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发布者:来自网络 发布时间:2020/7/24 阅读:467次    关键字: led
FP7122-Average-Mode Constant Current LED Driver


FP7122-LED Driver with Average-Mode Constant Current Control DataSheet

FP7122应用说明  Application Note

General Description
    The FP7122 is an average current mode control LED driver IC operating in a constant off-time mode. FP7122 does not produce a peak-to-average error, and therefore greatly improves accuracy, line and load regulation of the LED current without any need for loop compensation or high-side current sensing. The output LED current accuracy is ±3%.
    The FP7122 can be powered from an 8.0 - 100V supply. A PWM & linear dimming input is provided that accepts an external control TTL compatible signal. The output current can be programmed by an internal 250mV reference. or controlled externally through a 0.2 – 1.5V dimming input.

Features
 Fast Average Current Control
 Internal 8 to 100V Linear Regulator
 Linear and PWM Dimming Capability
 Output Short Circuit Protection with Skip Mode
 Requires Few External Components for Operation
 Internal 100V/6A N-MOSFET

Applications
 DC/DC or AC/DC LED Driver Applications
 Back Lighting of Flat Panel Displays
 General Purpose Constant Current Source
 Signage and Decorative LED Lighting
 Chargers

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