ZMDI ZLED7330电源效率98%低成本LED驱动方案
ZMDI公司的ZLED7330 LED驱动器的电源效率达到98%,主要为高亮和大电流LED而设计. ZLED7330具有三种模式来决定输出电平,输出电流高达1.2A,内部集成了40V功率开关,DC输入电压从8.5V到40V,输出电流精度5%,LED开路保护和热关断保护.本文介绍了ZLED7330主要特性和优势,以及几种基本应用电路.
The ZLED7330 continuous-mode inductive step-down converter family is one of our ZLED LED control ICs. It is designed for applications requiring high brightness and high current. The ZLED7330 can efficiently drive a single LED or multiple series-connected LEDs from a voltage input higher than the LED forward voltage (Vin = 8.5 to 40VDC). It provides an adjustable output current (1.0A maximum), which is set via an external resistor and controlled by the ZLED7X30’s integrated high-side output current-sensing circuit and high speed internal 40V power switch. Its low conducting impedance ensures high system efficiency.
The ZLED7330 provides a switch dimming function. It detects external switch action to adjust output current, allowing dimming functionality to be achieved without changing the original lighting system circuitry.
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