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OnSemi NCL30160恒流高亮LED驱动解决方案

2012-06-13 10:47
夜隼008
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  On Semi公司的NCL30160是恒流高亮LED驱动器,集成了1.0A MOSFET,输入电压从6.3V到40V,开关频率高达1.4MHz,其滞后控制在负载瞬变和PWM调光时具有良好的电源抑制和快速反应,不需要控制回路补偿,可调整LED电流,主要用在LED驱动器,恒流源,汽车照明,通用照明和工业照明。本文介绍了NCL30160主要特性,方框图,应用电路以及评估板NCL30160GEVB主要特性,电路图,材料清单和评估板NCL30160GEVB测试程序。

  NCL30160GEVB:Up to 40V, 1A NCL30160 LED Driver Buck Evaluation Board 1.0A Constant-Current Buck Regulator for Driving High Power LEDs

  The NCL30160 is an NFET hysteretic step?down, constant?current driver for high power LEDs. Ideal for automotive, industrial and general lighting applications utilizing minimal external components.

  The NCL30160 operates with an input voltage range from 6.3 V to 40 V. The hysteretic control gives good power supply rejection and fast response during load transients and PWM dimming to LED arrays of varying number and type. A dedicated PWM input (DIM/EN) enables wide range of pulsed dimming and a high switching frequency up to 1.4 MHz allows the use of smaller external components minimizing space and cost. Protection features include resistor-programmed constant LED current,shorted LED protection, under-voltage and thermal shutdown. The NCL30160 is available in a SOIC-8 package.

  NCL30160主要特性:

  •Integrated 1.0A MOSFET

  •VIN Range 6.3 V to 40 V

  •Short LED Shutdown Protection

  •Up to 1.4 MHz Switching Frequency

  •No Control Loop Compensation Required

  •Adjustable LED Current

  •Single Pin Brightness and Enable/Disable Control Using PWM

  •Supports All-Ceramic Output Capacitors and Capacitor?less Outputs

  •Thermal Shutdown Protection

  •Capable of 100% Duty Cycle Operation

  •This is a Pb-Free Device

  NCL30160典型应用:

  •LED Driver

  •Constant Current Source

  •Automotive Lighting

  •General Illumination

  •Industrial Lighting

NCL30160简化框图

NCL30160驱动一个LED的应用电路图(降压)

  NCL30160GEVB:高达40V, 1A 的NCL30160 LED驱动器降压评估板

  NCL30160GEVB主要特性:

  Integrated MOSFET capable of 1.0 A

  Input voltage range from 6.3 V to 40 V

  Dimming capability using PWM

  LED short protection

  Thermal shutdown protection

评估板NCL30160GEVB外形图

评估板NCL30160GEVB电路图

评估板NCL30160GEVB测试程序图

所需设备

声明: 本文由入驻维科号的作者撰写,观点仅代表作者本人,不代表OFweek立场。如有侵权或其他问题,请联系举报。

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