Lm317 Application Circuit

Some circuits based on lm317 voltage regulator.

Lm317 application circuit.

0 1 load regulation typ. Circuit diagram lm317 voltage regulator ic. It s an adjustable three terminal voltage regulator ic with a high output current value of 1 5a. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage.

4 lead acid battery charger circuits see 4 lm317 lead acid battery charger circuits for 6v 12v and 24v battery. Using lm317 and 2n3055 so easy and cheap. Lm317 is a positive voltage regulator with an adjustable voltage range from 1 25 v to 37 v. 0 01 v line regulation 1 5 a output current adjustable output down to 1 25 v current limit constant with temperature 80 db ripple rejection short circuit.

Few useful circuits using the voltage regulator ic lm317 is shown here. It can also provide float operation for high voltage application. In past circuits external battery charger control jim keith 11 21 2013. The lm317 ic has many features such as current limiting thermal protection and safe operating area protection.

The ic lm317 promises countless interesting and useful power enhancement circuits applicable in numerous fields where well dimensioned power supplies become crucially important. The ic is capable of delivering up to 1a of output current. Up to now this battery level indicator design was limited to 12 24v applications. Some assorted useful lm317 application circuits from national semiconductor pdf datasheet has been discretely explained in this chapter through the relevant circuit illustrations.

Low voltage battery level indicator jim keith 06 11 2014. Adjust voltage in steps 3v 6v 9v 12v. With automatic charging and full charged indicator using tl431. High quality 3a adjustable voltage regulator.

Lm317 is a three terminal voltage regulator ic with a high output current value of 1 5a. Lm317 circuits projects 12 browse through a total of 12 lm317 circuits projects. Lm317 d lm317 ncv317 voltage regulator adjustable output positive 1 5 a the lm317 is an adjustable 3 terminal positive voltage regulator capable of supplying in excess of 1 5 a over an output voltage range of 1 2 v to 37 v. In most of the applications due to irregular loads the output voltage produced has fluctuations in it which can lead to damaging loads.

The lm317 ic helps in current limiting thermal overload protection and safe operating area protection. It can also provide a float function for high voltage uses. The discussed lm317 configuration is so accurate that it becomes ideally suitable for all such specialist current and voltage regulated applications. It can supply greater than 1 5 a at the output.

Lm117 lm317 n wide temperature three pin adjustable regulator 1 1 features 1 for a newer drop in alternative see the lm317 typ. And in fine 1 25v to 20v.