Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.
Part Number: LM3940
Hi Team,
We are using LM3940IMP-3.3/NOPB this LDO in our design.
Our requirement: 5V to 3.3V @1A
We need to know how to decide Heatsink need to be added or not?
We seen the formula in datasheet. But we don't get the value of Ig…
Part Number: LM3940 Other Parts Discussed in Thread: TMP302 , TLV755P I have a few questions about a design I'm creating using the LM3940 voltage regulator to power the TMP302 temperature switch.
The first question is very straightforward. For the…
Part Number: LM3940 Hello,
I 'm using LM3940 in my project to generate 3.3 V supply for a microcontroller. The input is 5.2 V. For the initial period after assembly this IC was giving me 3.28 V, but now it is showing 3.7 V output which is out of the recommended…
Part Number: LM3940 Hello,
I 'm using LM3940 in my project to generate 3.3 V supply for a microcontroller. The input is 5.2 V. For the initial period after assembly this IC was giving me 3.28 V, but now it is showing 3.7 V output which is out of the recommended…
Part Number: LM3940 Tool/software: WEBENCH® Design Tools Hi,
Need to know the efficiency of LM3940 LDO. or any application note or formula for efficiency calculation.
generally i take 65 to 70% efficiency for LDO. but i need to know the efficiecny calculation…
Part Number: LM3940 Hello everyone,
Does the LM3940 have a minimum load requirement?
My LM3940 outputs about 4V but I do not know why.
Best regards,
Keiichi
Part Number: LM3940 Other Parts Discussed in Thread: TINA-TI , Tool/software: TINA-TI or Spice Models can you please provide me with TINA -TI_SPICE MODEL file for the part LM3940 ..Kindly help me out with the specified file as early as possible so that…
Part Number: LM3940 Dear sir/madam,
We are facing problem related to this IC part no LM3940(3.3V), LP388585-1.2, LP38512-1.8 with quiescent current.
Kindly suggest us the alternate part no with same pinout with higher quiescent current.
Thanks & Regards…
Part Number: LM3940 Team,
Customer already used LM3940 but not satisfied the noise performance. By adding more output caps, it seems help but become non-stable. Figure 12 in datasheet only shows Cout = 33uF stable region. Could you please provide more…
Part Number: LM3940 On December 4, 2018, we received 410 pieces of this PN from Digi-key. Our PO 044014. Our Receiver 088310. We recently started using this part and Engineering and Novatel discovered this issue where the leads turn yellowish after solder…
