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From: firstname.lastname@example.org (Bob Wilson)
Subject: Re: Lowest voltage drop diode
Date: Thu, 26 Sep 2002 02:45:57 -0000
Organization: Your Organization
X-Newsreader: WinVN 0.99.9 (Released Version) (x86 32bit)
In article ,
>"Bob Wilson" wrote in message
>> In article ,
>> email@example.com says...
>> >"oguz" wrote in message
>> >> I am looking for a very low voltage drop diode ( or equivalent circuit
>> >> ) that has a forward voltage drop of 0.2 Volts or less. Maximum
>> >> current to be conducted will be less than 5mA.
>> >> Currently, I am using a BAT85 Schottky diode from Philips. This has a
>> >> forward voltage drop of 0.3-0.4 Volts maximum. I have looked at some
>> >> Germanium diodes that have a drop of 0.3 Volts.
>> >> Is there a way to do this with a MOSFET or Transistor ?
>> >> Is a one-way conducting device of 0.2 Volt drop or less achievable by
>> >> any means ?
>> >Is this for reverse voltage protection? If so you can use a P-channel
>> >enhancement mode MOSFET wired 'backwards', i.e. gate to 0V, drain to +ve
>> >supply and source to load.
>> ....providing your Vin is less than the gate breakdown voltage of the
>Indeed, or use a resistor divider on the gate with zener protection if not.
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