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2777 Datasheet(PDF) 2 Page - Adafruit Industries

Part # 2777
Description  USB to 2.1mm DC Booster Cable - 9V
PDF  2 Pages
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Manufacturer  ADAFRUIT [Adafruit Industries]
Direct Link  https://www.adafruit.com/
Logo ADAFRUIT - Adafruit Industries

2777 Datasheet(HTML) 2 Page - Adafruit Industries

  2777 Datasheet HTML 1Page - Adafruit Industries 2777 Datasheet HTML 2Page - Adafruit Industries  
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Here's our measurements for various current draws when we set our bench supply to provide a steady 
5V voltage 
o
 50mA (9.0V output), 100mA,  90% efficiency 
o
100ma (8.95), 205mA in, 87% efficiency 
o
200ma (8.9V): 410mA in, 86% efficiency 
o
300ma (8.8V): 620mA in, 85% efficiency 
o
500ma (8.8V): 1060mA in, 83% efficiency 
o
700ma (8.8V): 1550mA in, 80% efficiency 
So, overall there's a 90% efficiency at low current draw that drops do about 80% at high current use. 
There's also a 3 mA quiescent current. Note that often times the USB port voltage can droop too, and in 
addition you may have power losses with any thin or low quality cables with high resistivity! 
 
Technical Details 
o
Cable Length: ~1.2m / ~47" 
o
Weight: 35.1g 
 
 
 
 
 
 
 
 
 
 
 
 
 
                                                 https://www.adafruit.com/product/2777 10‐30‐17 



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