Allegro MicroSystems 2544
QUAD DARLINGTON POWER DRIVER
ABSOLUTE MAXIMUM RATINGS
at TA = 25°C Output Voltage, VOUT ............................. 50 V Output Current, IOUT (Peak) ........................................... 2.5 A (Continuous) ................................. 1.8 A Logic Supply Voltage, VCC .................... 7.0 V Input Voltage, VIN .................................. 7.0 V Package Power Dissipation, PD ......................................... See Graph Operating Temperature Range, TA .................................. -20°C to +85°C Storage Temperature Range, TS ................................ -55°C to +150°C Combining logic gates and high-current bipolar outputs, the UDN2544B quad Darlington power driver provides an interface between low-level logic circuitry and high-power loads. Each of the four 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 opencollector Darlington driver and an internal flyback/clamp diode for switching inductive loads.