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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However, I don’t understand:. It is a good question and clearly on-topic. Second, the input voltage must be at least 3.

Km723h the purpose of this? It was first introduced in the lm723b ‘s. The Model T of the power transistor world. Vref appears on pin 6. Don’t know why your reply got downvoted, definitely of value. The current limit is crude in that it has no “foldback” action – it limits current AT 2A if you try to draw too much. Retrieved from ” http: This is the conventional schematic symbol for a voltmeter.

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 daatasheet Q1 then Q1 may lose instead. Be sure Vin does not exceed 35V!. To use this IC for the different range of required output voltage, you can proceed with various circuits available in LM datasheet with having your needed output range. Then study the example application circuits given in it.


To get more output voltage you need to use “booster” transistors.

Voltage Regulator

IF you want to abandon this cct but keep it working If you can tolerate 1. I’ve attached the circuit diagram.

Vpot can be shown to vary from 7. Is Q1 an amplifying stage? You may find there are several data sheets available from l723h manufacturers.

For finding the value of output voltage for this circuit you can use the formula below:. The old one had 2 of the pins open while which were being used for voltage feedback sensing.

I don’t see a “zener diode” in the schematic. This page was last modified on 19 Aprilat Q1 can datashete as much base drive as you want in fact, as there is no series resistor between Q1 and the base – this is, if not a design “error”, then at least a design weakness. That sort of thing. I will try to search more thoroughly next time before asking. Is that due to pin 9 being grounded? For 2A current limit R10 is llm723h 0.

National Semiconductor

But if your power supply is very old, and you have replaced the IC. If it is datasheeg 1 Watt it might last a long time. Is R8 a bias resistor? Unless I am missing it, I don’t see a zener diode on that schematic anywhere. The latter being a very curious designation. To those of you who have offered assistance thank you very kindly for your time.


LMH datasheet & applicatoin notes – Datasheet Archive

Go above this and kaput! My response below suggests a plug-in choice: On the functional block diagram of thepin 9 is the output directly below a zener diode. If the zener is not grounded it won’t work properly.

Thank you for your response! Agreed – the inverting pin is datahseet by a very “interesting” arrangement – in fact that’s the exact part that datxsheet me besides the Vz being pulled to ground. See at end for specific details of your circuit’s operation. Spehro Pefhany k 4 Several companies manufacture the LM, but the data km723h are pretty much the same.

It can able to provide a higher range of output voltage and current up to 10A by simply adding a series pass transistor with it, with having a wider range of operating temperature so the IC able to withstand for long.