Part Number: LM2574 On the LM2574 datasheet (page 4) in the absolute maximum specification it has the output voltage to ground steady state voltage rating.
I'm wondering if there is a transient output voltage pin undershoot maximum? For most switching…
Part Number: LM2574HV Other Parts Discussed in Thread: LM2574 , LMR36506 Hello
Is it possible to generate a -15V output voltage with a LM2574-15 as a inverting buck boost regulator?
Thank you
Part Number: LM2594 Other Parts Discussed in Thread: LM2674 , LM2574 , Looking to simulate an LM2594 design, but WEBENCH is not offering it as an option. Is there something I'm missing? It does offer LM2574, however I've got an existing design that uses…
Hi Danilo,
I think the main cause is the switching frequency, which is 52kHz. These are legacy devices and TI does release newer part, like the TPS560430 which is also mentioned in the latest LM2574 datasheet. The TPS560430 operated at 1.1MHz and it should…
Part Number: LM2574HV Other Parts Discussed in Thread: LM2574 Hello,
I am currently planning on using the LM2574HV adjustable switching regulator to regulate 24V input down to 5V, no more than 0.1A needed on output. However, we also need the ability to…
Hello
The LM2594 devices are bi-polar and do not require a boot strap capacitor. All of the newer alternatives will require a boot capacitor
and therefore a re-work of the PCB. You might look at the LM2574; it is bi-polar. Otherwise the newer devices…
Hello
The LM2597 can be used, however the DELAY pin must be left floating.
Another option is the LM2674; you need one extra capacitor for that device.
The LM2574 is another option but it is not P-to-P.
The TPS54321 seems to be in stock; but again is not…
Hi Harrison,
Thank you for the answer.
If I understand correctly I should use electrolytic/tantalum capacitors for the LM2574 and I should use ceramic capacitors for LMZ34002 as stated in datasheets.
Part Number: TL2575-05 Other Parts Discussed in Thread: LM2574 , LM2674 , LM2675 , LM22675
Hello,
I'm considering to use a TL2575 for a application with the following values:
Vin = 24V
Vout = 5V
Iout = 375mA
From the Graph on the datasheet (Figure 14…
Hi Josiah,
the LM2674 is directly driving the fan. Not as a pre-regulator. We had to add the fan afterwards, after the project was already finished. We had a 18V supply and decided to add a 5V Fan to it, powered by a LM2674 switcher. The LM2674 has a…
