UDQ2540B

The UDQ2540B has the following features including 1.8 A Continuous Output Current;Output Voltage to 50 V;TTL and 5 V CMOS Compatible Inputs;Efficient Input/output Pinning;Integral Transient-Suppression Diodes;Replaces L6221 A.

Combining AND logic gates and inverting high-current bipolar outputs, the UDQ2540B quad Darlington power driver provides interface between low-level signal-processing circuits and power loads totaling 360 W. Each of the four independent outputs can sink up to 1.8 A in the ON state with peak inrush currents to 2.5 A. The four power outputs are each comprised of an open-collector Darlington driver and an internal flyback/clamp diode for switching inductive leads. They feature a minimum breakdown and sustaining voltage of 50 V. The logic inputs are compatible with TTL and 5 V CMOS logic systems.Typical applications include print heads, relays, solenoids, and do stepping motors. The UDQ2540B can also be used to drive high-current incandescent lamps, LEDS, and heaters. A similar device,specifically intended for driving a unipolar stepper motor in the two-phase drive format, is the UDQ2544B.Representative electrical characteristics (at an ambient temperature of +25) for the commercial type UDN2540B are shown in Section 3. Complete, detailed technical information on the UDQ2540B is available on request.The UDQ2540B is supplied in a 16-pin batwing power DIP. The batwing construction provides for maximum package power dissipation in a standard DIP construction. At 25, and with only 1 sq. in. of copper foil at the ground tabs, the package is capable of safely dissipating 3.8 W.

The information given herein, including the specifications and dimensions, is subject to change without prior notice to improve product characteristics. Before ordering, purchasers are advised to contact the Sensitron Semiconductor sales department for the latest version of the datasheet(s).In cases where extremely high reliability is required (such as use in nuclear power control, aerospace and aviation, traffic equipment,medical equipment, and safety equipment), safety should be ensured by using semiconductor devices that feature assured safety or by means of users' fail-safe precautions or other arrangement.