PWM/Analog dimmable Non-isolated Constant Current LED Driver

DESCRIPTION MT7815B is a high precision LED constant current controller operating at critical conduction mode (CRM) with zero current switched-on and peak current switched-off. It’s mainly targeted for non-isolated buck LED power systems and PWM/Analog dimmable application. Critical conduct

文件：332.23 Kbytes 页数：2 Pages

MAXIC

美芯晟

非隔离AC-DC

MT7815B是一款工作于零电流导通，峰值电流关断的临界导通模式（CRM，Critical Conduction Mode）高精度LED恒流驱动芯片，主要应用于非隔离降压型LED电源系统，并支持PWM/模拟电平调光。临界导通模式确保了MT7815B可以控制功率开关在电感电流为零时刻开启，减小了开关管的开关损耗，确保了系统具有93%以上的峰值效率。电感电流谷值为零的临界导通模式结合经过输入母线电压补偿后的峰值电感电流，确保了MT7815B输出LED电流的高精度，并且具有优异的线性调整率和负载调整率，可以使用工字电感，并对电感量变化不敏感。MT7815B工作电压宽，适合全范围交流输入电压或

Maxic

美芯晟

PWM/Analog dimmable Non-isolated Constant Current LED Driver

文件：286.35 Kbytes 页数：1 Pages

MAXIC

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1.0 A Positive Voltage Regulators

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安森美半导体