UDN2987x-6: DABIC-5 8-Channel Source Driver with Overcurrent Protection

Providing overcurrent protection for each of its eight sourcing outputs, the UDN2987LW-6 driver is used as an interface between standard low-level logic and relays, motors, solenoids, LEDs, and incandescent lamps. This device includes thermal shutdown and output transient protection/clamp diodes for use with sustaining voltages to 35 V.

In this driver, each channel includes a latch to turn off that channel if the maximum channel current is exceeded. All channels are disabled if the thermal shutdown is activated. A common FAULT output is used to indicate either chip thermal shutdown or any overcurrent condition. All outputs are enabled by pulling the common OE/R input high. When OE/R is low, all outputs are inhibited and the eight latches are reset. The OE/R function can be especially important during power-up, in preventing floating inputs from turning on the outputs.

Under normal operating conditions, each of eight outputs will source in excess of 100 mA continuously at an ambient temperature of 25°C and a supply of 35 V. The overcurrent fault circuit will protect the device from short-circuits to ground with supply voltages of up to 30 V.


Astrorep Inc. (Allegro and Sanken Semiconductors, Sanken Power Supplies)
141 John Street, Suite 300
Babylon, NY 11702
Phone: (631)422-2500
Fax: (631)422-2504
Web: www.astrorepinc.com
Email: donna.tweedy@astrorepinc.com

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  • NewsNews
  • 4.75 to 35 V driver supply voltage
  • Output enable-disable (OE/R)
  • 350 mA output source current
  • Overcurrent protected
  • Internal ground clamp diodes
  • Output Breakdown Voltage 35 V minimum
  • TTL, DTL, PMOS, or CMOS compatible inputs
  • Internal Thermal Shutdown (TSD)


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Functional Block Diagram

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
UDN2987A-6-T 20-lead DIP -20°C to 85°C Yes View Data Discontinued Contact your
local sales rep
Check Stock
UDN2987LW-6-T 20-lead SOIC -20°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
UDN2987LWTR-6-T 20-lead SOIC -20°C to 85°C Yes View Data Contact your
local sales rep
Check Stock

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