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RT6154A/B 是高效率的单电感 Buck-Boost 转换器,可在电池之类的宽输入电压范围内工作,解决输入电压可能高于、也可能低于输出电压的问题,电流输出能力可达 4A,开关电流峰值限制典型值在VIN = 3.6V时达到 5A,VIN = 2.1V时达到 2.6A。无论处于 Buck 模式或 Boost 模式,其回授回路的补偿都在内部予以实现;两个模式之间的转换是平顺无冲击的;其瞬态响应特性是经过优化的。它以 2.4MHz 工作频率进行全同步的操作,仅在低功率输出时才进入 PSM 模式以提高效率,但这是可以被禁止的。它也可以被强制地与外部时钟进行同步操作,该同步信号的频率可在 2.2MHz~2.6MHz 之间。RT6154A 的输出电压可用外部电阻分压器进行设定,但 RT6154B 的输出电压就是内部固定的,其值为 3.3V 。
输入电压范围:1.8V~5.5V
可调输出电压范围:1.8V~5.5V
VIN > 3.6V, VOUT = 3.3V 时,最大负载能力达 3A
以节能模式提升低功率输出时的效率
2.4MHz 工作频率,可被外来 2.2MHz~2.6MHz 频率信号同步
效率高达 96%
输入电流限制
内部补偿
符合 RoHS 规范,不含卤素
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