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Product Spec Banner
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RT4532 是一款高效率 LED 驅動器，專為背光應用設計。產品內建非同步升壓轉換器及蕭特基二極體，搭配電流源驅動架構，可支援每個通道最多 6 顆 LED，輸入電壓範圍涵蓋 2.5V 至 5.5V，適用於多種可攜式裝置背光系統。 RT4532 內建 I²C 介面，支援快速模式與高速模式通訊，可方便地進行背光控制。產品提供 256 階線性亮度調整功能，可精細設定背光 LED 亮度，同時也支援 PWM 調光方式，提供更靈活的亮度控制能力。 為了提升系統可靠性，RT4532 內建完整保護機制，包括輸入欠壓鎖定保護、過電流保護、輸出過壓保護及過溫保護。輸出過壓保護門檻可依應用需求設定為 16V 或 24V，以滿足不同背光模組設計要求。 RT4532 採用 WL-CSP-10B 0.87mm × 2.07mm 封裝，可有效節省電路板空間，非常適合輕薄型可攜式產品應用。
RT4532 電路圖
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<div class="spec-list"><ul class="lv1"><li>Input Voltage Range : 2.5V to 5.5V </li><li>Internal Schottky Diode </li><li>Fast-speed mode I<sup>2</sup>C Compatible Interface </li><li>Drive Up to 6 WLEDs in 4 String </li><li>External PWM Brightness Control </li><li>550k/1.1MHz Switching Frequency </li><li>Built-in Internal Soft-Start </li><li>I<sup>2</sup>C Programmable 256 Steps Linear Current Regulation </li><li>Up to 85% Efficiency with Small Magnetics </li><li>Programmable 16V/24V OVP </li><li>Current Accuracy ±5% and Current Balance ±3% </li><li>UVLO, OVP, OCP, OTP Protection </li><li>Shutdown Current : < 1μA </li><li>Temperature Range : -40°C to 85°C </li></ul></div>
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RT4532 訂購資訊
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RT4532
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RT4532
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<div class="spec-list"><ul class="lv1"><li>Cellular Phones </li><li>Digital Cameras </li><li>PDAs and Smart Phones </li><li>Portable Instruments </li></ul></div>
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