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3.3V 800mA Linear Voltage Regulator – LD1117-3.3 TO-220 Adafruit

Original price was: $ 1.Current price is: $ 1.

SKU: mode_6294864196 Category: Components & Parts Tags: 3.3v, IC & Transistors, linear, regulator, voltage

Description
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Ah the esteemed LD1117, who amongst us has not used this popular low drop voltage regulator? This big chunky regulator will help you get your 4-15V battery or wall adapter down to a nice clean 3.3V with 1% regulation. Perfect for just about all electronics! This is the TO-220 version, with up to 800mA current capability, and has internal current limiting + thermal shut-down protection which makes it sturdy and pretty much indestructible – at least electronics-wise (we’re pretty sure a hammer might work…)

This regulator has a ~1V linear drop-out, better than the 780X series’ 2V. That means you must give it at least 4.3V to get a clean 3.3V out. This regulator is often used to get a 5V power supply to a a clean 3.3V. There is a constant ‘quiescent’ current draw of 5mA.

This regulator can provide up to 800 mA as long as it has proper heat-sinking. The higher your input voltage and output current, the more heat it will generate. Without an extra heatsink, you can burn off up to 2W. We like this calculator for determining your heat sink requirements It’s a TO-220 package, so use 62.5°C/Watt junction thermal resistance. The wattage of your set up is = (InputVoltage – 3.3V) * AverageCurrentInAmps. E.g. a 9V power plug and 0.5 Amp of average output current means the regulator is burning off (9 – 3.3)*0.5 = 2.85 Watts! This setup would need a heat sink Or you could use a 5V power supply for (5-3.3)*0.5 = 0.85W which would not require a heatsink.

This regulator requires at least 10uF electrolytic capacitors on both input and output for stability

Technical Details

Datasheet
Dimensions: 29mm x 10mm x 4mm / 1.1″ x 0.4″ x 0.2″
Pin Length: 13mm / 0.5″

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It is important to note that orders with multiple items are subject to a processing period that is based to the particular item.

Prior to shipping, our team will perform an extensive inspection of the products you have ordered. Most orders today are shipped in 48 hours. The expected delivery time will be between 3 and 7 days.

Returns

Due to the multiple parties involved such as the factory and the warehouse, we cannot completely manage our stock. The actual levels of stock can change at any moment. It's possible that you may not receive your order once the order has been made.

Our policy is for 30 days. If 30 days have gone without a trace since the purchase however, we're unable to give you a return or exchange.

You are able to return a product in the event that it is not used and still in the same state as when you first received it. The item must be returned in its original packaging.

3.3V 800mA Linear Voltage Regulator – LD1117-3.3 TO-220 Adafruit

Technical Details

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