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Part: A2540
Category:
Logic
Description:
Company: Allegro Micro Systems, Inc.
Datasheet: Download A2540 datasheet File size : 192 kB
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Datasheet text preview:
2540
UDN2540B (DIP)
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
QUAD DARLINGTON POWER DRIVER
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 highcurrent incandescent lamps, LEDS, and heaters.
Dwg. PP-017-2
ABSOLUTE MAXIMUM RATINGS
at TA = 25°C
A L
T S
cc a
The UDN2540B is supplied in a 16-pin batwing power DIP; the A2540SLB is supplied in a 20-lead batwing power SOIC for surfacemount applications. The batwing construction provides for maximum package power dissipation in a standard construction. At 25°C, and with pcb copper foil heat dissipators at the ground tabs, either package is capable of safely dissipating more than 2 W.
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Data Sheet 29317D
FEATURES
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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
--
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1.8 A Continuous Output Current Output Voltage to 50 V TTL and 5 V CMOS Compatible Inputs Efficient Input/Output Pinning Integral Transient-Suppression Diodes Replaces L6221A and L6221CD
Always order by complete part number: Part Number Package UDN2540B 16-pin batwing DIP A2540SLB 20-lead batwing SOIC
2540 QUAD DARLINGTON POWER DRIVER
A2540SLB (SOIC)
OUT4 K NO CONNECTION OUT3 GROUND GROUND OUT 2 NO CONNECTION K OUT1 1 2 3 4 5 6 7 8 9 10 NC V CC NC NC NC 20 19 18 17 16 15 14 13 12 11 IN 4 IN3 NO CONNECTION ENABLE GROUND GROUND SUPPLY NO CONNECTION IN 2 IN 1
ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS
5
RJT = 6.0°C/W
4
3
SUFFIX 'B', R JA = 43°C/W
2
1
SUFFIX 'LB', R JA = 87°C/W
0 25 50 75 100 TEMPERATURE IN °C 125 15 0
Dwg. PP-017-3
Dwg. GP-049-3A
RJA is measured on typical two-sided PCB with minimal copper ground area. For the SOIC, adding 3.57 in2 copper ground area will reduce the thermal resistance to 52°C/W (2.4 W allowable package power dissipation at 25°C). See Application Note 29501.5, Improving Batwing Power Dissipation.
TRUTH TABLE
ENABLE H -- L X = Don't care. INN H L X OUTN ON OFF OFF
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1986, 2003 Allegro MicroSystems, Inc.
2540 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 Symbol IC E X Test Conditions VOUT = 50 V, VIN = 0.8 V, VEN = 2.4 V VOUT = 50 V, VIN = 2.4 V, VEN = 0.8 V Output Sustaining Voltage Output Saturation Voltage VCE(sus) VCE(SAT) IOUT = 1.8 A, L = 3.0 mH IOUT = 600 mA, VIN = VEN = 2.4 V IOUT = 1.0 A, VIN = VEN = 2.4 V IOUT = 1.8 A, VIN = VEN = 2.4 V Input Voltage Logic 1 Logic 0 Input Current Logic 1 Logic 0 Total Supply Current IC C VIN(1) or VEN(1) VlN(0) or VEN(0) VIN(1) or VEN(1) = 2.4 V VlN(0) or VEN(0) = 0.8 V VIN* = VEN = 2.4 V, VCC = 5.0 V, Outputs Open VIN* = VEN = 0.8 V, VCC = 5.0 V Clamp Diode Forward Voltage VF IF = 1.0 A IF = 1.8 A Clamp Diode Leakage Current IR VR = 50 V -- -- -- -- 0.4 1.3 1.6 <1.0 2.0 1.6 2.0 100 mA V V µA Min. -- -- 50 -- -- -- 2.4 -- -- -- -- Typ. <1.0 <1.0 -- 0.9 1.0 1.3 -- -- -- -- 14 Max. 100 100 -- 1.0 1.2 1.6 -- 0.8 10 -100 20 Units µA µA V V V V V V µA µA mA
Typical Data is for design information only. Negative current is defined as coming out of (sourcing) the specified terminal. As used here, -100 is defined as greater than +10 (absolute magnitude convention) and the minimum is implicitly zero. *All inputs simultaneously, all other tests are performed with each input tested separately.
www.allegromicro.com
2540 QUAD DARLINGTON POWER DRIVER
TYPICAL APPLICATION
(QUAD RELAY DRIVER WITH ZENER FLYBACK)
+28 V 1 2 3 4 K2 15V 5 6 7 8 16 15 14 13 12 11 10 9 +5V IN 2 IN 1
Dwg. EP-016
K4 K3
IN 4 IN 3 ENABLE
K1
APPLICATIONS INFORMATION
A typical application is shown for driving four high-current relays, solenoids, or print heads. A Zener diode is used to increase the flyback voltage, providing a much faster inductive load turn-off current decay, resulting in faster dropout (reduced relay contact arcing), and improved performance. The maximum Zener voltage, plus the load supply voltage, plus the flyback diode forward voltage must not exceed the device's rated sustaining voltage. With external control circuitry, the ENABLE input can be used for chopper (PWM) applications. If the ENABLE input is not used, it should be tied high. All inputs will float high if open circuited.
VCC + VZ + V F
OUTPUT VOLTAGE
V CC
V CC + V F
V CE(SAT) I OUT ZENER CLAMP DIODE CLAMP
OUTPUT CURRENT
I CEX
Dwg. WP-001
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
2540 QUAD DARLINGTON POWER DRIVER
Dimensions in Inches (controlling dimensions)
0.020 0.008
UDN2540B
16
NOTE 4
9
0.430 0.280 0.240
MAX
0.300
BSC
1 0.070 0.045
0.100 0.775 0.735
BSC
8 0.005
MIN
0.210
MAX
0.015
MIN
0.150 0.115 0.022 0.014
Dwg. MA-001-17A in
Dimensions in Millimeters (for reference only)
16
NOTE 4
9
0.508 0.204
10.92 7.11 6.10
MAX
7.62
BSC
1 1.77 1.15
2.54 19.68 18.67
BSC
8 0.13
MIN
5.33
MAX
0.39
MIN
3.81 2.93 0.558 0.356
Dwg. MA-001-17A mm
NOTES: 1. Leads 1, 8, 9, and 16 may be half leads at vendor's option. 2. Lead thickness is measured at seating plane or below. 3. Lead spacing tolerance is non-cumulative. 4. Webbed lead frame. Leads indicated are internally one piece. 5. Exact body and lead configuration at vendor's option within limits shown.
www.allegromicro.com
Others parts begin by a2
A2-1 A2-2 A2-3 A2-4
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