DDIblis
.
- Joined
- Feb 28, 2019
- Messages
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- 42
I've been banging my head against a wall with these docs for 3 days now and I can't for the life of me figure out what resistors to select for R3 Since R4 seems to always be set at 15k in all their diagrams, and I haven't the slightest clue what the Vripple is which is apparently necessary for their equation on finding the resistors needed for the Vout.
The chip in question is SC174, selected for its up to 4A output, and up to 95% of Vin voltage. As well as being able to run from a 3.7 cell.
The Vouts I'm trying to get are the
1.25V3.1A
2.5V0.1A
3.5V0.1A
needed for ps2.
Attached is the documentation, an image of my diagram, and an image of their diagram. Please let me know if there's anything else you need. Or if I've made any mistakes in this...
The chip in question is SC174, selected for its up to 4A output, and up to 95% of Vin voltage. As well as being able to run from a 3.7 cell.
The Vouts I'm trying to get are the
1.25V3.1A
2.5V0.1A
3.5V0.1A
needed for ps2.
Attached is the documentation, an image of my diagram, and an image of their diagram. Please let me know if there's anything else you need. Or if I've made any mistakes in this...
