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Allegro MicroSystems - QUAD DARLINGTON POWER DRIVER

Numéro de référence UDN2540
Description QUAD DARLINGTON POWER DRIVER
Fabricant Allegro MicroSystems 
Logo Allegro MicroSystems 





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UDN2540 fiche technique
2540
QUAD DARLINGTON
POWER DRIVER
OUT4 1
K2
OUT3 3
GROUND 4
GROUND 5
OUT2 6
K7
OUT1 8
UDN2540B
16 IN4
15 IN3
14 ENABLE
13 GROUND
12 GROUND
11 V CC
10 IN 2
9 IN 1
Dwg. PP-017-2
Combining AND logic gates and inverting high-current bipolar
outputs, the UDN2540B and A2540SLB quad Darlington power drivers
provide 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
dc stepping motors. These drivers 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 UDN2544B.
The UDN2540B is supplied in a 16-pin batwing power DIP; the
A2540SLB is supplied in a 20-lead batwing power SOIC for surface-
mount applications. The batwing construction provides for maximum
package power dissipation in a standard construction. At 25°C, and
with only 1 sq. in. of copper foil at the ground tabs, either package is
capable of safely dissipating more than 2 W.
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
FEATURES
I 1.8 A Continuous Output Current
I Output Voltage to 50 V
I TTL and 5 V CMOS Compatible Inputs
I Efficient Input/Output Pinning
I Integral Transient-Suppression Diodes
I Replaces L6221A and L6221CD
Always order by complete part number:
Part Number Package
UDN2540B
16-pin batwing DIP
A2540SLB
20-lead batwing SOIC

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