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MAX1748

Triple-Output TFT LCD DC-DC Converter

GeneralDescription TheMAX1748/MAX8726triple-outputDC-DCconvertersinalow-profileTSSOPpackageprovidetheregulatedvoltagesrequiredbyactive-matrix,thin-filmtransistor(TFT)liquid-crystaldisplays(LCDs).Onehigh-powerDC-DCconverterandtwolow-powerchargepumpsconvertthe+3.3

MAX1748

三輸出TFT-LCD DC-DC轉(zhuǎn)換器; ? 三路集成DC-DC轉(zhuǎn)換器\n? 1MHz電流模式PWM boost穩(wěn)壓器\n? 高達+13V大功率主輸出\n? ±1%精度\n? 高效率(93%)\n\n\n? 雙電荷泵輸出\n? 高達+40V正電荷泵輸出\n? 低達-40V負電荷泵輸出\n\n\n? 內(nèi)部供電順序\n? 內(nèi)部功率MOSFET\n? +2.7V至+5.5V輸入電源\n? 0.1μA關(guān)斷電流\n? 0.6mA靜態(tài)電流\n? 內(nèi)部軟啟動\n? 電源就緒輸出\n? 超小型外部元件\n? 薄型TSSOP封裝(最高1.1mm);

MAX1748/MAX8726是小外形TSSOP封裝的三輸出DC-DC轉(zhuǎn)換器，提供有源矩陣薄膜晶體管(TFT)液晶顯示器(LCD)所需的穩(wěn)定電壓。一個大功率DC-DC轉(zhuǎn)換器和2個小功率電荷泵將+3.3V至+5V輸入電壓轉(zhuǎn)換為3個獨立的輸出電壓。\n\n 1MHz主DC-DC轉(zhuǎn)換器使用極小的電感和陶瓷電容，產(chǎn)生高達13V的升壓輸出電壓(VMAIN)。低功耗BiCMOS控制電路和低導(dǎo)通電阻(0.35Ω)集成功率MOSFET可使效率高達93%。\n\n 兩個電荷泵獨立的產(chǎn)生一個正輸出(VPOS)和一個負輸出(VNEG)。這些小功率輸出使用外部級聯(lián)二極管和電容(根據(jù)需要選擇級數(shù))產(chǎn)生高達+40V和低至-40V的穩(wěn)壓輸出。獨有的穩(wěn)壓方式極大的降低了輸出紋波，同時也減小了兩個電荷泵的電容尺寸。\n\n 對于MAX1748和MAX8726兩種器件，供電順序為(VMAIN)首先上電，然后(VNEG)上電，最后(VPOS)上電。MAX1748在前一路電源完成后迅速軟啟動下一路電源。MAX8726在(VMAIN)和(VNEG)以及(VNEG)和(VPOS)之間加入了一段延時。\n\n MAX1748/MAX8726提供超薄TSSOP封裝(1.1mm最大高度)。\n\n \n\n

MAX17480

AMD 2-/3-Output Mobile Serial VID Controller

GeneralDescription TheMAX17480isatriple-output,step-down,fixedfrequencycontrollerforAMD’sserialVIDinterface(SVI)CPUandnorthbridge(NB)coresupplies.TheMAX17480consistsoftwohigh-currentSMPSsfortheCPUcoresandone4AinternalswitchSMPSfortheNBcore.ThetwoCPUco

MAX17480GTL+

AMD 2-/3-Output Mobile Serial VID Controller

GeneralDescription TheMAX17480isatriple-output,step-down,fixedfrequencycontrollerforAMD’sserialVIDinterface(SVI)CPUandnorthbridge(NB)coresupplies.TheMAX17480consistsoftwohigh-currentSMPSsfortheCPUcoresandone4AinternalswitchSMPSfortheNBcore.ThetwoCPUco

MAX17482

Dual-Phase, Quick-PWM Controllers for IMVP-6/IMVP-6.5 CPU Core Power Supplies

GeneralDescription TheMAX17021/MAX17082/MAX17482are2/1-phaseinterleavedQuick-PWM?step-downVIDpower-supplycontrollersfornotebookCPUs.Trueout-of-phaseoperationreducesinputripplecurrentrequirementsandoutput-voltageripple,whileeasingcomponentselectionandlayoutdifficult

