RE: Using Diode With 4.2V LiPo?

Dave_couling — Fri, 13 Oct 2017 00:26:08 GMT

This will work with a few caveat. Make sure its safe across the temperature spectrum and current variations. Vf varies with these parameters. This isn't great practice but it works.

RE: Using Diode With 4.2V LiPo?

MANGO — Fri, 13 Oct 2017 00:00:44 GMT

Hello.

I'm wondering if it would be safe to use a diode

Not sure about safety. You can use it for prototyping.

However, using a regulator or a buck converter will be better.

Since you are using a Lithium battery, how are you going to prepare a charging circuit?

Assuming

you use a 1000mAh, or higher, battery
the total current consumption will be less than 150mA

or use a boost converter to power the LEDs

you USB to charge the Lithium battery

then I can recommend TI’s BQ25010RHLR, a Li-ion charger + buck converter.

This is just an example; if this not your situation,

contact vendors which sell buck converters and Lithium battery chargers

and they will provide a suitable one for you.

If you are interested in the BQ25010RHLR,

TI E2E question - heat problem

TI E2E question - schematic for BQ25010, configuring 3V

check these out.

-Best regards, MANGO