LMH/ Texas Instruments Linear Voltage Regulators LMH/ Voltage Regulator datasheet, inventory, & pricing. The LM/LMC is a voltage regulator designed prima- rily for series regulator applications. By itself, it will supply output currents up to mA; but external. The LM is a monolithic integrated programmable voltage regulator, assembled in. lead dual in-line plastic package. The circuit provides internal current.

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Voltage Regulator

About 15 years ago I worked for datsaheet HV power supply company. Don’t know why your reply got downvoted, definitely of value. This can be helpful if you are a beginner trying to decipher the terminology.

Vpot can be shown to vary from 7. There are two aspects to this.

The metal can and the flat-pack do not have enough pins and so they skip this one. But again, all with certain limitations. For finding the value of output voltage for this circuit you can use the formula below:.

National Semiconductor

Thank you very much for your reply, this explains a lot in only a few lines. Sorry I can’t remember which pins.


I’m going to spend some time pouring over the circuit with this info. The is ancient in the world of IC voltage regulators. The negative Vout will of course not happen with a ground referenced positive input satasheet, but would be possible if Vin was referenced against some negative value.

Are they unity voltage gain? See data sheet for dissipation ratings which set max Vdrop x Iout you can use. I’m an electrical engineer but optics and will admit being a complete noob with electronics, but I’m trying to change that.

LMH/ from Texas Instruments

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The zener diode I refer to is in the function block diagram of the datasheet and refers to zener voltage Lm7233h out of pin 9.

Several companies manufacture the LM, but the data sheets are pretty much the same. If you change k in steps of 2. Just wanted to mention this for something to think about while troubleshooting. The current limit is crude in that it has no “foldback” action – it limits current AT 2A if you try to draw too much.


The problem was traced to the If you are only trying to build a volt 2 amp power supply, there are better ways to do it in If things go wrong and Vout is not as high as it should be due to a failure somewhere then Q1 tries to tear the arms off the ie apply too much base voltage – if the is tougher than Q1 then Q1 may lose instead.

Is Q1 an amplifying stage? Post as a guest Name. You can parallel LM’s – ideally add a small output resistor between Vout and feedback resistor network to achieve current sharing. Is lm723u due to pin 9 being grounded? LM is an adjustable voltage regulator IC used for shunt regulator, current regulator, and temperature controller. The latter being a very curious designation. Sign up using Facebook. If you wanted to go to zero Vout you needed some cunning due to the non zero reference voltage so the upside down pot polarity system was used.

FiddyOhm 2, 7 9. Above lm732h gives this graph.