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裕鼎祥科技让电源设计更便捷可靠|联系电话：13928434054 |
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裕鼎祥科技让电源设计更便捷可靠|联系电话：13928434054 |
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MP1528特性
MP1528驱动多达9系列白光LED
MP1528集成0.63Ω功率MOSFET
MP1528低0.4V满度电流检测阈值
MP1528超过20mA输出电流容量
MP1528模拟和数字PWM亮度控制
MP1528开路负载关机
MP1528软启动
MP1528内部电流限制
MP1528欠压锁定
MP1528热关机
MP1528采用8引脚MSOP封装和3 × 3mm 和6引脚QFN封装
The MP1528 is a step up converter designed for driving up to nine (9) series White LEDs (LED) from a single cell Lithium-Ion battery. It regulates the LED current and includes an analog input for varying the LED brightness. The MP1528 uses current limited, variable frequency architecture to regulate the LED current while maintaining high efficiency. The BIAS pin measures the output voltage and turns off the converter if an over voltage condition is present to prevent damage due to an open circuit condition. The LED current is measured with an external current sense resistor. The low 0.4V full-scale regulation threshold and 0.63Ω power switch minimize power loss. The MP1528 is available in an 8 pin MSOP and a tiny 6 pin 3mm x 3mm QFN packages.
