常用芯片资料——LM293D.docx

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1、1,2EN HEATSINK AND GROUND1A 1Y 2Y 2A VCC2 1 16215314413512611710892Y3Y4YI 600-mA Output Current Capability PerI DriverI Pulsed Current 1.2-A Per DriverI Output Clamp Diodes for Inductive Transient Suppression Wide Supply Voltage Range 4.5 V to 36 V Separate Input-Logic Supply Thermal Shutdown Intern

2、al ESD Protection High-Noise-Immunity Inputs Functional Replacement for SGS L293DdescriptionThe L293D is a quadruple high-current half-H driver designed to provide bidirectional drive currents of up to 600-mA at voltages from 4.5 V to 36 V It is designed to drive inductive loads such as relays, sole

3、noids, de and bipolar stepping motors, as well as other high-current/high-voltage loads in positive-supply applications.All inputs are TTL-compatible. Each output is a complete totem-pole drive circuit with a Darlington transistor sink and a pseudo-Darlington source. Drivers are enabled in pairs wit

4、h drivers 1 and 2 enabled by 1,2EN and drivers 3 and 4 enabled by 3,4EN. When an enable input is high, the associated drivers are enabled, and their outputs are active and in phase with their inputs. External high-speed output clamp diodes should be used for inductive transient suppression. When the

5、 enable input is low, those drivers are disabled, and their outputs are off and in a high-impedance state. With the proper data inputs, each pair of drivers form a full-H (or bridge) reversible drive suitable for solenoid or motor applications.A Vcci terminal, separate from Vcc2, is provided for the

6、 logic inputs to minimize device power dissipation.The L293D is designed for operation from 0 to 70.NE PACKAGE(TOP VIEW)J VCC14A4YI HEATSINK ANDf GROUND3Y3A3,4ENlogic symbol1t This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.logic diagram2 1A 11,2EN 一7 2A 10 3A93,4E

7、N15 4AFUNCTION TABLE (each driver)INPUTStOUTPUT YAENHHHLHLXLZH = high-level, L = low level,X = irrelevant, Z = high-impedance (off) t In the thermal shutdown mode, the output is in the high-impedance state regardless of the input levels.PRODUCTION DATA information is current as of publication date.

8、Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.Copyright 1990, Texas Instruments Incorporatedschematics of inputs and outputsabsolute maximum ratings over operating free-air tempera

9、ture range (unless otherwise noted)Logic supply voltage range, Vcci (see Note 1) 36 VOutput supply voltage range, Vcc2 36 VInput voltage range, V| 7 VOutput voltage range, V。 -3V to Vcc2 + 3 VPeak output current (nonrepetitive, t 100 ps) 1.2 AContinuous output current, Iq 600 mAContinuous total diss

10、ipation at (or below) 25 free-air temperature (see Notes 2 and 3) 2075 mWContinuous total dissipation at 80 case temperature (see Note 3) 5000 mWOperating case or virtual junction temperature range, Tj -40 to 150Storage temperature range, Tstg -65 to 150Lead temperature 1,6 mm (1/16 inch) from case

11、for 10 seconds 260NOTES: 1. All voltage values are with respect to the network ground terminal.2. For operation above 25 free-air temperature, derate linearly at the rate of 16.6 mW/.3. Foroperationabove25case temperature, derate linearly at the rate of71.4mW/.Duetovariationsinindividualdeviceelectr

12、ical characteristics and thermal resistance, the built-in thermal overload protection may be activated at power levels slightly above or below the rated dissipation.recommended operating conditionsMIN MAXUNITLogic supply voltage, V4.57VOutput supply voltage,VcC1 36VHigh-level input voltage, V|hVCC1

13、7V23 VcciVVCC1 N 7 V2.37Low-level input voltage, V|_-0.3t1,5VOperating free-air temperature, T/70t The algebraic convention, in which the least positive (most negative) value is designated minimum, is used in this data sheet for logic voltage levels.electrical characteristics, Vcci = 5 V VcC2= 24 V

14、Ta= 25PARAMETERTEST CONDITIONSMINTYPMAXUNITVqh High-level output voltage|qh =-0.6 aVCC2-L8 VcC2-1-4VVql Low-level output voltageIOL= 0 6 A1.21.8VVoKH High-level output clamp voltagelOK 二-。6 AV +1.3VVqkl Low-level output clamp voltagelOK = -。-6 A“q.3VIHigh-level input currentIHAV| = 7V0.2100MAEN0.210

15、ILow-level input currentILAV| = 0-3-10MAEN-2-100ICC1 Logic supply currentI =0 0All outputs at high level1322mAAll outputs at low level3560All outputs at high impedance824(CC2 Output supply currentI =0 0All outputs at high level1424mAAll outputs at low level26All outputs at high impedance24switching

16、characteristics, Vcci = 5 V VcC2= 24 V Ta= 25PARAMETERTEST CONDITIONSMIN TYP MAXUNITtp_H Propagation delay time, low-to-high-level output from A inputCl 二 30 pF, See Figure 1800nstPHL Propagation delay time, high-to-low-level output from A input400nstTLH Transition time, low-to-high-level output300n

17、stfHL Transition time, high-to-low-level output300nsPARAMETER MEASUREMENT INFORMATIONInput 5 V 24 VTEST CIRCUITInputVOLTAGE WAVEFORMSNOTES: A. The pulse generator has the following characteristics: tr 10 ns, tf 10 ns, tw = 10 ps, PRR = 5 kHz, Zq = 50 Q. B. C|_ includes probe and jig capacitance.Figu

18、re 1. Test Circuit and Voltage WaveformsAPPLICATION INFORMATIONFigure 2. Two-Phase Motor DriverIMPORTANT NOTICETexas Instruments and its subsidiaries (Tl) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the l

19、atest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringeme

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21、ecific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements.CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (CRITICAL APPLICATIONS).

22、Tl SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF Tl PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMERS RISK.In order to minimize risks associated with the

23、customers applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards.Tl assumes no liability for applications assistance or customer product design. Tl does not warrant or represent that any license, either express or implied, i

24、s granted under any patent right, copyright, mask work right, or other intellectual property right of Tl covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TPs publication of information regarding any third partys products or services does not constitute TPs approval, warranty or endorsement thereof.Copyright 1998, Texas Instruments Incorporated