need design review.
Posted by: nisus
on
Dear Sir ,
we need your help for review the attched design .
we are making low cost led driver using tny278PN IC .
please let us konw if any thing is wrong .
hope for favable reply .
with regards ,
nisus
Files
| Attachment | サイズ |
|---|---|
| TinySwitch-III_PIDesign3.uds | 219 KB |
コメント
Dear Sir,
i have power up the circuit , but we are getting 440mA current in output but we need 350mA .
please let me konw how we can control the current .
also after 5 sec operation leds are start blinking .
please help us .
with regards ,
smit .
Pls attach the schematic of your board w values
I dont see any possible problem except that you need to check the worst case VDS of the device once you've powered up the unit.