The LM series operates at a switching frequency .. datasheet and the thermal model in LMX Made Simple software (version ). The value θJ−A for. Texas Instruments LM are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Texas Instruments LM This feature greatly simplifies the design of switch-mode power supplies using these advanced ICs. Also included in the datasheet are selector guides for diodes.
|Published (Last):||23 December 2005|
|PDF File Size:||3.85 Mb|
|ePub File Size:||7.43 Mb|
|Price:||Free* [*Free Regsitration Required]|
Discussion in ‘ Power Electronics ‘ started by tshaApr 26, Apr 26, 1. Apr 26, 5 0. I am trying to convert from 12v to 6v. I followed the instructions in the LM datasheet. The problem is I am getting lm26755 a few mV on the output and the LM gets super hot fast.
I have rebuilt this circuit 5 times on different boards and different layouts.
I made sure my soldering is good. I just can’t diagnose what I am doing wrong any help would be appreciated. I am using the following parts: Apr 26, 2.
Nov 12, 3, 2, Apr 26, 3. Jun 4, 6, 1, The capacitor values are much bigger than those suggested for input and output by the data sheet.
Apr 26, 4. I’ll go back see if I can find the right size. What size caps would you guys suggest? Apr 26, 5.
12v to 6v Buck Converter LM2675-adj producing no output voltage and getting very hot
Cb is shown in the data sheet as 0. Table 3, page 15, shows a table for selecting the output capacitor, and pages following that discuss the input capacitor.
Apr 26, 6. Okay so I change the input capacitor to uF electrolytic and the output to 47uF. I used the following equation as per the datasheet: Still the IC is just getting hot and only outputting mV. Apr 26, 7. Apr 26, 8. I just realised, I made a typo and continued it. That might explain why I didn’t have CB. This is the data sheet I have been using: Apr 26, 9. It was the diode around the wrong way. I didn’t dztasheet it was wrong because the previous one I built had it that way and still worked.
LM Datasheet(PDF) – National Semiconductor (TI)
Wish I could delete this thread, failed project, failed post haha. Thanks for your help tho.
I am learning and hopefully, one day soon can help others. Voltage regulator and caps getting very hot Posted by andrei.
LM2675-5.0 Buck Converter overview
Posted by jrd-aac in forum: Buck Converter Output Voltage Posted by notoriusjt2 in forum: Buck converter output voltage ripple Posted by notoriusjt2 in forum: You May Also Like: Control an Arduino with Bluetooth This article will show you how to set up two way communication between an Arduino and your Android Smartphone using Bluetooth. Your name or email address: Do you already have an account? Datasueet, create an account now.
Yes, my password is: Quote of the day.