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RT6167 是一款高效率、单电感且采用 ACOT<sup>®</sup>（先进恒定导通时间）架构的单芯片同步升降压转换器，可在 2.2V 至 5.5V 的输入电压范围内提供高达 3A 的输出电流。它可调节 2.025V 至 5.2V 的可数字编程输出电压，使其适用于广泛的输入电源应用，无论输入电压是低于、高于或等于输出电压皆可。ACOT<sup>®</sup> 控制架构具备出色的线路 / 负载瞬态响应、降压与升压模式之间的无缝转换，并且无需复杂的外部补偿，即可搭配小型陶瓷输出电容提供稳定运行。用户可在 VSEL 引脚分别处于低电平与高电平时，从表 2 的 128 种类型中选择两个输出电压。RT6167 可通过调整 MODE 引脚采用特定的切换方式。当设置为低电平时，RT6167 会在自动 PFM（脉冲频率调制）模式下运行，具备典型值为 2μA 的低静态电流设计，可在轻载运行期间保持高效率。在较高负载下，该器件会自动切换至 2.2MHz 固定频率控制，并可通过小型封装滤波元件有效平滑开关纹波电压。集成式低 R<sub>DS(ON)</sub> 功率 MOSFET 在重载条件下展现出优异效率。在关断模式下，供电电流典型值为 0.1μA，有助于降低功耗。若有声学噪声疑虑或需要固定频率运行，RT6167 可在超声波模式（USM）或强制 PWM 模式（FPWM）下运行。RT6167 采用小型 WL-CSP-15B 1.4x2.3（BSC）封装。建议结温范围为 −40°C 至 125°C，环境温度范围为 −40°C 至 85°C。
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<li class="mv5"> Automatic Seamless Mode Transition with Real Buck, Buck-Boost, and Boost Operation<br /> </li><li class="mv5"> Input Voltage Range: 2.2V to 5.5V<br /> </li><li class="mv5"> Output Voltage Range: 2.025V to 5.2V (25mV/Steps) <br /> </li><li class="mv5"> Maximum Continuous Output Current <br /> - Up to 2.5A for V<sub>IN</sub> ≥ 2.5V, VOUT = 3.3V<br /> - Up to 3A for V<sub>IN</sub> ≥ 3V, VOUT = 3.3V<br /> - Up to 2A for V<sub>IN</sub> ≥ 3V, VOUT = 5V<br /> </li><li class="mv5"> Up to 95% Efficiency (V<sub>IN</sub> = 3.8V, V<sub>OUT</sub> = 3.3V, I<sub>LOAD</sub> = 1A)<br /> </li><li class="mv5"> 2μA Non-Switching Low Quiescent Current<br /> </li><li class="mv5"> Automatic PFM Mode, Ultra-Sonic Mode, and Forced PWM Mode Selection<br /> </li><li class="mv5"> Power Status Indication via PG Pin<br /> </li><li class="mv5"> Protections: OCP, UVLO, OTP, OVP, UVP<br /> </li><li class="mv5"> 15-Ball WL-CSP Package</li>
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<li class="mv5"> Smartphones and Tablets<br /> </li><li class="mv5"> Portable Devices<br /> </li><li class="mv5"> Wearable Devices<br /> </li><li class="mv5"> System Pre-Regulators<br /> </li><li class="mv5"> Point-of-Load Regulators<br /> </li><li class="mv5"> Wifi Modules<br /> </li><li class="mv5"> USB VCONN Supplies<br /> </li><li class="mv5"> TWS Earbud Chargers</li>
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