MP4012数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The MP4012 is a current mode controller designed for driving the high brightness Light Emitting Diodes (LEDs) from extremely wide input voltage 8V-55V. It can be used in Boost, Buck, Buck-boost and SEPIC topologies.?The MP4012 drives external MOSFET with fixed frequency/constant off-time architecture to regulate the LED current, which is measured through an external current sense resistor. Its feedback voltage can be adjusted by the external DC bias voltage. The MP4012 can work in constant frequency operation mode or constant off time mode. It features programmable slop compensation that can optimize the control loop regulation and avoid sub harmonic oscillation.?The MP4012 implements high frequency PWM Dimming with external disconnect MOSFET. It achieves analog dimming by adjusting the feedback voltage. The MP4012 has synchronizing function, which makes multiple ICs synchronized to each other by connecting SYNC pins together.?The MP4012 includes under-voltage lockout, over voltage protection, open and short hiccup mode protection, overload protection and thermal protection to prevent damage in the case of fault condition.?The MP4012 is available in a 16-pin SOIC package.

特性 Features

● Constant-current WLED Driver
● 8V-55V Input Voltage
● Constant Frequency Mode Or Constant Off Time Mode
● Programmable Switching Frequency or Off-Time
● Leading Edge Blanking for Current Sense
● High Frequency PWM Dimming and Analog Dimming
● Output-to-Input Disconnect in Shutdown Mode
● Synchronization Function
● Programmable Over Voltage Protection
● Open Load Hiccup Mode Protection
● Short Load Hiccup Mode Protection
● Programmable Current Limit
● UVLO, Thermal Shutdown
● Soft Start
● Available in 16-pin SOIC package

简介

MP4012属于集成电路（IC）的LED驱动器。由制造生产的MP4012LED 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。