MP3384数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The MP3384 is a step-up converter with 4-channel current sources designed for driving the white LED arrays for large size LCD panel backlighting applications. The MP3384 uses current mode, fixed frequency architecture. The switching frequency can be selected at 1.25MHz or 625kHz. It generates an output voltage up to 50V from a 4.5V to 25V input supply. The MP3384 independently regulates the current in each LED string to the user programmed value set by an external current setting resistor. The MP3384 applies 4 internal current sources to achieve a current balance of 2.5% regulation accuracy between strings. Its low 600mV regulation voltage on LED current sources reduces power loss and improves efficiency. The MP3384 includes under voltage lockout, current limiting, over voltage, short LED, open LED and thermal shut-down protection. The MP3384 is available in small QFN16 (3mmx 3mm) package.

特性 Features

● High Efficiency and Small Size
● 4.5V to 25V Input Voltage Range
● 50V Maximum Step-up Voltage
● Balanced Driver for 4 Strings of WLED
● 2.5% Current Matching Accuracy Between Strings
● Selectable Switching Frequency: 1.25MHz or 625kHz
● PWM DimmingProgrammable Over-voltage Protection
● Under Voltage Lockout
● Open and Short LED Protection
● Thermal Shutdown
● Small 16-pin QFN (3mm x 3mm)

简介

MP3384属于集成电路（IC）的LED驱动器。由制造生产的MP3384LED 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。