RICHTEK RT9519BGQW 芯片, 锂电池充电器, 1.2A, WQFN-20
General Description
The RT9519B is an integrated single cell Li-ion battery charger with Auto Power Path Management APPM. No
external MOSFETs are required. The RT9519B 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.
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
Battery Charging Current Control
Battery Regulation Voltage Control
Programmable Charging Current and Safe Charge Timer
Under Voltage Protection, Over Voltage Protection
Power Good and Charge Status Indicator
Optimized Charge Rate via Thermal Feedback
Thin 20-Lead WQFN Package
RoHS Compliant and Halogen Free
Applications
Digital Cameras
PDAs and Smart Phones
Portable Instruments