Part Number: LM22670 Hi,
Does the current limit operate at start-up?
Inrush current is flowing maximum 10A on my customer's circuit.
I'm confirming a detail of the condition now.
Best Regards,
Kuramochi
Part Number: LM22670 Hello,
I'm using the LM22670 to charge two supercapacitors and after this supply a circuit (5V/1A).
I have almost 50 units working well, but 3 units got burn.
Below you can see the images of the 3 burned IC's:
…
Part Number: LM22670
Hi,
I received the following question from my customer.
If RT resistance is set larger and larger(to few MΩ), what ohms is that switching frequency changes from RT frequency to internal frequency(500kHz) as below?
They are recognizing…
Other Parts Discussed in Thread: LM22670 Hi, the latest version of the LM22670 data sheet includes a MOSFET in the Self-Synchronization section(7.3.4).
We have implemented this in our circuit however it seems to have introduced significant noise into the…
Hello All
We are having a similar issue to this older thread although the occurrence of the LM22670-ADJ failing is less than 1% and extremely random. BTW does this need to be a new post?
Our Production is currently running at over 2k pcs per annum for…
Hello
Webench does not take into account the lower temperature ranges.
It uses the highest temperature to determine if the thermal limits of the device are not violated.
We have many devices that can support 5V at 2A and 12V at 1A from 22V to 32V.
Are…
I'm using the recommended configuration on the datasheet, however, would like to keep the switching noise low. I'm adding an additional LC filter stage at the output. Should I tie the feedback resistor (R_FBT) to the input of this LC filter or the output…
Other Parts Discussed in Thread: LM22670 Hi,
I am trying to use the AM-1885 LM22670 Evaluation Board for a switching application and need to switch from 12V down to 5V. This regulator has a preset Vout of 3.3V and the datasheet says that Vout is adjustable;…
Other Parts Discussed in Thread: LM22670 Hello,
we are running a prototype with a powersupply using multiple LM22670 in self-synchronized mode. This is achieved by connecting the RT/SYNC pins together and then to GND with a 1k resistor. This is the way…