NXP SSL3250A照相闪光双LED驱动方案
NXP公司的 SSL3250A是照相闪光灯LED驱动器,设计用于以电池为能源的移动设备如手机和PDA等.它的升压转换器能为高亮度LED提供高达500mA的电流,效率超过85%.输入电压2.7V到5.5V,输出电压高达9.5V,开关频率1.2MHz, I2C总线可编程到400 kHz.本文介绍SSL3250A主要特性,方框图以及典型应用定路,包括仅采用I2C接口的应用电路图, 采用I2C接口和TX-Masking的应用电路图以及采用直接控制的应用电路图,建议采用的元件和SSL3250A HVQFN20的典型PCB设计图.
SSL3250A: Photo flash dual LED driver
The SSL3250A is a photo flash LED driver designed for battery operated mobile devices such as mobile phones and PDAs. The boost converter delivers high performance and drives a single or dual, high brightness LED at up to 500 mA with over 85 % efficiency. The driver can be programmed to operate in Flash, Torch or Indicator / Video-on mode.
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