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RT9045 是简易的、具有成本效益的高速线性稳压器,设计用于生成符合 DDR 内存系统需求的总线终端电压,具有 1.8A 电流吐纳能力,输出误差在 20mV 以内。它的输出电压可以紧密跟踪 VDDQ / 2,这只需要两只分压电阻的配合;也可以强制性地在 REFEN 端加入希望的电压,使之成为跟踪的目标。RT9045 采用了高速差分放大器,可对输入、负载的瞬变提供超快的响应。此外,它还具有初始片电压偏移量极低、负载调节性能极好、双向的电流限制和过热关机保护等特性。
DDR VTT 应用的理想选择
电流吐纳能力:►DDRII 1.8A @ VIN = 1.8V ►DDRIII 1.5A @ VIN = 1.5V►LPDDRIII 1.2A @ VIN = 1.35V►DDRIV 1.2A @ VIN = 1.2V
集成功率 MOSFET
为 DDR 内存接口提供终端电压
可配合陶瓷输出电容稳定工作
全负载范围内保持高精度电压输出
外围组件少
以高阻关机状态支持 RAM 挂起功能
电流限制保护
过温保护
符合 RoHS 规范,不含卤素
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