Other Parts Discussed in Thread: LP38690 HI
Does LP38690 have any specification for slew rate of the input voltage?
Our customer are going to put the resistor for current limiting resistor on the input line. ( under dozens ohm)
It will be concerned…
Thank you for bringing this to our attention.
You are correct, proper Units for LP38690 Dropout Voltage is 'mV'.
I have brought this to the attention of our technical editing staff and they will get this corrected shortly.
Any feedback yet?
Also, I see that for the lp38690, there is a spec for minimum load current of 100 uA.
Our minimum load current will be well below 100uA. Will this par work or is there another that is more suited for this?
1. Could you capture the waveform:
- at the output of the TPS63031 before the bridge?
- At the end of the cable for different length? for ex. 0.2, 10 and 20meters
2. What is sm?
3. What measurement is the indicator providing? (voltage, current.…
Hey Sonali,
Your circuit looks correct.
However, because the datasheet specifies polarized capacitors, it makes me think that this part may need a minimum ESR to be stable.
There is no mention of it in the datasheet but it may be a safe choice…
Hi Wesley
Is there a reason why you would want an LDO? Because you are deriving 3.3V from a 12V Vout, the drop across the LDO would be huge causing it to heat up. You could try a switcher to go from 12V to 3.3V or 5V at 1A very easily.
If you are specific…
Other Parts Discussed in Thread: BQ25100 , LP38690 , TPS61253 Hi, All!
I attach a schematic file. 3343.POWER.pdf
That is used TPS61253, LP38690 and BQ25100 for wearable device.
Please, Reviwe & comment , ASAP.
Best Regards,
Inho Jeon
Based on the criteria given, I don't see anything close available in TO-220-5. Best fit would probably be the TPS76850 - but it's only available only in either 8-pin SOIC, or 20-pin HTSSOP. If I remove the 'Power Good' requirement, the LP38690, LP38692…
