Four-String, White LED Driver for LCD Backlight Applications

GENERAL DESCRIPTION The ADD5211 is a 4 channel, white LED driver for backlight applications based on high efficiency, current mode, step-up converter technology. The boost controller drives an external MOSFET switch for step-up regulation from an input voltage of 4.5 V to 40 V and a pin adjusta

文件：167.47 Kbytes 頁(yè)數(shù)：6 Pages

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適合LCD背光應(yīng)用的4串白光LED驅(qū)動(dòng)器

ADD5211是一款基于高效率、電流模式、升壓轉(zhuǎn)換器技術(shù)的四串白光LED驅(qū)動(dòng)器，適合背光應(yīng)用。 升壓控制器以4.5 V至40 V的輸入電壓以及介于200 kHz和1.2 MHz之間的引腳可調(diào)節(jié)工作頻率，驅(qū)動(dòng)外部MOSFET開關(guān)，以便執(zhí)行升壓調(diào)節(jié)。 采用可調(diào)節(jié)的UVLO功能，以降低關(guān)斷時(shí)的輸入電流。 \nADD5211內(nèi)置四個(gè)經(jīng)過(guò)調(diào)節(jié)的電流吸收器，可實(shí)現(xiàn)均勻的亮度。 每個(gè)電流吸收器的輸出電流可從40 mA驅(qū)動(dòng)至高達(dá)200 mA，并且LED驅(qū)動(dòng)電流可由外部電阻通過(guò)引腳進(jìn)行調(diào)整。 ADD5211集成輸入PWM接口，最多能驅(qū)動(dòng)四個(gè)并聯(lián)LED串，各串由多個(gè)LED串聯(lián)在一起。 \n其它特性包括LED短路保 基于感性升壓控制器的白光LED驅(qū)動(dòng)器\n寬輸入電壓范圍： 4.5 V至40 V\n自適應(yīng)輸出電壓，最大程度地降低功耗\n可調(diào)節(jié)工作頻率： 200 kHz至1.2 MHz \n可編程外部MOSFET開關(guān)上升/下降時(shí)間 \n通過(guò)內(nèi)部MOSFET最多驅(qū)動(dòng)4個(gè)LED電流吸收器\n更多特性參見數(shù)據(jù)手冊(cè) \n開漏故障指示器 \nLED開路和LED短路保護(hù) \n熱關(guān)斷 \n欠壓閉鎖(UVLO) \n24引腳、4 mm × 4 mm LFCSP ;

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Four-String, White LED Driver for LCD Backlight Applications

GENERAL DESCRIPTION The ADD5211 is a 4 channel, white LED driver for backlight applications based on high efficiency, current mode, step-up converter technology. The boost controller drives an external MOSFET switch for step-up regulation from an input voltage of 4.5 V to 40 V and a pin adjusta

文件：167.47 Kbytes 頁(yè)數(shù)：6 Pages

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Four-String, White LED Driver for LCD Backlight Applications

GENERAL DESCRIPTION The ADD5211 is a 4 channel, white LED driver for backlight applications based on high efficiency, current mode, step-up converter technology. The boost controller drives an external MOSFET switch for step-up regulation from an input voltage of 4.5 V to 40 V and a pin adjusta

文件：167.47 Kbytes 頁(yè)數(shù)：6 Pages

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Package：24-WFQFN 裸露焊盤，CSP；包裝：卷帶（TR） 類別：集成電路（IC） LED 驅(qū)動(dòng)器 描述：IC LED DRVR CTRLR PWM 24LFCSP

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包裝：盒 類別：開發(fā)板，套件，編程器 評(píng)估板 - LED 驅(qū)動(dòng)器 描述：EVAL BOARD WHITE LED DRV ADD5211

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包裝：盒 類別：開發(fā)板，套件，編程器 評(píng)估板 - LED 驅(qū)動(dòng)器 描述：EVAL BOARD LED DRIVER ADD5211

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