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RT5760 是一款简单易用的 1A 同步降压 DC-DC 转换器,输入电压范围为 2.5V 至 6V。产品内置精准的 0.6V 基准电压,并集成低导通电阻(RDS(ON))功率 MOSFET,可在小型 SOT-563(FC)封装中实现高转换效率。 RT5760 采用先进固定导通时间控制(Advanced Constant On-Time,ACOT®)架构,仅需少量外围元件即可提供超快速瞬态响应,并能够在输入电压、负载及输出电压变化范围内保持近乎固定的开关频率。 RT5760A 与 RT5760C 采用自动省电模式(PSM),可在轻载条件下保持高转换效率;RT5760B 与 RT5760D 则采用强制 PWM 模式(Forced PWM),有助于满足对输出电压稳压精度要求较高的应用需求。 RT5760 可同时检测高侧与低侧 MOSFET 电流,以提供可靠的过电流保护功能。产品具备逐周期限流保护(Cycle-by-Cycle Current Limit Protection),可防止因输出短路、过电流或电感饱和等异常情况造成器件损坏。 此外,内置软启动(Soft-Start)功能可有效抑制启动期间的浪涌电流。产品还集成输入欠压锁定保护(UVLO)、输出欠压保护(UVP)及过温保护(OTP),确保在各种工作条件下均能安全稳定运行。
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<div class="spec-list"><ul class="lv1"><li>Input Voltage Range from 2.5V to 6V </li><li>Integrated 120mΩ and 80mΩ FETs </li><li>1A Output Current, up to 95% Efficiency </li><li>100% Duty Cycle for Lowest Dropout </li><li>1% Internal Reference Voltage </li><li>2.2MHz Typical Switching Frequency </li><li>Power Saving Mode for Light Loads (RT5760A/C) </li><li>Low Quiescent Current: 25μA (Typ.) </li><li>Fast Advanced Constant On-Time (ACOT<sup>®</sup>) Control </li><li>Internal Soft Startup (0.6ms) </li><li>Enable Control Input </li><li>Power Good Indicator (RT5760A/B) </li><li>Both FETs Over-Current Protection </li><li>Negative Over-Current Protection (RT5760B/D) </li><li>Input Under-Voltage Lockout Protection </li><li>Hiccup-Mode Output Under-Voltage Protection </li><li>Over-Temperature Protection </li><li>RoHS Compliant and Halogen Free </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>Mobile Phones and Handheld Devices </li><li>STB, Cable Modem, and xDSL Platforms </li><li>WLAN ASIC Power / Storage (SSD and HDD) </li><li>General Purpose for POL LV Buck Converter </li></ul></div>
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