IRS25411SPBF数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The IRS25411S is a high voltage, high frequency buck control ic for constant LED current regulation. The IRS25411S incorporates a continuous mode time-delayed hysteretic buck regulator to directly control the average load current, using an accurate on-chip bandgap voltage reference. The application is inherently protected against short circuit conditions, with the ability to easily add open-circuit protection. An internal high-side bootstrap circuit drives the buck switching element at high frequencies. A low-side driver is also provided for sychronous rectifier designs. All functions are relaized with a simple 8-pin SOIC package.

特性 Features

• 600V Half-Bridge Driver \r
• Micropower Start-Up (<500 microamperes)\r
• +/-2% voltage reference\r
• 140 ns deadtime\r
• 15.6 V zener clamp on Vcc\r
• Frequency up to 500 kHz\r
• Auto restart, non-latched shutdown\r
• PWM dimmable\r
• 8-pin SOIC Package

应用 Application

• LED drivers for lamp replacement\r
• LED driver back end current regulator

简介

IRS25411SPBF属于集成电路（IC）的LED驱动器。由制造生产的IRS25411SPBFLED 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。