MP1529数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The MP1529 is a step-up converter for driving two 6?ED backlight strings to 30mA and a 4?ED flash string to 150mA from a single Lithium-Ion battery. The step-up converter generates an output voltage as high as 25V from a 2.7V to 5.5V input source. Three current sources drive in three modes. In backlight mode two strings of 6 LEDs are lit with up to 30mA of current. In the backlight plus preview mode the 4 flash LEDs are lit with the preview current. In flash mode the flash LEDs are lit with up to 150mA of current and the two backlight strings are turned off. There are three pins to independently set the backlight, preview and flash current. The MP1529 includes built-in open lamp over voltage protection, cycle-by-cycle current limit, over temperature shutdown, input under voltage control and integrated soft-start. The MP1529 is available in a tiny 16-pin 4mm x 4mm package.

特性 Features

● 2.7V to 5.5V Input Voltage Range
● 25V Maximum Step-Up Voltage
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简介

MP1529属于集成电路（IC）的LED驱动器。由制造生产的MP1529LED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。