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NU508

更新时间： 2024-11-15 07:07:55
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其他 - ETC /
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描述
NU508 - High Power Constant Current LED Driver 產品特色 3V~12V 寬廣電源設計，電源取電容易。 8輸出通道，可並聯組合使用。 方便驅動大、中、小功率LED。 支援超高速 1MHz PWM 調光。 總電流高達1.2A (通道跨壓僅需0.6V)。 超高8KV輸出通道ESD耐受度，不僅I/V特性不變，且功能仍維持正常。 寬廣電源設計，方便您的電源取電。多通道的電流輸出設計，20mA~150m的通道電流輸出範圍；適合大、中、小功率 LED的應用。還支援超高速 1MHz PWM 調光。適合恆亮及須調光應用之燈條產品。

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中文翻译

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NU508 数据手册

  
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20mA~150mA, 8 channels constant current regulator  
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General LED Lighting  
Decoration lighting for architecture  
LCD back lighting  
Output current adjustable by external resistor  
3V ~ 12V wide range supply voltage  
1MHz OE PWM dimming support  
0V ~ 17V output sustain voltage  
low output voltage dropout  
Street lamp  
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0.25V @ 40mA/ch (total 320mA output)  
0.6V @ 150mA/ch (total 1.2A output)  
Minimized IDD consumption  
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TSSOP 173 mil 20 pin  
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Low speed VDD dimming support  
160  
half power thermal protect  
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Less than 4% chip current skew  
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Less than 9% channel to channel current skew  
Less than 0.5%/V line regulation  
Less that 1%/V load regulation  
25nS channel stagger output  
Green package  
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The NU508 is a dedicated designed constant current  
LED driver for general lighting. It can drive 8 channel LEDs  
simultaneously and provide each channel sink current up to  
150mA.  
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1
2
VDD  
NC  
Power supply  
The wide range of power supply capability makes the  
NU508 be driven easily by a simple circuit. For example,  
using a zener diode lowers down the VLED voltage for VDD or  
just routing VDD pin into the LED loading loop gets popper  
voltage for NU508.  
3
OE  
Output enable  
4
NC  
5
OUT0  
OUT1  
OUT2  
OUT3  
NC  
Output channel 1  
Output channel 2  
Output channel 3  
Output channel 4  
6
7
In the application of dimming function, the OE pin can  
switch all output channels on or off simultaneously with  
25nS time stagger between odd and even channels. The fast  
transient speed of OE function in NU508 is best for most of  
dimming requirements and the stagger function will lower  
the EMI generation in fast dimming situation.  
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
NC  
NC  
NC  
OUT4  
OUT5  
OUT6  
OUT7  
NC  
Output channel 5  
Output channel 6  
Output channel 7  
Output channel 8  
While in full current output, the NU508 only need  
about 0.6V drop on each output channel. This makes NU508  
to be the lowest power lost LED driver that compared with  
the other types of LED drivers. The minimized voltage drop  
in NU508 will increase the efficiency of entire lighting  
system and lower the heat generation from LED driver.  
REXT  
NC  
R external  
GND  
Ground  
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1

中文翻译

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