LMCT/NOPB Texas Instruments LDO Voltage Regulators 1A LDO REG datasheet, inventory, & pricing. 1A LDO REG. Datasheet: . Documents (5). Low drop-out voltage regulator. Order code. Manufacturer code. Description. LMCT LMCT-5 1A REGULATOR (RC). LMCT-5 -. The LM/LMC positive voltage regulator features the ability to source 1A of output current with a dropout voltage of typically V and a .

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I tried with another LMCT5 and got the same result. Does it have a backlight? What are the caps on the BS2P40 demo board? Let us know if this solves the problem?

LM2940CT-5 PDF Datasheet浏览和下载

It’s interesting that mine gets this hot when I have seen schematics using the same setup, with a 10uf cap even. I like to put a led on the output for the minimum load, and to show, solidly, that power IS really on.

I have a 22uf lm2940dt-5 between the output and ground as specified in the datasheet for stability. I can’t find a schematic of it. Groups is subject to http: Similar Threads Program works fine alone but not as part of a larger program. Members who have read this thread: Check your caps, it might be leaky.

Any ideas why is not working with the LMCT5? That would work alright. I found a data sheet on the Lm2940dt-5, and it looks like you need at least 22uF on the output, and drop-out will be around 0. Thanks, John In basicstamps yahoogroups. The burn your finger kind of hot. The ESR of the output capacitor will cause loop instability if it is too high or too low.


The LM gets hot after a few min which isn’t nice. I cannot find out why is not working.

LMCT-5 Datasheet, PDF – Alldatasheet

Results 1 to 5 of 5. Larger values dtasheet output capacitance will give improved transient response. Hi All, I have a PIC application 16f88 and 2 lk2940ct-5 that is working fine with a from National and a 6 volts 1 amper battery. Many of the regulators require capacitance on the input and output to minimize oscillation. My input is 9V, I’m using the power supply that came with the P40 demo board. The only things being powered in the circuit is the stamp and the LCD. Is ths just because of the load placed on it due to the lcd?

LMCT-5 (ETC) PDF技术资料下载 LMCT-5 供应信息 IC Datasheet 数据表 (6/17 页)

Quick Links Categories Recent Discussions. The time now is I haven’t experienced it personally, but you could have an issue there that might result in overheating.

Do you know about how much output current you have? Typically, LCD displays take very little, but I’m not familiar with the unit you’re using. Join Date Jul Posts 2, Here’s a snip from p. I believe the data sheets show a 0. Also, remember the more voltage you have to drop and the more current you want to pull, the hotter the device will run. Hi Daniel, Just checked the datasheet http: Check datasheet for correct smoothing and decoupling capacitance values. Bob Edit oops Bruce has just giving this info.


Hello, All I have is a cap between the output and ground at 22uf. Regards, -Bruce tech at rentron. Another, does your LCD has backlights?

Furthermore, hidden in the ap note the ones that I have seen is an admonition to have dataxheet minimum current load. If you aren’t running very much current, and your Vin isn’t too high, a small clip-on heat sink can significantly reduce the regulator’s temperature.

Sign In or Register to comment. The acceptable range of ESR plotted versus load current is shown in the graph below.

LM2940ct 5.0 gets HOT quick.

Keep in mind the adapter you have may be putting out more than 9 volts, or may eatasheet have a very clean output, both of which lm2940cf-5 make the regulator get hot. I couldn’t find a datasheet for the LMCT5, but, some LDO types require specific capacitor values on the output or they will oscillate, and that causes major problems.

Photos – easier uploading and sharing. Comments 10 Lm29940ct-5 sorted by Date Added Votes. Hi danielhr77, Make sure you have enough capacitance fitted both before and after the regulator. Should I use some other voltage regulator? Another data sheet says 0.

Friday, December 05, Text in the Subject and Body of the message will be ignored. Basic Stamp List Subject: I will try it with the additional cap.