254264.991V9546, 2544, 25445 Selling Leads, Datasheet
MFG:ST Package Cooled:QFP D/C:06+
254264.991V9546, 2544, 25445 Datasheet download
Part Number: 254264.991V9546
MFG: ST
Package Cooled: QFP
D/C: 06+
254264.991V9546, 2544, 25445
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Info of 254264.991V9546
Info of 2544
Info of 25445
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About 2540
PDF/DataSheet Download
Datasheet: 2540
File Size: 146614 KB
Manufacturer: ALLEGRO [Allegro MicroSystems]
Download : Click here to Download
About 2544
PDF/DataSheet Download
Datasheet: 2544
File Size: 116759 KB
Manufacturer: ALLEGRO [Allegro MicroSystems]
Download : Click here to Download
About 2540
PDF/DataSheet Download
Datasheet: 2540
File Size: 146614 KB
Manufacturer: ALLEGRO [Allegro MicroSystems]
Download : Click here to Download
2544 General Description
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. They feature a minimum breakdown and sustaining voltage of 50 V. The logic inputs are compatible with TTL and 5 V CMOS logic systems.
This device is particularly well-suited for unipolar stepper motor drive applications. With complementary 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.
This device is particularly well-suited for unipolar stepper motor drive applications. With complementary 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.
2544 Maximum Ratings
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
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
2544 Features
1.8 A Continuous Output Current
Output Voltage to 50 V
Inputs Configured for Unipolar Stepper Motors
Active-Low Output Enable
TTL and 5 V CMOS Compatible Inputs
Integral Transient-Suppression Diodes
Output Voltage to 50 V
Inputs Configured for Unipolar Stepper Motors
Active-Low Output Enable
TTL and 5 V CMOS Compatible Inputs
Integral Transient-Suppression Diodes
2544 Connection Diagram
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