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RT9258 是双相同步 Buck PWM 控制器,集成了驱动器,是高性能图像处理器的理想选择。它采用电压模式控制架构,MOSFET 驱动器工作电压为 5V,集成了自举二极管,具有输出电流监控和多种保护功能,采用 WQFN-24L 4x4 封装。它采用电感电流 DCR 检测技术以实现电流平衡和过流保护,采用外部输入的参考电压源,反馈电压被调节至和参考输入相一致。它具有输出电流指示、工作频率可调、软启动可调、PG 指示、外部补偿、使能控制等特性。
12V 单电源双相电源转换器
集成 5V 上桥驱动器和 12V 下桥驱动器
有内部稳压 5V 输出
输出电压精度高
可选内/外参考电压
差分电感电流 DCR 检测法
外部可编程电压下沉控制
使能控制
工作频率可调
软启动可调
PG 指示和输出电流指示
可调过流保护
欠压保护
过热保护
符合 RoHS 规范,不含卤素
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