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RT7299B是一个高效率,单片同步降压型DC / DC转换器,在4.5V至18V的输入电源下可提供高达8A的输出电流。RT7299B的电流模式架构和外部补偿使得在很宽范围的负载及输出电容中,都可得到最佳的瞬态响应。逐周期电流限制保护元件不受输出短路影响,软启动功能可在启动过程中防止了输入电流过冲。故障保护包括输出欠压保护、输出过电压保护和过热保护。低电流消耗之电源关闭模式会将输出关闭,有助于电池供电系统的电源管理。
低 RDS(ON) MOSFET 开关:26mΩ/19mΩ
输入电压范围:4.5V至18V
可调切换频率:200kHz至1.6MHz
电流模式控制
外部时钟同步:200kHz至1.6MHz
精确的参考电压:0.6V ± 1.25%
单调启动进入预偏置输出
可调软启动
电源良好指示
可选的Hiccup Mode和Latch-Off Mode欠电压保护
过温和过电压保护
输入欠电压锁定
符合RoHS规范与无卤特性
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