OT: uln 2003
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Posts: 46,084
Does anyone know of a pin-for-pin direct replacement for the uln 2003
that can handle more current than the 2003 can?
that can handle more current than the 2003 can?
Comments
Sid
package is kind of unique to the ULN2000 series. These parts seemed to gain
popularity back in the 7 pin dot matrix printer days. You might want to
look at the Allegro parts. They will handle up to 500mA.
http://www.allegromicro.com/sf/2003/index.htm
Looks like they may be willing to sample some parts. If not, Newark Elec.
good luck,
Mike
At 08:52 PM 1/17/2001 -0500, you wrote:
>Does anyone know of a pin-for-pin direct replacement for the uln 2003
>that can handle more current than the 2003 can?
_________________________________
Mike Walsh
walsh@i...
lot to do with the power (heat) dissipation of the 16 DIP package.
If you are not using all 7 darlington transistors, you can parallel them for
higher current .
Or, you can hand build an plug in array using Zetex ZTX605's or similar.
Go read Scott Edward's Stamp Application #6 titles "Silicon Steroids for the
Stamp Help Your Projects Heft Big Loads". You can find it and other great
applications at:
http://www.nutsvolts.com/stmpindx.htm
If you want to give up the "pin-for-pin" need, Toshiba makes a four channel
darlington driver good for 1.5 amps., in a 16 DIP. The TD62064AP (sink), get
it from Digikey $1.47.
Jim Howard
>
> From: agarb@j...
> Reply To: basicstamps@egroups.com
> Sent: Wednesday, January 17, 2001 5:52 pm
> To: basicstamps@egroups.com
> Subject: [noparse][[/noparse]basicstamps] OT: uln 2003
>
> Does anyone know of a pin-for-pin direct replacement for the uln 2003
> that can handle more current than the 2003 can?
>
>
>
product for us that uses the ULN 2003. I've recently inherited some
projects dealing with this device and have determined that the ULN 2003
is being used in a manner not in harmony with the TI datasheet --
basically, we are trying to pull as many as three outputs to ground
simultaneously. The scary part is that each device draws nearly 400 mA.
This = BAD. Instead of trying to cram buffer relays into an already
crowded enclosure, I was hoping to find a suitable replacement driver,
but have not even come close. Oh well, I guess I'll be going for the
buffers.
On Thu, 18 Jan 2001 12:20:29 EST Newzed@a... writes:
> If you need more than 500ma why not use a pc relay?
>
> Sid
>
>
>
the IRL530? This device is in a TO220 case, can sink up to 15 amps, and
operates from a 5 volt logic signal. If the load is inductive, you will
need a catch diode.
Ray McArthur
Original Message
From: <agarb@j...>
To: <basicstamps@egroups.com>
Sent: Friday, January 19, 2001 7:04 PM
Subject: Re: [noparse][[/noparse]basicstamps] OT: uln 2003
> Well, the company I work for (before I started) had a guy design a
> product for us that uses the ULN 2003. I've recently inherited some
> projects dealing with this device and have determined that the ULN 2003
> is being used in a manner not in harmony with the TI datasheet --
> basically, we are trying to pull as many as three outputs to ground
> simultaneously. The scary part is that each device draws nearly 400 mA.
> This = BAD. Instead of trying to cram buffer relays into an already
> crowded enclosure, I was hoping to find a suitable replacement driver,
> but have not even come close. Oh well, I guess I'll be going for the
> buffers.
>
> On Thu, 18 Jan 2001 12:20:29 EST Newzed@a... writes:
> > If you need more than 500ma why not use a pc relay?
> >
> > Sid
> >
> >
> >
>
>
>
back in the days when computers were steam powered we had a trick of adding
more memory by piggybacking extra chips on top of one another.
could this method be used to beef up the 300ma limit of the 2003.
ian.
Original Message
From: agarb@j... <agarb@j...>
To: basicstamps@egroups.com <basicstamps@egroups.com>
Date: Saturday, January 20, 2001 2:17 PM
Subject: Re: [noparse][[/noparse]basicstamps] OT: uln 2003
>Well, the company I work for (before I started) had a guy design a
>product for us that uses the ULN 2003. I've recently inherited some
>projects dealing with this device and have determined that the ULN 2003
>is being used in a manner not in harmony with the TI datasheet --
>basically, we are trying to pull as many as three outputs to ground
>simultaneously. The scary part is that each device draws nearly 400 mA.
>This = BAD. Instead of trying to cram buffer relays into an already
>crowded enclosure, I was hoping to find a suitable replacement driver,
>but have not even come close. Oh well, I guess I'll be going for the
>buffers.
>
>On Thu, 18 Jan 2001 12:20:29 EST Newzed@a... writes:
>> If you need more than 500ma why not use a pc relay?
>>
>> Sid
>>
>>
>>
>
>
>
>
I'm using this hexfet as a motor controller.....shou I have a diode across
the motor? motor draws 10 amps on startup.
Steve Chlupsa
SMC Enterprises
270-522-9376
Original Message
From: Ray McArthur <rjmca@u...>
To: <basicstamps@egroups.com>
Sent: Friday, January 19, 2001 8:10 PM
Subject: Re: [noparse][[/noparse]basicstamps] OT: uln 2003
> If you only have to sink current, what about about a logic level MOSFET
like
> the IRL530? This device is in a TO220 case, can sink up to 15 amps, and
> operates from a 5 volt logic signal. If the load is inductive, you will
> need a catch diode.
>
> Ray McArthur
>
>
Original Message
> From: <agarb@j...>
> To: <basicstamps@egroups.com>
> Sent: Friday, January 19, 2001 7:04 PM
> Subject: Re: [noparse][[/noparse]basicstamps] OT: uln 2003
>
>
> > Well, the company I work for (before I started) had a guy design a
> > product for us that uses the ULN 2003. I've recently inherited some
> > projects dealing with this device and have determined that the ULN 2003
> > is being used in a manner not in harmony with the TI datasheet --
> > basically, we are trying to pull as many as three outputs to ground
> > simultaneously. The scary part is that each device draws nearly 400 mA.
> > This = BAD. Instead of trying to cram buffer relays into an already
> > crowded enclosure, I was hoping to find a suitable replacement driver,
> > but have not even come close. Oh well, I guess I'll be going for the
> > buffers.
> >
> > On Thu, 18 Jan 2001 12:20:29 EST Newzed@a... writes:
> > > If you need more than 500ma why not use a pc relay?
> > >
> > > Sid
> > >
> > >
> > >
> >
> >
> >
>
>
>
>
>
rating > Vcc and current rating > max motor current.
Regards,
Ray McArthur
Original Message
From: Steve Chlupsa <schlupsa@k...>
To: <basicstamps@egroups.com>
Sent: Sunday, January 21, 2001 12:48 PM
Subject: Re: [noparse][[/noparse]basicstamps] OT: uln 2003
> Ray:
> I'm using this hexfet as a motor controller.....shou I have a diode across
> the motor? motor draws 10 amps on startup.
>
> Steve Chlupsa
> SMC Enterprises
> 270-522-9376
>
Original Message
> From: Ray McArthur <rjmca@u...>
> To: <basicstamps@egroups.com>
> Sent: Friday, January 19, 2001 8:10 PM
> Subject: Re: [noparse][[/noparse]basicstamps] OT: uln 2003
>
>
> > If you only have to sink current, what about about a logic level MOSFET
> like
> > the IRL530? This device is in a TO220 case, can sink up to 15 amps, and
> > operates from a 5 volt logic signal. If the load is inductive, you will
> > need a catch diode.