Relay driver optimizes inductive load control
Providing a rugged interface between standard logic and 3 to 6-V dc inductive loads, the DRDC3105 relay driver is designed to handle relays, solenoids, incandescent lamps and small motors in a wide range of applications. From a 5-V supply rail, the part has the capability to drive coils rated at up to 2.5 W.
The relay driver is offered in single and dual driver configurations, housed respectively in SOT23 and SOT26 packages, and can replace between 3 and 6 discrete components. With a Zener diode included across the device’s bipolar transistor output, the need for an external free-wheeling diode is removed, and by clamping at 6.6 V the Zener also sinks inductive currents to ground, thereby reducing noise due to EMI. (ea/10,000;$0.09 for the single driver package;$0.15 for the dual driver package available now)
By Christina Nickolas
Diodes , Plano , TX , United States
Glen Wynn 972-385-6292
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