UDQ2549EB中文资料

Data Sheet2549PROTECTEDQUAD POWER DRIVER115 Northeast Cutoff, Box 15036Worcester, Massachusetts 01615-0036 (508) 853-5000UDx2549EB106420A 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 °C8Dwg. GP-004-1AGROUNDGROUNDGROUND GROUNDDwg. PP-019-1KN O C O N N E C T I O NE N A B L ES U P P L Y O U T 1O U T 2O U T 3O U T 4I N 4I N 3I N 2I N 1N OC O N N E C T I O NKCopyright © 1991, 1995, Allegro MicroSystems, Inc.2549PROTECTEDQUAD POWER DRIVERCharacteristicSymbol Test ConditionsMin.Typ.Max.Units Output Leakage CurrentI CEXV OUT = 60 V, V IN = 0.8 V, V EN = 2.0 V —<1.0100µA V OUT = 60 V, V IN = 2.0 V, V EN = 0.8 V—<1.0100µA Output Sustaining Voltage V OUT(SUS)I OUT = 100 mA, V IN = V EN = 0.8 V 40——V Output Saturation VoltageV OUT(SAT)I OUT = 100 mA ——200mV I OUT = 400 mA ——400mV I OUT = 600 mA——600mV Over-Current Trip I TRIP — 1.0—A Input VoltageLogic 1V IN(1) or V EN(1) 2.0——V Logic 0V IN(0) or V EN(0)——0.8V Input CurrentLogic 1V IN(1) or V EN(1) = 2.0 V ——10µA Logic 0V IN(0) or V EN(0) = 0.8 V——-10µA Total Supply CurrentI CCI OUT = 600 mA, V IN * = V EN = 2.0 V ——65mA All Outputs OFF——15mA Clamp Diode Forward Voltage V F I F = 1.0 A—— 1.7V Clamp Diode Leakage Current I R V R = 60 V, D 1 + D 2 or D 3 + D 4——50µA Thermal LimitT J—165—°CLimitsTypical 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 (prefix ‘UDN’) or over operating temperature range (prefix ‘UDK’ or ‘UDQ’), V CC = 4.75 V to 5.25 V2549PROTECTEDQUAD POWER DRIVER115 Northeast Cutoff, Box 15036Worcester, Massachusetts 01615-0036 (508) 853-5000CIRCUIT DESCRIPTION AND APPLICATIONINCANDESCENT LAMP DRIVERHigh incandescent lamp turn-ON/in-rush currents can contribute to poor lamp reliability and destroy semiconductor lamp drivers. Warming or current-limiting resistors protect both driver and lamp but use signifi-cant power either when the lamp is OFF or when the lamp is ON,respectively. Lamps with steady-state current ratings up to 600 mA can be driven by these devices without the need for warming (parallel)or current-limiting (series) resistors.When an incandescent lamp is initially turned ON, the cold filament is at minimum resistance and would normally allow a 10x to 12x in-rush current. With the these drivers, during turn-ON, the high in-rush current is sensed by the internal low-value sense resistor. Drive current to the output stage is then diverted by the shunting transistor, and the load current is momentarily limited to approximately 1.0 A. During this short transition period, the output current is reduced to a value dependent on supply voltage and filament resistance. During lamp warmup, the filament resistance increases to its maximum value, the output stage goes into saturation and applies maximum rated voltage to the lamp.INDUCTIVE LOAD DRIVERBifilar (unipolar) stepper motors, relays, or solenoids can be driven directly. The internal flyback diodes prevent damage to the output transistors by suppressing the high-voltage spikes which occur when turning OFF an inductive load. For rapid current decay (fast turn-OFF speeds), the use of Zener diodes will raise the flyback voltage andimprove performance. However, the peak voltage must not exceed the specified minimum sustaining voltage (V SUPPLY + V Z + V F ≤ V OUT(SUS)).FAULT CONDITIONSIn the event of a shorted load, the load current will attempt toincrease. As described above, the drive current to the affected output stage is reduced, causing the output stage to go linear, limiting the peak output current to approximately 1 A. As the power dissipation of that output stage increases, a thermal gradient sensing circuit will become operational, further decreasing the drive current to the affected output stage and reducing the output current to a value dependent on supply voltage and load resistance.Continuous or multiple overload conditions causing the chip tem-perature to reach approximately 165°C will result in an additional reduction in output current to maintain a safe level.If the fault condition is corrected, the output stage will return to its normal saturated condition.TYPICAL OUTPUT CHARACTERISTICDwg. GP-013O U T P U T V O L T A G E , V O U TOUTPUT CURRENT, IOUTTYPICAL OUTPUT BEHAVIORTIMEDwg. WP-008L A M P C U R R E N T2549PROTECTED QUAD POWER DRIVER UDN2549B and UDQ2549B Dimensions in Inches(controlling dimensions)Dimensions in Millimeters(for reference only)NOTES:1.Exact body and lead configuration at vendor’s option within limits shown.2.Lead spacing tolerance is non-cumulative3.Lead thickness is measured at seating plane or below.4.Webbed lead frame. Leads 4, 5, 12, and 13 are internally one piece.Dwg. MA-001-17A mm18Dwg. MA-001-17A in16182549PROTECTEDQUAD POWER DRIVER115 Northeast Cutoff, Box 15036Worcester, Massachusetts 01615-0036 (508) 853-5000UDN2549EB and UDQ2549EBDimensions in Inches (controlling dimensions)Dimensions in Millimeters (for reference only)NOTES:1.Exact body and lead configuration at vendor ’s option within limits shown.2.Lead spacing tolerance is non-cumulative3.Webbed lead frame. Leads 5 through 11 and 19 through 25 are internally one piece.Dwg. MA-005-28A in5Dwg. MA-005-28A mm52549PROTECTED QUAD 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.2549PROTECTEDQUAD POWER DRIVER115 Northeast Cutoff, Box 15036Worcester, Massachusetts 01615-0036 (508) 853-5000POWER SINK DRIVERSIN ORDER OF 1) OUTPUT CURRENT, 2) OUTPUT VOLTAGE, 3) NUMBER OF DRIVERSOutput Ratings *Features Serial Latched Diode Internal mAV #Input DriversClampOutputsProtectionPart Number†75178X X –constant current –62751716X X –constant current –627610020 8–––saturated –25953032X X –––58334032X X –saturated –583250 8addressable decoder/driver DMOS –6B25950 8–X –DMOS –6B27350 8X X –DMOS –6B59525050 8addressable decoder/driver 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 saturated –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 8addressable decoder/driver DMOS –6A25950 8X X –DMOS –6A59580 8X X –––582280 8X X X ––584295 7––X ––202495 8––X ––28244503028dual 4- to 14-line decoder/driver ––681760060 4–––saturated X 254760 4––X saturated X 254970060 4––X saturated X 2543 and 255975050 8––X saturated –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.。