MAX17482

雙相、Quick-PWM控制器，用于Intel IMVP6+/6.5 CPU; ? 單相/雙相Quick-PWM控制器 \n? MAX17021支持IMVP-6+ (Montevina) \n? MAX17082/MAX17482支持IMVP-6.5 (Calpella) \n? 在整個輸入電壓、負載、工作溫度范圍內(nèi)保持±0.5%的VOUT精度 \n? 7位0至1.50V VID控制 \n? 動態(tài)相位選擇有助于優(yōu)化工作/休眠模式下的效率 \n? 瞬態(tài)相位重疊允許減小輸出電容 \n? 內(nèi)置自舉開關(guān) \n? 增益可調(diào)的有源電壓定位技術(shù) \n? 200kHz至800kHz可編程開關(guān)頻率 \n? 精確的電流平衡和限流 \n? 可調(diào)節(jié)的輸出擺率控制 \n? 電源就緒、時鐘使能以及熱故障輸出 \n? 相位電流不平衡故障輸出 \n? 驅(qū)動大功率同步整流MOSFET \n? 4V至26V電池輸入電壓范圍 \n? 輸出欠壓和熱故障保護 \n? 輸出過壓保護(MAX17021/MAX17082) \n? 軟啟動和軟關(guān)斷;

MAX17021/MAX17082/MAX17482為兩相/單相、交錯控制Quick-PWM?降壓型VID電源控制器，用于筆記本電腦的CPU供電。真正的錯相工作架構(gòu)降低了對輸入紋波電流的要求和輸出電壓紋波，同時簡化了元件選擇和電路板布局。Quick-PWM控制技術(shù)能夠瞬時響應(yīng)負載電流的快速階躍變化。有源電壓定位降低了功耗以及對大容量輸出電容的要求，并可對鉭電容、聚合物電容或陶瓷電容等大容量輸出電容進行理想的電壓定位補償。\n擺率控制器能夠?qū)崿F(xiàn)VID碼之間的受控轉(zhuǎn)換、受控的軟啟動和軟關(guān)斷以及受控地退出掛起狀態(tài)?；跓崦綦娮璧臏囟葌鞲衅魈峁┛删幊痰臒峁收蠄缶敵?/VRHOT)。電流監(jiān)測輸出(IMON)提供與CPU功耗成比例的模擬輸出電流(MAX17082/MAX17482)。當檢測到任意輸出欠壓、過壓(MAX17021/MAX17082)或熱故障時，將關(guān)斷控制器。電壓調(diào)節(jié)器電源就緒(PWRGD)輸出用于指示輸出電壓是否處于穩(wěn)壓范圍。另外，MAX17021/MAX17082/MAX17482具有真差分電流檢測和相位就緒(PHASEGD)輸出，指示相位不平衡故障。\nMAX17021滿足IMVP-6+規(guī)范，MAX17082/MAX17482符合IMVP-6.5的要求。MAX17021/MAX17082/MAX17482采用5mm x 5mm、40引腳TQFN封裝。

MAX17482GTL+

Dual-Phase, Quick-PWM Controllers for IMVP-6/IMVP-6.5 CPU Core Power Supplies

GeneralDescription TheMAX17021/MAX17082/MAX17482are2/1-phaseinterleavedQuick-PWM?step-downVIDpower-supplycontrollersfornotebookCPUs.Trueout-of-phaseoperationreducesinputripplecurrentrequirementsandoutput-voltageripple,whileeasingcomponentselectionandlayoutdifficult

MAX1748EUE

Triple-Output TFT LCD DC-DC Converter

GeneralDescription TheMAX1748/MAX8726triple-outputDC-DCconvertersinalow-profileTSSOPpackageprovidetheregulatedvoltagesrequiredbyactive-matrix,thin-filmtransistor(TFT)liquid-crystaldisplays(LCDs).Onehigh-powerDC-DCconverterandtwolow-powerchargepumpsconvertthe+3.3

MAX1748EUE

Triple-Output TFT-LCD DC-DC Converters

GeneralDescription TheMAX1748/MAX8726triple-outputDC-DCconvertersinalow-profileTSSOPpackageprovidetheregulatedvoltagesrequiredbyactive-matrix,thin-filmtransistor(TFT)liquid-crystaldisplays(LCDs).Onehigh-powerDC-DCconverterandtwolow-powerchargepumpsconvertthe+3.3

MAX1748-MAX8726

Triple-Output TFT-LCD DC-DC Converters

GeneralDescription TheMAX1748/MAX8726triple-outputDC-DCconvertersinalow-profileTSSOPpackageprovidetheregulatedvoltagesrequiredbyactive-matrix,thin-filmtransistor(TFT)liquid-crystaldisplays(LCDs).Onehigh-powerDC-DCconverterandtwolow-powerchargepumpsconvertthe+3.3