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RT8253A是一個高效率,單片同步降壓型DC / DC轉換器,在4.5V至23V的輸入電源下可提供高達3A的輸出電流。RT8253A的電流模式架構和外部補償使得在很寬範圍的負載及輸出電容中,都可得到最佳的瞬態響應。逐週期電流限制保護元件不受輸出短路影響,軟啟動功能可在啟動過程中防止了輸入電流過衝。故障保護包括輸出欠壓保護和過溫保護。低電流 (<3μA) 消耗之電源關閉模式會將輸出關閉,有助於電池供電系統的電源管理。RT8253A提供SOP- 8 (裸露焊盤)封裝。
±1.5% 高精確度回饋電壓
輸入電壓範圍:4.5V至23V
3A輸出電流
集成N-MOSFET開關
電流模式控制
340kHz固定操作頻率
輸出電壓可調:0.8V至20V
效率最高可達95%
可調軟啟動
可採用低ESR的陶瓷電容做為輸出電容
逐周期過電流保護
輸入欠電壓鎖定
輸出欠壓保護
過熱保護
符合RoHS規範與無鹵特性
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