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The RT7241A provides a complete power supply for DDR3/DDR3L/LPDDR3/DDR4 memory systems. It integrates an Advanced Constant On-Time (ACOT<sup>TM</sup>) mode synchronous Buck converter with a 1.5A sink/source tracking linear regulator. <p align="justify">The PWM converter provides low quiescent supply current, high efficiency, excellent transient response, and high DC output accuracy needed for stepping down high-voltage batteries to generate low-voltage chipset RAM supplies in notebook computers. The ACOT<sup>TM</sup> control scheme handles wide input/output voltage ratios with ease and provides a very fast response to load transients with no external compensators. </p><p align="justify">The 1.5A sink/source VTT LDO maintains fast transient response only requiring 10&mu;F ceramic output capacitance. The RT7241A supports all of the sleep state controls placing VTT at high-Z in S3 and discharging VDDQ and VTT in S4/S5. </p><p align="justify">The RT7241A provides complete protection features including OCP, OVP, UVP, and thermal shutdown. The RT7241A is available in the UQFN-18L 3x4 package.</p>
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  • DDR3/DDR3L/LPDDR3/DDR4完整的解决方案
  • PWM转换器 (VDDQ)
    ►100μA低静电供应电流@S3模式
    ►ACOTTM模式提供快速瞬态响应
    ►支持MLCC输出电容
    ►集成低导通电阻 MOSFET
  • 17mΩ高侧MOSFET
  • 4.5mΩ低侧MOSFET
    ►0.6~1.5V可调节输出范围 : 1.5V (DDR3), 1.35V (DDR3L), 1.2V (LPDDR3) 和 1.2V (DDR4)
    ►4.5~23V电池输入范围
    ►500kHz开关频率
    ►电阻可调节的谷底电流限制
    ►过压/欠压保护
    ►内部电压斜坡软启动
    ►电源良好信号指示
  • 1.5A LDO (VTT)
    ►具有1.5A电流吐纳能力
    ►LDO 输入可用于优化功率耗损
    ►仅需要10μF陶瓷输出电容
    ►集成分压器使 VTT 追踪 1/2 VDDQ
    ►VTT电压精准度±20mV
    ►支持高阻状态的S3及软关机的 S4/S5
  • 追踪模式的放电控制
  • 热始能覆晶封装(FC)用于12A VDDQ 转换器和1.5A VTT LDO
  • 符合RoHS规范，不含卤素
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DDR3/DDR3L/LPDDR3/DDR4 内存电源供应 笔记本电脑
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