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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Vref appears on pin 6.

Sign up using Email and Password. If you need to repair this circuit with original vatasheet then it will be possible to do so. LM is an adjustable voltage regulator IC used for shunt regulator, current regulator, and temperature controller.

LM IC Pinout, Specifications, Equivalent & Datasheet

All understood to mean “within the legitimate bounds of the LM’s capabilities”. I think that my pinout is correct used http: Hard to know what to conclude from this: Thank you for your response!

Go above this and kaput! Are they unity voltage gain?


National Semiconductor

I suspect you’ll find a collector-base short on Q4. I will try to search more thoroughly next time before asking. Be sure Vin does not exceed 35V!. With the voltage turned right down of course.

The current limit works by dropping voltage across R The Voltage Regulator Description: Above formula gives this graph The circuit is MUCH easier to understand if you draw it with the internals shown and arrange it around the in logical fashion.

This page was last modified on 19 Aprilat Is Q2 providing feedback? These terms seem generic and innocent enough, but have a special meaning within the context of voltage regulators. I’m quite vatasheet after spending some time monkeying with this, so any direction is greatly appreciated. Q2 is a current limiter. The common zero point of 6.

Sign up using Facebook. The problem was traced to the But again, all with certain limitations.

Power supply with LM – Electrical Engineering Stack Exchange

Also, Q1 is a transistor – which I’m sure was just a mistake. To those of you who have offered assistance thank you very kindly for your time. Then study the example application circuits given in it.


MJXS 71 1 3 L7m23h Q1 is a TO92 package with dissipation datasheeh under 1 Watt this is probably why it exploded – summat went aglae, the tried to turn on to cause Vout to rise by turning on Q1 to turn on Q3, the cct did not comply so it kept turning Q1 on and it gave up dur to the ‘s base current. Don’t worry, this question won’t stay closed.

For finding the value of output voltage for this circuit you can use the formula below:. You can parallel LM’s – ideally add a small output resistor between Vout and feedback resistor network to achieve current sharing.

See data sheet for dissipation ratings which set max Vdrop x Iout you can use. I’m especially unclear exactly how the transistors operate, as their connections aren’t clear to me. But if your power supply is very old, and you have replaced the IC.