OnSemiNCL30160恒流高亮LED驱动解决方案
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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
图1.NCL30160简化框图
图2.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
图3.评估板NCL30160GEVB外形图
图4.评估板NCL30160GEVB电路图
评估板NCL30160GEVB材料清单:
图5.评估板NCL30160GEVB测试程序图
所需要设备:
详情请见:
http://www.onsemi.cn/pub_link/Collateral/NCL30160-D.PDF
和
http://www.onsemi.cn/pub_link/Collateral/NCL30160GEVB_SCHEMATIC.PDF
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