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FC5754 Datasheet(PDF) 1 Page - First Silicon Co., Ltd |
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FC5754 Datasheet(HTML) 1 Page - First Silicon Co., Ltd |
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1 / 19 page  SEMICONDUCTOR TECHNICAL DATA FC5754 2014. 11. 04 1/19 Revision No : 0 Standalone Linear Li-Ion Battery Charger with Thermal Regulation in SOT-23-5 and E-SOP-8 General Description The FC5754 is a complete linear charger for single cell lithium-ion batteries. With small SOT-23-5 package and few external components, FC5754 is well suited for portable applications. In addition, the FC5754 is specifically designed to work within USB power specifications. No external sense resistor and blocking diode are required. Charging current can be programmed externally with a single resistor. The built-in thermal regulation facilitates charging with maximum power without risk of overheating. The FC5754 always preconditions the battery with 1/10 of the programmed charge current at the beginning of a charge cycle, until 40υs after it verifies that the battery can be fast-charged. The FC5754 automatically terminates the charge cycle when the charge current drops to 1/10th the programmed value after the final float voltage is reached. The FC5754 consumes zero reverse current from the battery at standby, shutdown and sleep modes. This feature reduces the charge and discharge cycles on the battery, further prolonging the battery life. The FC5754 can also be used as a LDO when battery is removed. Other features include shutdown mode, charge current monitor, under voltage lockout, automatic recharge and status indicator. Features Programmable charge current up to 1A No MOSFET, sense resistor or blocking diode required Complete linear charger both in SOT-23-5 and E-SOP-8 for single cell Lithium-ion batteries Typical zero reverse current from battery Thermal regulation maximizes charge rate without risk of overheating Charges single cell Li-ion batteries directly from USB port Act as a LDO when battery is removed Preset 4.2V/4.35V charge voltage with ±1% accuracy Automatic recharge Charge status indicator C/10 charge termination 45uA shutdown supply current 2.9V trickle charge threshold Soft-start limits inrush current RoHS compliant and Pb-free Applications Wireless handsets Hand-held instruments Portable information appliances Bluetooth application Charging docks and cradles Typical Application Diagram Typical Performance Characteristics Complete Charge Cycle (850mAh Battery) 580 mA Charger LDO Mode (Battery Removed) Time (1000s/DIV) |
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