1x/1.5x/2x White LED Charge Pump with Two LDOs in 4mm x 4mm Thin QFN

文件：266.72 Kbytes 頁數(shù)：15 Pages

MAXIM

美信

1x/1.5x/2x White LED Charge Pump with Two LDOs in 4mm x 4mm Thin QFN

General Description The MAX8631X/Y charge pump drives up to eight white LEDs with regulated constant current for uniform intensity. The main group of LEDs (M1–M4) can be driven up to 30mA per LED for backlighting. The flash group of LEDs (F1–F4) is independently controlled and can be driven up to

文件：399.16 Kbytes 頁數(shù)：16 Pages

MAXIM

美信

1x/1.5x/2x White LED Charge Pump with Two LDOs in 4mm x 4mm Thin QFN

General Description The MAX8631X/Y charge pump drives up to eight white LEDs with regulated constant current for uniform intensity. The main group of LEDs (M1–M4) can be driven up to 30mA per LED for backlighting. The flash group of LEDs (F1–F4) is independently controlled and can be driven up to

文件：399.16 Kbytes 頁數(shù)：16 Pages

MAXIM

美信

1x/1.5x/2x White LED Charge Pump with Two LDOs in 4mm x 4mm Thin QFN

General Description The MAX8631X/Y charge pump drives up to eight white LEDs with regulated constant current for uniform intensity. The main group of LEDs (M1–M4) can be driven up to 30mA per LED for backlighting. The flash group of LEDs (F1–F4) is independently controlled and can be driven up to

文件：399.16 Kbytes 頁數(shù)：16 Pages

MAXIM

美信

1x/1.5x/2x White LED Charge Pump with Two LDOs in 4mm x 4mm Thin QFN

文件：266.72 Kbytes 頁數(shù)：15 Pages

MAXIM

美信

1x/1.5x/2x White LED Charge Pump with Two LDOs in 4mm x 4mm Thin QFN

文件：266.72 Kbytes 頁數(shù)：15 Pages

MAXIM

美信

1x/1.5x/2x White LED Charge Pump with Two LDOs in 4mm x 4mm Thin QFN

文件：266.72 Kbytes 頁數(shù)：15 Pages

MAXIM

美信

1x/1.5x/2x White LED Charge Pump with Two LDOs in 4mm x 4mm Thin QFN

文件：266.72 Kbytes 頁數(shù)：15 Pages

MAXIM

美信

1x/1.5x/2x White LED Charge Pump with Two LDOs in 4mm x 4mm Thin QFN

文件：266.72 Kbytes 頁數(shù)：15 Pages

MAXIM

美信

1倍/1.5倍/2倍、白光LED電荷泵，帶有兩路LDO，4mm x 4mm TQFN封裝

MAX8631X/Y電荷泵能以恒定電流驅(qū)動多達(dá)8個白色LED，獲得均勻的亮度。能以高達(dá)30mA的電流驅(qū)動每個主屏LED (M1–M4)，用于背光。閃光燈LED (F1–F4)是單獨(dú)控制的，并能以高達(dá)100mA的電流驅(qū)動每個LED (或總電流為400mA)。兩個片上200mA LDO可為照相機(jī)各模塊供電。兩個LDO的輸出電壓引腳可編程，以滿足不同照相機(jī)模塊的要求。利用自適應(yīng)1倍/1.5倍/2倍電荷泵模式和超低壓差電流調(diào)節(jié)器，MAX8631X/Y能夠在單節(jié)鋰電池的整個有效電壓范圍內(nèi)實(shí)現(xiàn)高效率。1MHz固定開關(guān)頻率允許采用微型的外部元件，經(jīng)過優(yōu)化的調(diào)節(jié)方案可確保低EMI和低輸入紋波。\nMAX863 ·驅(qū)動多達(dá)8個LED \n·30mA/LED的驅(qū)動電流，用于背光 \n·400mA的總驅(qū)動電流，用于閃光燈 \n·兩個內(nèi)置低噪聲200mA LDO\n·在Li+電池有效供電電壓范圍內(nèi)，保持94%的最大效率/85%的平均效率(PLED/PBATT) \n·0.2% (典型值) LED電流匹配度 \n·自適應(yīng)的1倍/1.5倍/2倍模式切換 \n·單線、串行脈沖接口用于亮度控制(32級)\n·2位邏輯(3電平) \n·過熱TA降額保護(hù)功能\n·低輸入紋波和低EMI \n·2.7V至5.5V電源電壓范圍 \n·軟啟動、過壓以及熱關(guān)斷保護(hù) \n·28引腳、薄型QFN、4mm x ;

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