High Efficiency, Main Power Supply Controller for Notebook Computers

General Description The RT8223A/B dual step-down, switch-mode power supply controller generates logic-supply voltages in battery-powered systems. The RT8223A/B includes two pulse-width modulation (PWM) controllers fixed at 5V/3.3V or adjustable from 2V to 5.5V. This device also features 2 linea

文件：369.74 Kbytes 頁數(shù)：26 Pages

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筆記本電腦主電源供應(yīng)控制器

RT8223A/B 是一款雙通道開關(guān)模式降壓控制器，用于電池供電系統(tǒng)中為邏輯電路部分提供電源供應(yīng)。它包含了兩組輸出電壓可為恒定的 5V/3.3V 或可在 2V~5.5V 調(diào)節(jié)的 PWM 控制器和兩組恒定電壓（5V/3.3V）的線性穩(wěn)壓器。每個線性穩(wěn)壓器可以提供 70mA 輸出電流，并可自動切換到 PWM 控制器的輸出以提高效率。RT8223A/B 包含內(nèi)置的上電時序管理能力、電源正常狀態(tài)輸出和內(nèi)置軟起動電路，還有內(nèi)置輸出軟放電功能可以避免關(guān)機(jī)期間的負(fù)電壓問題。它所使用的恒定導(dǎo)通時間（ COT ）模式下的 PWM 控制邏輯無需使用電流檢測電阻，在負(fù)載發(fā)生瞬態(tài)變化時具有 100ns 的響應(yīng)速度，同 ·寬輸入電壓范圍：6V~25V\n·兩路恒定 5V/3.3V 或 2V~5.5V 可調(diào)輸出，精度1.5%\n·5V/3.3V 恒定輸出線性穩(wěn)壓器輸出能力為 70mA\n·2V 參考電壓精度為 ±1%，負(fù)載能力為 50μA\n·COT 控制架構(gòu)，賦予其 100ns 快速負(fù)載瞬態(tài)響應(yīng)能力\n·由 TONSEL 端子狀態(tài)進(jìn)行工作頻率選擇\n·經(jīng) RDS(ON) 進(jìn)行電流檢測，可程序設(shè)計(jì)電流限制及使能信號共享一個端子\n·PWM、DEM 或超聲模式可選\n·內(nèi)置軟起動和軟放電功能\n·高達(dá) 97% 的效率\n·5mW 靜態(tài)功率消耗\n·熱關(guān)機(jī)保護(hù)\n·符合 RoHS 規(guī)范，不含;

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High Efficiency, Main Power Supply Controller for Notebook Computers

General Description The RT8223A/B dual step-down, switch-mode power supply controller generates logic-supply voltages in battery-powered systems. The RT8223A/B includes two pulse-width modulation (PWM) controllers fixed at 5V/3.3V or adjustable from 2V to 5.5V. This device also features 2 linea

文件：369.74 Kbytes 頁數(shù)：26 Pages

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High Efficiency, Main Power Supply Controller for Notebook Computer

General Description The RT8223L/M is a dual step-down, switch-mode power supply controller generating logic-supply voltages in battery-powered systems. It includes two Pulse Width Modulation (PWM) controllers adjustable from 2V to 5.5V, and also features fixed 5V/3.3V linear regulators. Each line

文件：397.58 Kbytes 頁數(shù)：24 Pages

RICHTEK

立锜科技

High Efficiency, Main Power Supply Controller for Notebook Computer

General Description The RT8223L/M is a dual step-down, switch-mode power supply controller generating logic-supply voltages in battery-powered systems. It includes two Pulse Width Modulation (PWM) controllers adjustable from 2V to 5.5V, and also features fixed 5V/3.3V linear regulators. Each line

文件：397.58 Kbytes 頁數(shù)：24 Pages

RICHTEK

立锜科技