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RT9525 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT9525 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 15 page  RT9525 1 DS9525-01 May 2011 www.richtek.com Linear Single Cell Li-Ion Battery Charger with Auto Power Path General Description The RT9525 is an integrated single cell Li-ion battery charger with Auto Power Path Management (APPM). No external MOSFETs are required. The RT9525 enters sleep mode when power is removed. Charging tasks are optimized by using a control algorithm to vary the charge rate including pre-charge mode, fast charge mode and constant voltage mode. For the RT9525, the charge current can also be programmed with an external resister. Additionally, the internal thermal feedback circuitry regulates the die temperature to optimize the charge rate for all ambient temperatures. The charging task will always be terminated in constant voltage mode when the charging current reduces to the termination current of 20% ICHG_FAST. Other features include under voltage protection and over voltage protection for the VIN supply. Features 28V Maximum Rating for VIN Power Selectable Power Current Limit (0.1A / 0.5A / 1.5A) Integrated Power MOSFETs Auto Power Path Management (APPM) Programmable Charging Current Timer and Safe Charge Timer Under Voltage Protection Over Voltage Protection Power Good and Charger Status Indicator Optimized Charge Rate via Thermal Feedback 16-Lead WQFN Package RoHS Compliant and Halogen Free Applications 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. Pin Configurations (TOP VIEW) WQFN-16L 3x3 BAT TS BAT NC SYS SYS 12 11 10 9 13 14 15 16 1 2 3 4 8 7 6 5 GND 17 EN CHG Marking Information JG=YM DNN JG = : Product Code YMDNN : Date Code RT9525 Package Type QW : WQFN-16L 3x3 (W-Type) Lead Plating System G : Green (Halogen Free and Pb Free) |
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