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白光驱动一般有两种:
串连: 外加电感, 亮度一至, 效率高,EMI大.
并联:外加升压电容,亮度一至性差, 效率低,EMI性能好.
一般手机现在用并联
Richtek RT9363 是并联的白光驱动
16级脉冲调光, TSOT-23-8的封装
【文件名】:06116@52RD_DS9363-06C.pdf
【格 式】:pdf
【大 小】:177K
【简 介】:
【目 录】:Smallest 60mA 3-Channel Charge Pump White LED Driver
with Low Dropout Current Source
Pin Configurations
Features
􀁺 Very High Efficiency Over 80% of Battery Life
􀁺 Support up to 3 White LEDs
􀁺 Support up to 60mA Output Current
􀁺 5% Typical LED Current Matching
􀁺 Soft Start Function
􀁺 Short Circuit Protection Function
􀁺 Auto Charge Pump Mode Selection
􀁺 1MHz Fixed Frequency Oscillator
􀁺 Output Over Voltage Protection
􀁺 16-Step Brightness Control
􀁺 Low Input Noise and EMI
􀁺 RoHS Compliant and 100% Lead (Pb)-Free
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