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RT9465是供可擕式設備使用的開關模式單節鋰離子/聚合物電池充電IC,含有同步架構PWM控制器和精確的電壓調節電路以及用於充電電流檢測的集成化電阻。RT9465的控制演算法經過優化,可根據預充電、快速充電 (恆壓充電和恆流充電) 等不同的充電模式改變充電參數,關鍵的充電參數可通過I2C介面進行程式控制。通過I2C介面也可對其溫度進行監控。RT9465具有欠壓保護、過壓保護 (對VBAT側和VBUS側同時進行)、熱調節、反向漏電保護和最低輸入電壓調節 (MIVR) 等特性。RT9465採用WQFN-16L 3x3封裝。
輸入電壓範圍:3.9V至14V
工作頻率1.5MHz/0.75MHz可選,支持最大95%占空比
VIN = 9V/5V時的最高效率可達92%/94%
VIN過壓保護閾值:14.5V
VIN欠壓保護閾值:3.8V
VIN欠壓鎖定電壓:3.3V
同時監控VIN和VBAT,故障時進入保護狀態
需要I2C通訊時從INT發出申請信號
最低輸入電壓可設定範圍:3.9V至13.4V (級差0.1V)
電池電壓可調節範圍:3.8V至5.06V (級差0.02V)
終止充電條件可調節範圍:0.6A至1.6A (級差0.1A)
平均輸出電流可調節範圍:0.6A至3A (級差0.1A)
結溫預警閾值可調節範圍:60°C至116°C (級差4°C)
最低輸入電壓調節誤差:±3%
電池充電電壓調節誤差:±1%
恒流輸出 (< 1A時) 調節誤差:±100mA (VBUS = 9V/12V)
恒流輸出 (> 1A時) 調節誤差:±10% (VBUS = 9V/12V)
結溫預警誤差:±3°C
熱停機結溫閾值:160°C
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