MP3393数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The MP3393 is a step-up controller with 8 current channel sources designed to power WLED backlights for large LCD panels.?The MP3393 uses current-mode fixed-frequency architecture. It drives an external MOSFET to boost the output voltage. The switching frequency is programmable by an external setting resistor.?The MP3393 integrates a constant-current control circuit to regulate the current in each LED string to the value set by an external current feedback resistor. Current matching can achieve 1.2% regulation accuracy between strings. Its low 202mV regulation voltage reduces power loss and improves efficiency.?The MP3393 includes protections including under-voltage lockout, LED open/short protection, and thermal shutdown. The fault flag pin indicates the statuses of all fault signals.?The MP3393 can be daisy-chained to expand the number of LED channels. It is available in TSSOP28EP and SOIC28 packages.

特性 Features

● 9V-to-32V Input Voltage Range
● Drives 8 Channels of LED strings
● Internal Constant-Current Control
● Maximum 350mA for Each String
● 1.2% Current Matching Accuracy Between Strings
● Programmable Switching Frequency
● Analog Dimming and External PWM Dimming
● Open and Short LED Protection
● Programmable Over-Voltage Protection
● Fault Output Flag
● Thermal Shutdown
● Extendable LED Channels that Share One Power Stage Set
● TSSOP28EP and SOIC28 Packages

简介

MP3393属于集成电路（IC）的LED驱动器。由制造生产的MP3393LED 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。