Re: 17 V linear voltage regulator

Mochuelo wrote:
On 15 Jul 2006 04:13:36 -0700, "PeterSmith1954@xxxxxxxxxxxxxx"
<PeterSmith1954@xxxxxxxxxxxxxx> wrote:


National's page for this device at:

http://www.national.com/pf/LP/LP2951.html

Cheers

PeteS


Thanks again to both of you. The ground pin current (approx 3 mA @ 60
mA) kills me. That's due to the PNP. I have to connect around 200
units in parallel, hanging on a 24 V bus, and I'm trying to minimize
the losses. I must say, I'm quite amazed that I cannot find one with a
PMOS pass transistor that works at these voltage levels.


Now I can be saying the biggest bull***t of my life:

what about the use of the schematic on the national page with the added pass mosfet ?
you should be able to lowering the ground current at desidered level augmenting the 2K resistor on OUT pin

a bit of overkill, the IC and an external MOS, but if you don't have other solutions ....
.

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