UDN2543B Datasheet | Allegro MicroSystems

Description and Applications for further information. PROTECTED QUAD POWER DRIVER Providing interface between low-level logic and power loads to 100 W, the UDx2543B and UDx2543EB quad power drivers bine AND logic gates and high-current bipolar outputs. Each of the four independent outputs can sink up to 700 m A in the ON state. The outputs have a minimum breakdown voltage (load dump) of 60 V and a sustaining voltage of 35 V. The inputs are patible with most TTL, DTL, LSTTL, and 5 V CMOS and PMOS logic systems. Over-current protection has been designed into each channel of the UDx2543B/EB and typically occurs at 1 A. It protects any one channel from output short circuits with supply voltages up to 25 V. When the maximum output current is reached, that output stage is driven linearly. If the over-current condition continues, that output’s thermal limiting will operate, limiting that output’s power dissipation to approximately 2.4 W. The outputs also include diodes for voltage clamping with inductive loads such as relays, solenoids, or dc stepper motors. These devices are supplied in a 16-pin power DIP of batwing construction (suffix ‘B’) to provide for maximum package power dissipation. They are also available in a 28-lead PLCC (suffix ‘EB’) for surface-mount applications. All devices are rated for continuous operation over the temperature range of -20°C to +85°C (UDN2543B/ EB) or for use in automotive applications over an extended temperature range as the UDQ2543B/EB. FEATURES I 700 m A Output Current per Channel I Low Output-Saturation Voltage I Integral Output Transient-Suppression Diodes I TTL, CMOS, PMOS, NMOS patible Inputs I Independent Over-Current Protection for Each Output Always order by plete part number: Part Number Package Operating Temperature 16-Pin DIP -20°C to +85°C UDN2543EB 28-Lead PLCC -20°C to +85°C UDQ2543B 16-Pin DIP -40°C to +85°C UDQ2543EB 28-Lead PLCC -40°C to +85°C 2543 PROTECTED QUAD POWER DRIVER ENABLE IN...