MP3214数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The MP3214 is a low noise, high current charge pump designed to drive LEDs at up to 500mA with an input supply of 2.7 to 5.5 volts. The high efficiency and low external parts count (two small bypass caps, two small charge pump caps, and one programming resistor) make the MP3214 ideally suited for portable applications where small size and high efficiency are critical. The MP3214 controls the inrush current via a soft start algorithm. High frequency switching of the charge pump capacitors allows for very small capacitance values. The output current is set by an external resistor, RSET. The brightness of the LED can be modulated by a PWM on the enable pin. The MP3214 automatically adjusts the switching mode of the charge pump for optimal efficiency. The MP3214 is available in a 16 pin 3x3 QFN package.

特性 Features

•High Efficiency
•Up to 500mA Output Current
•Wide Supply Range of 2.7V to 5.5 V
•Small Solution Size
•Soft Start
•Low Shutdown Current
•Open/Short Led Protection
•No Inductors
•Programmable Output Current
•PWM Brightness Control

简介

MP3214属于集成电路（IC）的LED驱动器。由制造生产的MP3214LED 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。