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RT9526 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT9526 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 14 page  RT9526 1 DS9526-01 April 2011 www.richtek.com Pin Configurations (TOP VIEW) WDFN-8L 2x2 Linear Single Cell Li-Ion Battery Charger with Input Over Voltage Protection General Description The RT9526 is a fully integrated low cost single cell Li-ion battery charger ideal for portable applications. The RT9526 is capable of being powered up from AC adapter and USB (Universal Serial Bus) port inputs. The RT9526 enters sleep mode when supplies are removed. The RT9526 optimizes the charging task by using a control algorithm including preconditioning mode, fast charge mode, and constant voltage mode. The charging task will remain in constant voltage mode to hold the battery in a full charge condition. The charge current can be programmed with an external resistor. The internal thermal feedback circuitry regulates the die temperature to optimize the charge rate under all ambient temperatures. The RT9526 features 28V maximum rating voltage for VIN. The other features are under voltage protection and over voltage protection for the AC adapter supply. The RT9526 is available in WDFN-8L 2x2, WDFN-8L 2x3 and SOT-23-6 packages to achieve best solution for PCB space and total BOM cost saving considerations. Features 28V Maximum Rating for AC Adapter Internal Integrated Power FETs AC Adapter Power Good Status Indicator Programmed Charging Current Charge Status Indicator Programmed End of Charge Current Under Voltage Protection Over Voltage Protection Thermal Feedback Optimizing Charge Rate RoHS Compliant and Halogen Free Applications Cellular Phones Digital Cameras PDAs and Smart Phones Portable Instruments Ordering Information Note : Richtek products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. SOT-23-6 WDFN-8L 2x3 VIN ENB PGB BATT ISET IMIN GND CHG_SB 9 7 6 5 1 2 3 4 8 ISET VIN ENB PGB BATT GND CHG_SB 7 6 5 1 2 3 4 8 9 IMIN CHG_SB GND VIN IMIN ISET BATT 4 23 5 6 RT9526 Package Type E : SOT-23-6 QW : WDFN-8L 2x2 (W-Type) QWA : WDFN-8L 2x3 (W-Type) Lead Plating System G : Green (Halogen Free and Pb Free) |
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