parallel output pins of uln2803

[archiecles123]

can i parallel 4 output pins of uln2803 so that it can have current greater than 1A? thanks

 

[Reloadron]

The ULN2803A is a high-voltage, high-current
Darlington transistor array. The device consists of
eight npn Darlington pairs that feature
high-voltage outputs with common-cathode
clamp diodes for switching inductive loads. The
collector-current rating of each Darlington pair is
500 mA. The Darlington pairs may be connected
in parallel for higher current capability.

I believe that makes it pretty clear that you can. This is the data sheet.

Ron

 

[Boncuk]

Observe the maximum power dissipation of the package.

It's 2.1W! (Source: datasheet ULN2803 Allegromicro)

Boncuk

 

[ronsimpson]

The maximum current per IC is 2.5 amps!

Total substrate-terminal current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −2.5 A

 

[Boncuk]

The maximum current per IC is 2.5 amps!

That won't change the max power dissipation, does it?

Boncuk