DS3668NHAPB TI1 | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 7

Technical content

DS3668 Quad Fault Protected Peripheral Driver Literature Number: SNLS351A

Quad Fault Protected Peripheral Driver General Description The DS3668 quad peripheral driver is designed for those applications where low operating power, high breakdown voltage, high output current and low output ON voltage are required. Unlike most peripheral drivers available, a unique fault protected circuit is incorporated on each output. When the load current exceeds 1.0A (approximately) on any output for more than a built-in delay time, nominally 12 µs, that output will be shut off by its protection circuitry with no effect on other outputs. This condition will prevail until that protec- tion circuitry is reset by toggling the corresponding input or the enable pin low for at least 1.0 µs. This built-in delay is provided to ensure that the protection circuitry is not trig- gered by turn-on surge currents associated with certain kinds of loads. The DS3668’s inputs combine TTL compatibility with high input impedance. In fact, its extreme low input current allows it to be driven directly by a MOS device. The outputs are capable of sinking 600 mA each and offer a 70V breakdown. However, for inductive loads the output should be clamped to 35V or less to avoid latch up during turn off (inductive fly-back protection — refer AN-213). An on-chip clamp diode capable of handling 800 mA is provided at each output for this purpose. In addition, the DS3668 incorporates circuitry that guarantees glitch-free power up or down operation and a fail-safe feature which puts the output in a high impedance state when the input is open. The molded package is specifically constructed to allow increased power dissipation over conventional packages. The four ground pins are directly connected to the device chip with a special copper lead frame. When the quad driver is soldered into a PC board, the power rating of the device improves significantly.

Applications

n High current, high voltage drivers n Level translators n Fiber optic LED drivers

Features

n High impedance TTL compatible inputs n High output current — 600 mA per output n No output latch-up at 35V n Low output ON voltage (550 mV typ@ 600 mA) n High breakdown voltage (70V) n Open collector outputs n Output clamp diodes for inductive fly-back protection n NPN inputs for minimal input currents (1 µA typical) n Low operating power n Standard 5V power supply n Power up/down protection n Fail-safe operation n 2W power package n Pin-for-pin compatible with SN75437 Connection Diagram Dual-In-Line Package DS005225-1 Top View Order Number DS3668N See NS Package Number N16E January 2001 DS3668 Quad Fault Protected Peripheral Driver © 2001 National Semiconductor Corporation DS005225 www.national.com

H = High state L = Low state Z = High impedance state DS3668 www.national.com 2

Absolute Maximum Ratings(Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage 7.0V Input Voltage 15V Output Voltage 70V Continuous Power Dissipation @ 25˚C Free-Air (Note 5) 2075 mW Storage Temperature Range −65˚C to +150˚C Lead Temperature (Soldering, 4 seconds) 260 Operating Conditions Min Max Units Supply Voltage 3.00 5.25 V Ambient Temperature −40 125 ˚C Electrical Characteristics(Notes 2, 3, 6) Symbol Parameter Conditions Min Typ Max Units VIH Input High Voltage 2.0 V VIL Input Low Voltage 0.8 V IIH Input High Current V IN = 5.25V, VCC = 5.25V 1.0 20 µA IIL Input Low Current V IN = 0.4V ±10 µA VIK Input Clamp Voltage I I = −12 mA −0.8 −1.5 V VOL Output Low Voltage I L = 300 mA 0.2 0.7 V IL = 600 mA (Note 4) 0.55 1.5 V ICEX Output Leakage Current V CE = 70V, VIN = 0.8V 100 µA VF Diode Forward Voltage I F = 800 mA 1.2 1.6 V IR Diode Leakage Current V R = 70V 100 µA ICC Supply Current All Inputs High 62 80 mA All Inputs Low 20 mA ITH Protection Circuit Threshold Current 1 1.4 A Switching Characteristics(Notes 2, 6) Symbol Parameter Conditions Min Typ Max Units tPHL Turn On Delay R L =6 0Ω ,V L = 30V 0.3 1.0 µs tPLH Turn Off Delay R L =6 0Ω ,V L = 30V 2 10.0 µs tFZ Protection Enable Delay (after Detection of Fault) 61 2 µ s tRL Input Low Time for Protection Circuit Reset 1.0 µs Note 1:“Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices should be operated at these limits. The table of “Electrical Characteristics” specifies conditions of actual device operation. Note 2:Unless otherwise specified, min/max limits apply across the 0˚C to +70˚C temperature range and the 4.75V to 5.25V power supply range. All typical values are for TA = 25˚C and VCC = 5.0V. Note 3:All currents into device pins are shown as positive; all currents out of device pins are shown as negative; all voltages are referenced to ground, unless otherwise specified. All values shown as max or min are so classified on absolute value basis. Note 4:All sectors of this quad circuit may conduct rated current simultaneously, however, power dissipation averaged over a short interval of time must fall within specified continuous dissipation ratings. Note 5:For operation over 25˚C free-air temperature, derate linearly to 1328 mW@ 70˚C @ the rate of 16.6 mW/˚C. Note 6:Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis. DS3668 www.national.com3

