LED驱动器LM2759SDX ：
LM2759SDX 是一种集成的低噪声、大电流开关电容DC/DC变换器.该装置只需4个小型陶瓷电容器，使总溶解面积小于22 mm2，高度小于1mm。LM 2759能够从单电池锂离子电池中驱动多达1A的负载.在输入电压范围内，通过根据LED的正向电压和电流要求积极选择合适的增益，可以获得的效率。
LM2759SDX 的关键特征：
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多1A输出电流
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溶解面积<22 mm2
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不需要电感
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90%峰值效率
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获得效率的自适应1x、1.5x和2x增益
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停机时负载断开
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增益过渡过程中的输入电流控制
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闪存超时
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TX输入针保证与射频功率放大器脉冲同步
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火炬、闪光灯和指示模式
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外部闪存通过Strobe输入针启用
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通过I2C禁用选通输入
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可编程闪存脉冲持续时间，以及通过I2C兼容接口的火炬和闪光电流
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1 MHz恒频工作
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低剖面12-Pin WSON(3mm x3mm x0.8mm)
LM2759SDX
LM2759 is an integrated low-noise, high-current switched capacitor DC/DC converter with a regulated current source. The device requires only four small ceramic capacitors making the total solution area less than 22 mm2 and the height less than 1 mm. The LM2759 is capable of driving loads up to 1A from a single-cell Li-Ion battery. Maximum efficiency is achieved over the input voltage range by actively selecting the proper gain based on the LED forward voltage and current requirements.
Key Features
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Up to 1A Output Current
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Solution Area < 22 mm2
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No Inductor Required
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90% Peak Efficiency
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Adaptive 1x, 1.5x and 2x Gains for Maximum Efficiency
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Load Disconnect in Shutdown
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Accurate Input Current Control During Gain Transitions
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Flash Time-Out
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TX Input Pin Ensures Synchronization with RF Power Amplifier Pulse
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Torch, Flash, and Indicator Modes
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External Flash Enable via Strobe Input Pin
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Strobe Input Disable via I2C
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Programmable Flash Pulse Duration, and Torch and Flash Currents via I2C-Compatible Interface
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1MHz Constant Frequency Operation
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Low Profile 12–Pin WSON (3mm x 3mm x 0.8mm)
