2540中文资料

QUAD DARLINGTONPOWER DRIVERCombining AND logic gates and inverting high-current bipolaroutputs, the UDN2540B and A2540SLB quad Darlington power drivers provide interface between low-level signal-processing circuits andpower 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.FEATURESI 1.8 A Continuous Output Current I Output Voltage to 50 VI TTL and 5 V CMOS Compatible Inputs I Efficient Input/Output PinningI Integral Transient-Suppression Diodes IReplaces L6221A and L6221CDData Sheet29317CAlways order by complete part number:Part Number Package UDN2540B 16-pin batwing DIP A2540SLB 20-lead batwing SOIC2540115 Northeast Cutoff, Box 15036Worcester, Massachusetts 01615-0036 (508) 853-********QUAD DARLINGTON POWER DRIVERTRUTH TABLEENABLEIN N OUT N H H ON —L OFF LXOFFX = Don’t care.ENABLE GROUND GROUND OUT 2KGROUNDGROUNDOUT 3OUT 4KOUT 1IN 1IN 2IN 4IN 3NOCONNECTION NOCONNECTIONDwg. PP-017-3NOCONNECTION NOCONNECTIONSUPPLY A2540SLB5075100125150510A L L O W A B L E P A C K A G E P O W E R D I S S I P A T I O N I N W A T T STEMPERATURE IN °C43225Dwg. GP-049-3Copyright © 1986, 1996 Allegro MicroSystems, Inc.2540 QUAD DARLINGTON POWER DRIVER LimitsCharacteristic Symbol Test Conditions Min.Typ.Max.Units Output Leakage Current I CEX V OUT = 50 V, V IN = 0.8 V, V EN = 2.4 V—<1.0100µAV OUT = 50 V, V IN = 2.4 V, V EN = 0.8 V—<1.0100µA Output Sustaining Voltage V CE(sus)I OUT = 1.8 A, L = 3.0 mH50——V Output Saturation Voltage V CE(SAT)I OUT = 600 mA, V IN = V EN = 2.4 V—0.9 1.0VI OUT = 1.0 A, V IN = V EN = 2.4 V— 1.0 1.2VI OUT = 1.8 A, V IN = V EN = 2.4 V— 1.3 1.6V Input Voltage Logic 1V IN(1) or V EN(1) 2.4——VLogic 0V lN(0) or V EN(0)——0.8V Input Current Logic 1V IN(1) or V EN(1) = 2.4 V——10µALogic 0V lN(0) or V EN(0) = 0.8 V——-100µA Total Supply Current I CC V IN* = V EN = 2.4 V, V CC = 5.0 V,—1420mAOutputs OpenV IN* = V EN = 0.8 V, V CC = 5.0 V—0.4 2.0mA Clamp Diode Forward Voltage V F I F = 1.0 A— 1.3 1.6VI F = 1.8 A— 1.6 2.0V Clamp Diode Leakage Current I R V R = 50 V—<1.0100µA 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.ELECTRICAL CHARACTERISTICS at T A = 25°C, T J≤ 150°C, V CC = 4.75 V to 5.25 V.115 Northeast Cutoff, Box 15036Worcester, Massachusetts 01615-0036 (508) 853-50002540QUAD DARLINGTON POWER DRIVERAPPLICATIONS INFORMATIONA typical application is shown for driving four high-current relays,solenoids, or print heads. A Zener diode is used to increase theflyback 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.Dwg. WP-001O U T P U TV O L T A G EO U T P U TC U R R E N TV CCV I I2540QUAD DARLINGTONPOWER DRIVERNOTES: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.Dimensions in Millimeters (for reference only)Dwg. MA-001-17A in18UDN2540BDimensions in Inches (controlling dimensions)Dwg. MA-001-17A mm1618115 Northeast Cutoff, Box 15036Worcester, Massachusetts 01615-0036 (508) 853-50002540QUAD DARLINGTON POWER DRIVERNOTES:1. Webbed lead frame. Leads 5, 6, 15, and 16 are internally one piece.2. Lead spacing tolerance is non-cumulative.3. Exact body and lead configuration at vendor ’s option within limits shown.Dwg. MA-008-21A mm1.27BSCNOTE 1NOTE 3A2540SLBDimensions in Inches (for reference only)Dwg. MA-008-21A inBSCNOTE 1NOTE 3Dimensions in Millimeters (controlling dimensions)2540 QUAD DARLINGTON POWER DRIVERThe products described here are manufactured under one or more U.S. patents or U.S. patents pending.Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the information being relied upon is current.Allegro products are not authorized for use as critical components in life-support devices or systems without express written approval.The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsi-bility for its use; nor for any infringement of patents or other rights of third parties which may result from its use.115 Northeast Cutoff, Box 15036Worcester, Massachusetts 01615-0036 (508) 853-50002540QUAD DARLINGTON POWER DRIVERPOWER SINK DRIVERSIN ORDER OF 1) OUTPUT CURRENT, 2) OUTPUT VOLTAGE, 3) NUMBER OF DRIVERSOutput Ratings *FeaturesSerial Latched DiodeInternalmAV#Input Drivers ClampOutputsProtectionPart Number†75178X X –constant current –62751716X X –constant current –627610020 8–––saturat e d –25953032X X –––58334032X X –saturated –583250 8addr e ssabl e d e cod e r/driv e r DMOS –6B25950 8–X –DMOS –6B27350 8X X –DMOS –6B59525050 8addr e ssabl e d e cod e r/driv e r DMOS –625950 8–X –DMOS –627350 8X X –DMOS –6595135 7––X ––700330045 1–Hall sensor/driver X –X 514050 7––X ––200350 8––X ––280350 8––X saturat e d –259660 4––X saturated X 255795 7––X ––202395 8––X ––282335050 4–X X ––580050 7––X ––200450 8––X ––280450 8–X X ––580150 8X X –––582150 8X X X ––584150 8addr e ssabl e d e cod e r/driv e r DMOS –6A25950 8X X –DMOS –6A59580 8X X –––582280 8X X X ––584295 7––X ––202495 8––X ––28244503028dual 4- to 14-lin e d e cod e r/driv e r ––681760060 4–––saturated X 254760 4––X saturated X 254970060 4––X saturated X 2543 and 255975050 8––X saturat e d –259790014 2–Hall sensor/driver X saturated X 362526 2–Hall sensor/driver X saturated X 3626100046 4stepper motor controller/driver MOS –7024 and 7029120046 4microstepping controller/driver MOS –7042125050 4stepper motor translator/driver –X 580450 4––X ––2064 and 2068150080 4––X ––2065 and 2069180050 4––X ––254450 4––X ––2540300046 4stepper motor controller/driver MOS –702646 4microstepping controller/driver MOS –7044400050 4––X ––287880 4––X ––2879*Current is maximum specified test condition, voltage is maximum rating. See specification for sustaining voltage limits orover-current protection voltage limits.†Complete part number includes additional characters to indicate operating temperature range and package style.。