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- เผยแพร่เมื่อ 31 พ.ค. 2024
- A low dropout voltage regulator with features and cost that make it attractive in ESP8266 and ESP32 battery based projects.I will do a quick run down the datasheet and an application sample..
GET SPX3819
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Amazon.com - amzn.to/2PgHirG
Amazon.ca - amzn.to/3dEqdBk
AliExpress - s.click.aliexpress.com/e/_AWx8sd
DATASHEET
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www.maxlinear.com/ds/spx3819.pdf
CREDITS
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Subed.
You become my top watched tutor these few days, I’m working on espnow mesh network, or trying to wrap my head around it 😊
Thanks MrDIY, this is a very interesting subject and maybe you find the best one...
Thanks for the video really looking into how this lipo button batteries perform ( in terms of how many times they can trasmit a signal). Cheers!
Thank you for sharing this part number. I have 100 on the way now :)
Fantastic!
Very informative thanks
so this thing could be used for 12v inputs?
i have many 12v sensors i could use...
or is there other better solution?
Very helpful thanks !
Any alternative for 1000mA ?
Very helpful indeed!
Is it possible to use as an alternative of SPX3819? As SPX3819 not available.
NCP3335AMN330R2G - LDO Voltage Regulator, Fixed, 2.6 V to 12 V in, 260 mV drop, 3.3 V/700 mA out, DFN-10
Yes it is good idea to control LDO with ATtiny but how much current does ATtiny13a and 3.3v pir sensor consume I wonder? ESP 8266 can consume 3uA in deep sleep with a good LDO like HT7333. I really wonder how much current ATtiny13a consumes with a PIR sensor in total.
good video. I think that RT9080 is best but more expensive.
I will check it out, thanks
based on my research, RT9080-33GJ5 is best -> input voltage range is from 1.2V to 5.5V. EXCLUDING reverse battery protection. I think for IOT devices (probably needs to replace battery every 2-3 years), reverse battery protection is not a big problem.
do you keep ATtiny in sleep mode or in active mode? Active mode = 240uA - that is way to much for battery. I am still thinking how to monitor the pins without drawing so much of current. Unless you keep ESP in sleep mode with "wake up on gpio" when you can get to 7uA during the sleep.
yes, I keep it in the deep sleep and wake up only on interrupts or timers
@@MrDIYca so you use sleeping Attiny to wake up, enable power supply for esp and then the rest, right? what is the reason for using Attiny to sleep rather than esp to sleep? what is the sleep current for attiny?
the datasheet says it can run on 18v. but people write that it burns out at 10v and supplies 10v to the microcontroller and modules !!! many fakes! be careful with connections above 5v.
agreed
Thank you for sharing ， but Why can't remove the Attiny and directly switch_input to the EN pin of the ldo, so that it is more energy efficient without the Attiny？ I'm very confused why do you have to add a Attiny
Can I get rid of Attiny if Switch_input is a self-reset button ? My project is to use the self-reset button to remotely control the light through espnow
You can but it will only trigger in one direction, for example, when you close the door and not when it is opened. The other downside, when the door is closed the LDO will always be ON draining the battery.