Darlington transistor arrays

27 August 2014 Power Electronics / Power Management

Diodes Incorporated has introduced what it claims are better performing, lower-cost versions of the industry-standard ULN2000 series of Darlington arrays. The devices integrate seven open-collector Darlington transistors, each capable of producing an output current of 500 mA, from outputs rated at 50 V.

With clamp diodes included, the arrays directly drive a variety of inductive loads, including relays and stepper motors in home appliance and industrial products. Three variants are available to cover compatibility with all common logic families: ULN2002A (14 V to 25 V PMOS), ULN2003A (5 V TTL, CMOS) and ULN2004A (6 V to 15 V CMOS, PMOS).

As drop-in replacements, all parts are provided in the popular small outline SO-16 package, with inputs and outputs of all Darlingtons pinned out in direct opposition to simplify PCB layouts. The array’s -40°C to +105°C operating temperature suits the requirements of industrial system design.

For more information contact Arnold Perumal, Avnet Kopp, +27 (0)11 319 8600, arnold.perumal@avnet.eu, www.avnet.co.za

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