. The charge voltage is fixed at 4.2V, and the charge current can be programmed externally with a single resistor. The the charge current drops to 1/10th the programmed value after the final float voltage is reached. When the input supply (wall adapter or USB supply) is removed, ers a low current state, dropping the battery drain current to less than 2µA. The down mode, reducing he supply current to 25µA.Other features include charge current monitor, undervoltage lockout, automatic recharge and a status pin to indicate charge termination and the presence of an input voltage. Ordering Information □ □ □ Package B5:SOT23-5 Features Programmable Charge Current Up to 800mA No MOSFET, Sense Resistor or Blocking Diode Required Complete Linear Charger in ThinSOT Package for Single Cell Lithium-ion Batteries Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate Without Risk of Overheating Charges Single Cell Li-Ion Batteries Directly from USB Port Preset 4.2V Charge Voltage with ± 1% Accuracy Charge Current Monitor Output for Gas Gauging Automatic Recharge Soft-Start Limits Inrush Current Available in 5-Lead SOT-23 Package 2.9V Trickle Charge Threshold C/10 Charge Termination 25mA Supply Current in Shutdown 2.9V Trickle Charge Threshold Applications Portable Media Players/MP3 players Cellular and Smart mobile phone Charging Docks and Cradles Bluetooth Applications Marking Information Please see website. F:PB-Free www.shouding.net |
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