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RT5091A/RT5091B 是一款专为固态硬碟(SSD, Solid State Drive)设计的完整电源管理解决方案,支援 3.3V 或 5V 专用输入电源。产品整合三组高效率同步降压稳压器(Synchronous Buck Regulators)及一组 LDO,可由单一电源输入产生多组不同输出电压,并提供受控的上电时序(Power-On Sequence),以支援不同电压识别码(VID)需求的应用。 RT5091A/RT5091B 可提供可配置的输出电压,用于为 ASIC 核心电源、DDR 记忆体、Flash I/O 以及 PHY 电路供电。透过专用 I²C 介面,产品可支援动态电压调整(DVS, Dynamic Voltage Scaling)功能,并提供睡眠模式(Sleep Mode)以降低待机功耗,提升系统整体能源效率。
RT5091A/RT5091B 电路图
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<div class="spec-list"><ul class="lv1"><li>Input Supply Voltage Range : 2.8V to 5.5V </li><li>Three High-Efficiency Configurable Low-Voltage Buck Converters at Default Switching Frequency of 2MHz <ul class="lv2"> <li></li><li>CH1 for ASIC Core Power : Output Current : 4A Output Voltages Programmable by REFIN Pin or 0.7V to 1.3V in 10mV/Step Via I<sup>2</sup>C </li><li>CH2 for DDR Power : Output Current : 2A Output Voltages Programmable by FB2 Pin </li><li>CH3 for Flash I/O Power : Output Current : 2A Output Voltages Programmable by FB3 Pin </li></ul> </li><li>One LDO of Low Quiescent Current <ul class="lv2"> <li></li><li>LDO for Analog and PHY Power : Output Current : 300mA Output Voltages Programmable by FB4 Pin </li></ul> </li><li>Gate Control for External N-MOSFET Against Inrush Current from Power Input </li><li>Internal Soft-Start and Current Limit Protection for CH1 to CH3 and LDO </li><li><span style="text-decoration: overline">STANDBY</span> Pin for Sleep Mode Control </li><li>Two Output Pins to Control External Regulators/ Switches </li><li>One Input Pin to Sense External Regulators/ Switches Output Voltage </li><li>High-Speed Mode I<sup>2</sup>C Interface for CH1 Output Voltage Programming </li><li>PGOOD Indicator for VSYS, CH1 to CH3, and LDO Output Voltages Monitoring </li><li>RST_L Indicator for Reset Condition of VSYS </li><li>Power-On Sequence Control During Start-up </li><li>Over-Voltage Protection (OVP), Under-Voltage Protection (UVP), Under-Voltage Lockout (UVLO), and Thermal Shutdown Protection </li><li>Small 32-Lead WQFN Package </li></ul></div>
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RT5091A/RT5091B 订购信息
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<div class="spec-list"><ul class="lv1"><li>Solid State Drives </li></ul></div>
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