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RT4832是闪光灯LED驱动器、背光WLED驱动器和DSV驱动器的整合全方位电源解决方案。闪光LED驱动器提供高达2通道 1.5A的应用。背光WLED驱动器可为10只WLED应用程序提供高达36V的输出。并提供1024步阶LED电流与对数/线性曲线。DSV由一个单电感升压和反相电荷泵实现，与双电感相比，它们可提供最小的EVB面积。负输出功率 (CPOUT) 来自升压输出 (LCMOUT)。它还提供DSV正电压 (POS)，通过LDO通过降低功率噪声。它们的范围可以分别从±4V至±6V / 每步阶50mV编程。闪光灯升压转换器工作频率为2MHz / 4MHz。4MHZ频率解决方案允许使用简单及 low-profile的组件。手电模式电流可以从25mA到375mA，每步阶25mA。频闪模式电流范围为100mA至1.5A / 每步阶100mA。<br>DSV驱动TFT-LCD面板高达10“（从SFF到MFF，例如平板计算机）。这两个输出导轨通常连接到Source Driver IC。宽输入电压范围为2.5V至5.5V，可优化单节电池应用（锂离子，镍锂，锂聚合物），对称输出电流高达80mA。<br>RT4832提供完整的保护如VIN欠压锁定、Vin监控保护、过流保护、过压保护、LED短路保护、VOUT短路保护和过温保护。<br>RT4832采用WL-CSP-30B 2.24x2.64 (BSC) 封装。
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<div class="spec-list"><ul class="lv1"><li>输入电压范围：2.5V至5.5V </li><li>内部软启动，UVLO，OTP，OCP </li><li>典型关断电流：< 1μA </li><li>-40至85°C温度范围 </li><li>2通道背光LED驱动器 <ul class="lv2"> <li></li><li>在两串中驱动多达10只WLED </li><li>外部PWM引脚控制和I<sup>2</sup>C可编程11位线性和指数亮度 </li><li>LED电流精准度±5% (> 500μA)，±3% (> 5mA) </li><li>I<sup>2</sup>C可编程OVP 18 / 22 / 25/ 29 / 33 / 36V </li></ul> </li><li>2通道闪光灯LED驱动器 <ul class="lv2"> <li></li><li>手电筒模式电流从25mA到375mA，2通道每步阶25mA </li><li>频闪模式电流从100mA到1.5A，2通道每步阶100mA </li><li>I<sup>2</sup>C可编程闪光灯安全定时器，从32ms到1024ms，每步阶32ms </li><li>高精准度安全定时器±10%，电流精准度±4% (> 375mA)，电流匹配度±7% (> 375mA) </li><li>VIN监视器保护从2.5V至3.2V / 步阶0.1V </li><li>可选输入电流限制1.9 / 2.8A </li><li>2MHz / 4MHz的闪光灯LED开关频率 </li><li>闪光灯LED1 / 2短路保护和输出短路保护 </li><li>独立引脚的Txmask保护 </li></ul> </li><li>DSV <ul class="lv2"> <li></li><li>I<sup>2</sup>C可编程输出电压 </li><li>默认具弹性的升压电压、POS和CPOUT </li><li>稳压电压输出：4V至6V / 步阶50mV </li><li>正电压输出：4至6V，每步阶50mV </li><li>负电压输出：-4至-6V / 每步阶50mV </li><li>用户选择输出快速放电模式或关机时浮动模式 </li><li>通过两个外部引脚独立的正负启用控制 </li><li>关机状态下与负载的连接断开、OCP和正/负SCP功能 </li></ul> </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>智能型手机 </li><li>Probable Instruments </li></ul></div>
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