Will biasing the tlvh431 for 100uA degrade any of its performance? The datasheet doesn't list any performance parameters for the min bias current other then impedance. It's being used in a feedback loop (opto-431) in a 10.5W offline flyback.
The reason I ask is that I can get 25 TLVH431IDBZR (1.5%) in a
3-SOT-23 case for $0.3570 about half the price of The TL431 (1%) I'm using now. If I could reduce the current consumption by a factor of ten that would be a bonus.Has anyone used the TLVH431?
The data sheet implies that 100uA is twice the "breakover" current. But the only way you can know for sure is to test them all :-(
...Jim Thompson
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No, too expensive for my taste. Can't you use the TLV431?
Digikey 296-1348-1-ND, comes in 1%.
-- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
I ordered 25 TLVH431IDBZR at $0.357. That's the best price I could find. It's just small quantity Joerg. If I was purchaseing semiconductors' in the 1000's quantity I would go right to TI.
The TLVH431IDBZR is good to 20V,100uA bias current (max). I only have
7 flybacks I might swap in the TLVH431IDBZR in place of the TL431A. The rest I'm sure I could find some use for.Thanks
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