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RT9481 是供鋰離子電池行動電源和其它可擕式產品使用的全集成、易使用的電源配置,簡稱 EZPBSTM (Easy to Use Power Bank Solution)。它在單晶片的內部包含了具升壓功能的切換式充電器、ADC轉換器、USBOUT負荷開關、符合BC1.2檢測的電源轉接器、DCP控制器與LDO。
系統
高精準度電壓和電流調節►充電電壓調節精度:±1%►充電電流調節精度:±0.1A►±3%升壓USBOUT電壓
過溫保護
反向漏電保護功能,預防電池漏電
內置USBOUT DCP 控制器
內置USBOUT 連接/分離檢測
內置USBOUT 輕載檢測
內置電流調節負載開關
熱調節及輸出電流短路保護
內置符合BC1.2檢測的電源轉接器
內置精準的ADC以測量VBAT, VBUS, TS, IBAT , USBOUT和IUSBOUT
內置線性穩壓器 (LDO)
事件通知時輸出中斷
搭配400kHz的I2C介面
充電模式
充電電壓調節:3.65V~4.6V
充電電流調節:0.7A~2.7A
最小輸入電壓調節(MIVR):4.2V~4.8V
一般輸入電流調節(AICR):0.1A~2A
充電終端電流:0.7A~2.7A
預充門檻:2.3V~3.8V
預充電流:0.2A~0.5A
熱調節
VMID欠壓保護
VBUS過壓保護
電池過壓保護
不良電源轉接器檢測
升壓模式
升壓輸出電流高達3A
升壓輸出電壓:3.65V~5.2V
電池欠壓保護:2.5V~3.2V
VMID過壓保護
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