Please take a look at this Youtube DIY Video that teach you how to use this step-down module to DIY Building a TRUE 4k home cinema projector (it’s awesome)
it's very useful and funny if you DIY by yourself.(Video from Web Celebrity “DIY Perks” at Youtube website)
DIY 4K Home Cinema Projector: https://www.youtube.com/watch?v=YfvTjQ9MCwY
Product Description:
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Model/name: LM2596S-ADJ DC-DC step-down module
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Input voltage: 4 V ~ 35V
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Output voltage:1.23V~30V
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Output current:3A (Max)
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Conversion efficiency: 92% (the highest)
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Output ripple:< 30 mv
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Switching frequency:150 KHZ
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Working temperature:- 40 ~ + 85
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Size:48 mm * 23 * 14 mm mm (length * width * height)
Connection port:
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Range of input voltage: 4 V dc to 35 V, the input voltage must be higher than to the output voltage of 1.5 V or more. Can't booster.
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Range of output voltage: 1.23 V dc to 30 V voltage continuously adjustable, high efficiency (92%) of the maximum due to LM2596S chip. The output current is 3 A.
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Note: this is step-down module, the input voltage must be higher than the output voltage.
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If you need use this model to work for a long time, we suggest you control the output current under 2.5A, or output power 10 w above, please add heat sink.
Package Includes: Some DC-DC Step down Module Buck(it's up to your choice)
Technical Parameters:
N+: Input Positive; IN-: Input Negative. OUT+: Output Positive; OUT-: Output Negative.