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

文件：266.72 Kbytes 页数：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 页数：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 页数：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 页数：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 页数：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 页数：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 页数：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 页数：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 页数：15 Pages

Maxim

美信

1倍/1.5倍/2倍、白光LED电荷泵，带有两路LDO，4mm x 4mm TQFN封装

MAX8631X/Y电荷泵能以恒定电流驱动多达8个白色LED，获得均匀的亮度。能以高达30mA的电流驱动每个主屏LED (M1–M4)，用于背光。闪光灯LED (F1–F4)是单独控制的，并能以高达100mA的电流驱动每个LED (或总电流为400mA)。两个片上200mA LDO可为照相机各模块供电。两个LDO的输出电压引脚可编程，以满足不同照相机模块的要求。利用自适应1倍/1.5倍/2倍电荷泵模式和超低压差电流调节器，MAX8631X/Y能够在单节锂电池的整个有效电压范围内实现高效率。1MHz固定开关频率允许采用微型的外部元件，经过优化的调节方案可确保低EMI和低输入纹波。\nMAX863 ·驱动多达8个LED \n·30mA/LED的驱动电流，用于背光 \n·400mA的总驱动电流，用于闪光灯 \n·两个内置低噪声200mA LDO\n·在Li+电池有效供电电压范围内，保持94%的最大效率/85%的平均效率(PLED/PBATT) \n·0.2% (典型值) LED电流匹配度 \n·自适应的1倍/1.5倍/2倍模式切换 \n·单线、串行脉冲接口用于亮度控制(32级)\n·2位逻辑(3电平) \n·过热TA降额保护功能\n·低输入纹波和低EMI \n·2.7V至5.5V电源电压范围 \n·软启动、过压以及热关断保护 \n·28引脚、薄型QFN、4mm x ;

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