| Electronics > Beginners |
| Negative version of LP2951 LDO |
| (1/8) > >> |
| ZeroResistance:
I'm looking for a negative output LDO, 100ma. I found the positive version LP2951, however I'm unable to locate its negative version. Like the LM317 has a LM337 version, I was expecting the same for the LP2951. Am I missing something here or the negative version just does not exist for the LP2951? |
| Siwastaja:
Most regulators on the market don't have a "closely related" "negative version" with a similar part number. Positive regulators are much more widely needed, thus a larger selection exists. Just do a parametric search on your supplier to find the negative voltage regulator you need, doesn't need to be closely related to any positive regulator you are using in the same circuit. |
| Andreas:
LT1964 if you can live with -20V maximum input voltage with best regards Andreas |
| RES:
LT1175 ? -20V (-25V abs. max.), adj. Vout, 200-800mA, sense, current limit pins, shdn, SOIC8, 45uA op. curr., 10uA shdn curr. https://www.analog.com/media/en/technical-documentation/data-sheets/1175ff.pdf |
| ZeroResistance:
Thanks to all the suggestions. Price also is an issue. The LP2951 => $0.5 LT1964 => $3.6 LT1175 => $5.8 I was looking for something in sub-dollar range! |
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