MP4008数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The MP4008 is a current-mode controller designed for driving high brightness light emitting diodes (LEDs) with a wide input voltage from 9V to 28V. It can be used in boost and SEPIC topologies.
The MP4008 drives an external MOSFET with a fixed frequency architecture to regulate the LED current, which is measured through an external current-sense resistor. The LED current feedback voltage is 280mV. The switching frequency is fixed to 180kHz. The cycle-by-cycle current limit can be programmed by the sense resistor on CS.
The MP4008 employs fast PWM dimming to the LED current with a high dimming ratio.
Integrated protection features include under-voltage lockout, over-voltage protection, over-current protection, short LED protection, short output protection, short inductor/diode protection, and OTP.
The MP4008 is available in a SOIC-8 package.

特性 Features

●Constant Current WLED Driver
●280mV Feedback Voltage with ?.8% Accuracy
●9V to 28V Input Voltage
●Leading Edge Blanking for Current Sense
●Frequency Fixed to 180kHz
●Fast PWM Dimming
●Soft Start
●Over-Voltage Protection
●Short LED Protection
●Short Output Protection
●Over-Current Protection
●Short Inductor/Diode Protection
●VIN UVLO
●Thermal Shutdown
●Available in a SOIC-8 Package

简介

MP4008属于集成电路（IC）的LED驱动器。由制造生产的MP4008LED 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。