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LMct 5. The battery is a little over 9V. Even linear regulators are switching devices, which generate some noise that must be filtered.
Your use of Yahoo! Text in the Subject and Body of the message will be ignored. The burn your finger kind of hot. I originally thought my caps were too high in value, then I saw that the value used was a minimum. I wonder if anyone knows if the capacitors have any effect beyond smoothing out ripple. The ESR of the output capacitor will cause loop instability if it is too high or too low. According to the diagram Input is on the left, GND is in the dahasheet, and the 5V output should be on the right.
Keep in mind the adapter you have may be putting out more than 9 volts, or may not have a very clean output, both of which will make the regulator get hot. You probably still need the capacitor. The cap values are related to the frequency of the noise to be filtered.
What are the caps on the BS2P40 demo board? Also, remember the more voltage you have to drop and the more current you want to pull, the hotter the device will run.
Voltage regulator not working as expected. Another, does your LCD has backlights? Thank you for all the input. Another data sheet says 0. Many of datasheeh regulators require capacitance on the input and output to minimize oscillation. Can you let us know what is printed on the third line? Photos — easier uploading and sharing.
Check your caps, it might be leaky. I believe the data sheets show a 0. Thanks for the insight, guys. Otherwise the output impedance is too high and it oscillates. It is essential that the output capacitor meet these requirements, catasheet oscillations can result. I wonder if this will pose a problem. Quick Links Categories Recent Discussions. TOP Related Posts.
What are the caps on the BS2P40 demo board? Further reading of the spec sheet yields The only things being powered in the circuit is the stamp and the LCD. Hello, All I lmct The burn your finger kind of ddatasheet. Thanks, John In basicstamps yahoogroups. According to the diagram Input is on the left, GND is in the middle, and the 5V output should be on the right. The actual values of the caps matter, too.
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