MP1519数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The MP1519 is a fully automatic driver for powering four white LEDs, with up to 4V forward voltage, from a single Li-Ion or three NiMH cells. The driver performs all of the sensing and control to run the LEDs at an optimum charge pump ratio for efficiency without an expensive inductor. The driver allows PWM operation to support brightness control. The tiny 3mm x 3mm QFN16 package and small external capacitors allow for the most compact white LED solution available.

特性 Features

● 2% LED Current Matching
● High Efficiency (>93%)
● Current Source Outputs
● No Ballast Resistors Required
● 1x, 1.5x and 2x Automatic Modes
● Constant Frequency Operation
● Automatic LED Detection
● High and Low Frequency PWM Capability
● 2.5V to 5.5V Operation
● Less than 1? Leakage during Shutdown
● Detects Changes in Battery Level
● No External Schottky Diode Required
● Soft-Start and Soft Switching Operation

简介

MP1519属于集成电路（IC）的LED驱动器。由制造生产的MP1519LED 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。