Post by thread:[EE]: 200mA 78L05

Hi folks, Anyone offhand no the part number for the 200mA version of the 78L05? This is a 3-pin 5V reg in a to-92 pack. I think "Z" figures in the part number if I remember correctly. A source of this reg would also be appreciated. Thanks for any help. Regards, Jim Robertson NEWFOUND ELECTRONICS Email: spam_OUTnewfoundTakeThisOuTpipeline.com.au http://www.new-elect.com MPLAB compatible PIC programmers. -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

>Anyone offhand no the part number for the 200mA version of the 78L05? >This is a 3-pin 5V reg in a to-92 pack. I think "Z" figures in the >part number if I remember correctly. A source of this reg would also >be appreciated. Thanks for any help. You know - the problem is the power dissipation. TO92 won't dissipate more than 500mW, so it's on the edge with the minimum +7,5V input voltage and 0,2A current. ZETEX have E-line (like TO92) package which can dissipate 1W and probably this part is their. Cheers Tsvetan --- PCB prototypes for $26 at http://run.to/pcb -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

On Tue, 8 Aug 2000, Jim Robertson wrote: > Anyone offhand no the part number for the 200mA version of the 78L05? Yes, that would be ZR78L05C. Digi-Key sells these. ----------------------------------------------------------------------- David Snyder Hale .....davidKILLspam@spam@isi.mtwilson.edu Mount Wilson Observatory (626) 568-0304 http://isi.mtwilson.edu ----------------------------------------------------------------------- -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

Jim.... I like Micrel's part # MIC29201. Works great for me at 200 ma and is SMT right onto the board. Found I could place the flat portion right on the PCB, leave 2 square inches of copper and it does not get hot to the touch! My HC12 circuit is drawing about 130 ma. The 29201 is a low drop out regulator; that is, the input can get very close to the output in voltage before output starts to drop. Phil Anderson On Monday, August 07, 2000 12:13 PM, David D Snyder Hale [SMTP:davidKILLspamISI9.MTWILSON.EDU] wrote: {Quote hidden}> On Tue, 8 Aug 2000, Jim Robertson wrote: > > > Anyone offhand no the part number for the 200mA version of the 78L05? > > Yes, that would be ZR78L05C. Digi-Key sells these. > > > ----------------------------------------------------------------------- > David Snyder Hale .....davidKILLspam.....isi.mtwilson.edu > > Mount Wilson Observatory > (626) 568-0304 http://isi.mtwilson.edu > ----------------------------------------------------------------------- > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

Take a look at the datasheet first. For example, Vin absolute max is 18V unlike the generic 7805 which will take 32V. I got caught by this once when I used the part to supply a few milliamps from a 24V rail. Gerry Cox Weymouth Dorset. David D Snyder Hale To: EraseMEPICLISTspam_OUTTakeThisOuTMITVMA.MIT.EDU <davidspam_OUTISI9.MTW cc: ILSON.EDU> Subject: Re: [EE]: 200mA 78L05 Sent by: pic microcontroller discussion list <PICLIST@MITVMA .MIT.EDU> 07/08/00 18:12 Please respond to pic microcontroller discussion list On Tue, 8 Aug 2000, Jim Robertson wrote: > Anyone offhand no the part number for the 200mA version of the 78L05? Yes, that would be ZR78L05C. Digi-Key sells these. ----------------------------------------------------------------------- David Snyder Hale @spam@davidKILLspamisi.mtwilson.edu Mount Wilson Observatory (626) 568-0304 http://isi.mtwilson.edu ----------------------------------------------------------------------- -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.

One way to use the 78L05 on higher voltage is to use a zenner to drop the voltage to a better value. a 15v zenner from a 24volt supply means the bulk of voltage is droped by the zenner. just remember about the dropout voltage Regards Art {Original Message removed}

At 08:34 AM 8/8/00 +0100, you wrote: >Take a look at the datasheet first. For example, Vin absolute max is 18V >unlike the generic 7805 which will take 32V. I got caught by this once when >I used the part to supply a few milliamps from a 24V rail. >Gerry Cox I like the 78M05, which is available in the TO-263 SMT package, has the higher input voltage spec and much better line and load regulation than the 78L05. The 78L05 doesn't even save much, if anything, on quiescent current, it's still in the 4mA range. Best regards, =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Spehro Pefhany --"it's the network..." "The Journey is the reward" KILLspamspeffKILLspaminterlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com Contributions invited->The AVR-gcc FAQ is at: http://www.bluecollarlinux.com =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.