DS DS – High Current/voltage Darlington Driver, Package: Soic Narrow , Pin Nb= The DS is comprised of seven high voltage, high current. The DS DS DS are comprised of seven high voltage high current NPN Darlington transistor pairs All units feature common emitter open collector. DS datasheet, DS pdf, DS data sheet, datasheet, data sheet, pdf, National Semiconductor, High Current/Voltage Darlington Driver.
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Quick Links Categories Recent Discussions. I’ll admit I don’t have much experiance dealing directly with transisters, but I thought I could handle this apparently simple device.
Alas, with a fair amount of shame, I admit defeat. This does not seem to be the case. I’m sure this is really simple and I am just being a dolt. When I switch the power on I get.
I need 24 volts and about mA to drive my DC Solinoid switch. Can I not get there with a 5v input? Here is the connection diagram from the data sheet: Here is a link to the data sheet: Comments 9 Comments sorted by Date Added Votes. Chris Savage Parallax Engineering Posts: Chris, thanks for the reply.
DS 데이터시트(PDF) – National Semiconductor (TI)
You and the handful of regulars on here that consistently help out are true American heros ds003 So far I’ve had no luck, even following the schematic at the link you posted. Here is what I have right now: GND terminal of the Solenoid is tied to the 24vdc return.
In this configuration, I get.
I also tried connecting the positive terminal of the external 24vdc power supply satasheet the DS common pin instead of VDD. In that configuration I get -3vdc on the ouput when VDD is switched on.
Ds2003 datasheet pdf
I guess I’m not understanding how this thing is supposed to work. Is the common pin supposed to be the supply voltage for the output pin? Or, does the input pin serve as both an enable and supply voltage?
Attached hopefully is a adtasheet. The Common pin datasheet the common pin for the protection diodes and should must!
They should normally be reversed biased and serve to protect the drivers from the reverse polarity pulse when the magnetic field around the solenoid coils collapses when the driver is turned off. I really appreciate the help guys.
I’ve tried every approach suggested here and then some, still the biggest or smallest output I could get was I’m tired and frustrated for today. Roger, With reference to your earlier post, only two connections are wrong: A high on the input, takes the corresponding ouput to GND. Tom Sisk Sisk Consulting Inc. Once again, thanks to everybody for the help. You guys are great! The problem turned out to be two-fold. When I first started messing with this circuit, I was switching the wrong lead, once I understood that this device was supposed to sink not source I re-wired but still wasn’t getting usable output.
Once I connected to the Vin on the development board about 15vdc things worked immediately. Thanks everyone for your patience and expertise. I need a beer now.
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