مدار مجتمع (آی سی) آی‌سی مدیریت توان (پی‌ام‌آی‌سی) آی‌سی درایور ال‌ای‌دی

Product Attributes

Introduction

MT7844D is a high power factor, non-isolated LED driver IC. It achieves full-cycle sensing through a floating ground, high-side sensing, buck switching power supply architecture. With an internally integrated high-voltage supply circuit, MT7844D eliminates the need for startup resistors and supply diodes, reducing BOM cost. MT7844D operates in quasi-resonant mode, improving both efficiency and EMI performance. MT7844D integrates multiple protection features, including OVP, OCP, over-temperature compensation, and more, enhancing reliability — all protections feature auto-recovery. A built-in 550V high-voltage MOSFET simplifies the peripheral circuitry.

Features

• Single-stage power factor correction (PF > 0.9)
• High-voltage supply, no startup or auxiliary supply circuit required
• High-accuracy LED output current (±3%)
• Excellent line and load regulation (±2%)
• Quasi-resonant operation mode
• Multiple protection features
• DIP7 package

Applications

• E14/E27/PAR30/PAR38/GU10 luminaires
• T8/T10 LED tubes
• Other LED driver applications