How can such a simple chip do so much?

Flashlight Modding and DIY Parts
1

I pulled this driver out of an UltraFire C8.
It has 5 modes, High, Med, Low, Strobe, SOS.
It does this with 1 three legged IC, 1cap and 5 resistors.
I was just wondering if somebody could explain how this very simple driver does so much.

I did a few searches on the HG5K1 IC but only found somebody selling parts for a long range cordless phone :person_facepalming:

2

Are there any parts on the tailcap board?

3

Is that an LB XM-L?

4

See this thread.
The IC is exactly made for this.

5

The wonders of silicon.

It really doesn’t do that much, at least compared to chips in our phones.

6

Wow! Good call on that one. Not the best picture to work from either.

Here’s a close-up

I bought these cheap UltraFire C8’s from GB for $7.57.
I only wanted the hosts so didn’t care about the crappy Lattice Brites.

Thanks TBone, That explains it.
Three leg mini controller #CX2859 IC.
That’s about as minimalist a driver could be and still have 5 modes including Flashy modes.