Hi.
I've the same trouble and I've burnout 5 samples.
Looks like the L selection equation has mistakes.
I need 5 Vdc 100 mA fixed sourcing with 24 Vdc.
When the IC burns, sends 24 Vdc to the output. It's a big problem. I've burnout a microcontroller…
Other Parts Discussed in Thread: LM2842 , LM2840 Hello.
My customers are considering the use of the LM2842.
There is no description of Light Load Operation (Discontinuous Mode) to LM2842's datasheet.
So, I think that is a problem for use in always Discontinuous…
Hi
My custome has question.The brink of adoption propriety, Please cooperate!
■Customer SPEC
VIN＝32V
VOUT=5.0V
MAX IOUT=50mA
SWｆ=1.25MHz
Not the problem using the 15uH as of a circuit diagram of Inductor is DS P15?
Best Regards
T Kishi
Other Parts Discussed in Thread: LM2840 Greetings,
I have essentially duplicated Figure 15 of the LM2840 Datasheet. I'm using the LM2841X. I did a careful layout heeding the guidelines. Above a certain input voltage, the output does not regulate when started…
Part Number: LM2842 Other Parts Discussed in Thread: LM2840 Hi team,
My customer want to ask what's the purpose of schottky diode in the typical circuit? They test the circuit without this diode and it still works fine. Can they remove this diode? …
Other Parts Discussed in Thread: LM2840 , LM2738 Hi!
I am designing a Dc Dc converter with LM2840 that needs to have 12 V at the output (0.1A max).
I prepare a prototype (like figure 4 of the datasheet) with the Y version of the IC for reduce inductor space…
Yokota-san,
Please allow us some time to check this on the EVM to answer some of your questions.
As for the 3rd question, SHDN pin vs Current Limit, we do not recommend to use this method to adjust the current limit. I would use the appropriate part…
Hello Collin,
I've ordered the TPS54062. Thank you.
In the meantime I built the LM2840 circuit and the current went down, but at 24V it is still pulling 4.25mA with just the ADC connected. Without any load on the LM2840, so just XTR117 and LM2840…
