Linear Voltage Regulator

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Linear Voltage Regulator

Postby ARDavid » Mon Oct 30, 2017 10:13 am

I'm modifying my PCB board and using some spare parts. Can I use this linear voltage regulator ( https://www.icrfq.com/part/2717671-LD1117V50C.html ) on the board? That place is the TO-92.

Thanks.
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Re: Linear Voltage Regulator

Postby Karlsweldt » Tue Oct 31, 2017 6:48 am

May be a good solution, but ensure it meets the power requirements of the device, and has proper regulation.
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Re: Linear Voltage Regulator

Postby ARDavid » Wed Nov 01, 2017 1:18 am

Thanks Karlsweldt, the power voltage is matched on the board but confusing on regulation.
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Re: Linear Voltage Regulator

Postby Karlsweldt » Wed Nov 01, 2017 7:55 am

Regulation of voltage is critical with most electronic circuits. More than 2% ripple or differences, and data flow can become corrupt. Irregular voltage levels are best kept within 1% of design. Current flow does vary with circuit load, but as long as voltage remains stable, few problems. Pure DC voltage is the ideal for computer power needs.
From the specs page on your regulator, note "Current - Output 800mA: Voltage - Dropout (Typical) 1.1V @ 800mA". This indicates that regulation falls off greatly at the peak of its output current limitations.
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