LMCT-5 Datasheet, LM 5V Low Dropout Voltage Regulator Datasheet, buy LMCT Pin 5 and 6 need to be tied together on PCB board (5) ESD rating is based on the human body model, pF discharged LMCT/NOPB .. in TI data books or data sheets is permissible only if reproduction is without alteration. Digi-Key Part Number, LMCT/NOPB-ND. Copy LMCT/NOPB- ND. Quantity Datasheets, LMN, C Datasheet. Design Resources.
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The power in Watts being dissipated within the regulator is the voltage drop across the regulator times the datssheet passing through it. My input is 9V, I’m using the power supply that came with the P40 demo board. Mine is unfortunately putting out more than 5V, which defeats the purpose of having a regulator.
I picked up some 5V 1A voltage regulators at a shop in town. Thanks for the insight, guys. Here’s a snip from p. I use these all the time, quite handy, especially with batteries since it can take a hit with the polarity hooked up backwards I can confirm for you that Left is Vin Middle is GND Right is output ive never tried without cap’s but yes they datasneet for smoothing, but I dont know what effect outside of that they have my little breadboard bug that i made is rock solid 4.
Another, does your LCD has backlights?
LM2940ct 5.0 gets HOT quick.
There is another possibility Many of the regulators require capacitance on the input and output to minimize oscillation. The number after the hyphen is the dqtasheet output voltage and the input voltage must be somewhat higher. What are the caps on the BS2P40 demo board? I’m pretty sure Cap value correlates to the noise frequency, so no, you can’t just “go over” the value and still have the same effect.
If I hook up another 9V in parallel to add more currentit suddenly jumps to around 7V which I would expect if it were in series, but it’s not. Comments 10 Comments sorted by Date Added Votes.
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LMCT/NOPB from Texas Instruments
Check your caps, it might be leaky. I wonder if this will pose a problem. Quick Links Categories Recent Discussions.
Should I use some other voltage regulator? Thanks, John In basicstamps yahoogroups. Furthermore, hidden in the ap note the ones that I have seen is an admonition to have a minimum current load.
LMCT/NOPB Datasheet(PDF) – TI store
According to the diagram Input is on the left, GND is in the middle, and the 5V output should be on the right. Is ths just because of the load placed on it due to the lcd? Another data sheet says 0. Thank you for all the input. Further reading of the spec sheet yields Did you take steps to obtain caps with appropriate ESR? Can you let us know what is printed on the third line? I wonder if anyone knows if the capacitors have lm2940ct-55.0 effect beyond smoothing out ripple.
Typically, LCD displays take very little, but I’m not familiar with datasheeh unit you’re using. Sign In or Register to comment. Hi John, What is the input voltage to the regulator — can you measure it?
It’s interesting that mine gets this hot when I have seen schematics using the same setup, with a 10uf cap even. Click for larger version Dtasheet found a datasheet here: Also, remember the more voltage you have to drop and the more current you want to pull, the hotter the device will run. It’s a 3-pin TO package. The burn your finger lm940ct-5.0 of hot. Do you know about how much output current you have? I like to put a led on the output for the minimum load, and to show, solidly, that power IS really on.
It is essential that the output capacitor meet these requirements, or oscillations can result.