UDN2544
UDN2544 is QUAD DARLINGTON POWER DRIVER manufactured by Allegro MicroSystems.
feature a minimum breakdown and sustaining voltage of 50 V. The logic inputs are patible with TTL and 5 V CMOS logic systems. This device is particularly well-suited for unipolar stepper motor drive applications. With plementary control inputs and an activelow ENABLE, the UDN2544B makes it easy to implement full stepping of a stepper motor with only two microcontroller/microprocessor control lines. Other typical applications include relay or solenoid driving and incandescent or LED lamp driving. The UDN2544B 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°C, and with only 1 sq. in. of copper foil at the ground tabs, the package is capable of safely dissipating 3.8 W.
Data Sheet 29317.6-
OUT4 K OUT3 GROUND GROUND OUT2 K OUT1
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
IN 4 IN3 ENABLE GROUND GROUND V CC IN 2 IN 1
Dwg. PP-017A
FEATURES
I 1.8 A Continuous Output Current I Output Voltage to 50 V I Inputs Configured for Unipolar Stepper Motors I Active-Low Output Enable
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
I TTL and 5 V CMOS patible Inputs I Integral Transient-Suppression Diodes
Always order by plete part number: UDN2544B .
2544 QUAD DARLINGTON POWER DRIVER
ELECTRICAL CHARACTERISTICS at TA = +25°C, TJ ≤ 150°C, VCC = 4.75 V to 5.25 V.
Limits Characteristic Output Leakage Current Output Sustaining Voltage Output Saturation Voltage...