AC Test Circuit Switching Waveforms Typical Application Protection Circuit Block Diagram DS005225-2 DS005225-3 DS005225-4 DS005225-5 DS3668 www.national.com 4

Physical Dimensionsinches (millimeters) unless otherwise noted LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. National Semiconductor Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com National Semiconductor Europe Fax: +49 (0) 180-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Français Tel: +33 (0) 1 41 91 8790 National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: ap.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 www.national.com Molded Dual-In-Line Package (N) Order Number DS3668N DS3668 Quad Fault Protected Peripheral Driver National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.

Texas InstrumentsIncorporatedand itssubsidiaries(TI)reservetherighttomake corrections,modifications,enhancements,improvements, and otherchanges toitsproductsand servicesatany timeand todiscontinueany productorservicewithoutnotice.Customersshould obtainthelatestrelevantinformationbeforeplacingordersand shouldverifythatsuch informationiscurrentand complete.Allproductsare soldsubjecttoTI’s termsand conditionsofsalesuppliedatthetimeoforderacknowledgment. TIwarrantsperformanceofitshardwareproductstothespecificationsapplicableatthetimeofsaleinaccordancewithTI’s standard warranty.Testingand otherqualitycontroltechniquesareused totheextentTIdeems necessarytosupportthiswarranty.Exceptwhere mandated by governmentrequirements,testingofallparametersofeach productisnotnecessarilyperformed. TIassumes no liabilityforapplicationsassistanceorcustomerproductdesign.Customersareresponsiblefortheirproductsand applicationsusingTIcomponents.To minimizetherisksassociatedwithcustomerproductsand applications,customersshouldprovide adequatedesignand operatingsafeguards. TIdoes notwarrantorrepresentthatany license,eitherexpressorimplied,isgrantedunderany TIpatentright,copyright,mask work right, orotherTIintellectualpropertyrightrelatingtoany combination,machine,orprocessinwhichTIproductsorservicesareused.Information publishedby TIregardingthird-partyproductsorservicesdoes notconstitutea licensefromTItouse such productsorservicesora warrantyorendorsementthereof.Use ofsuch informationmay requirea licensefroma thirdpartyunderthepatentsorotherintellectual propertyofthethirdparty,ora licensefromTIunderthepatentsorotherintellectualpropertyofTI. ReproductionofTIinformationinTIdatabooks ordatasheetsispermissibleonlyifreproductioniswithoutalterationand isaccompanied by allassociatedwarranties,conditions,limitations,and notices.Reproductionofthisinformationwithalterationisan unfairand deceptive businesspractice.TIisnotresponsibleorliableforsuch altereddocumentation.Informationofthirdpartiesmay be subjecttoadditional restrictions. ResaleofTIproductsorserviceswithstatementsdifferentfromorbeyond theparametersstatedby TIforthatproductorservicevoidsall expressand any impliedwarrantiesfortheassociatedTIproductorserviceand isan unfairand deceptivebusinesspractice.TIisnot responsibleorliableforany such statements. TIproductsarenotauthorizedforuse insafety-criticalapplications(suchas lifesupport)where a failureoftheTIproductwouldreasonably be expectedtocause severepersonalinjuryordeath,unlessofficersofthepartieshave executedan agreementspecificallygoverning such use.Buyersrepresentthattheyhave allnecessaryexpertiseinthesafetyand regulatoryramificationsoftheirapplications,and acknowledgeand agreethattheyaresolelyresponsibleforalllegal,regulatoryand safety-relatedrequirementsconcerningtheirproducts and any use ofTIproductsinsuch safety-criticalapplications,notwithstandingany applications-relatedinformationorsupportthatmay be providedby TI.Further,Buyersmust fullyindemnifyTIand itsrepresentativesagainstany damages arisingoutoftheuse ofTIproductsin such safety-criticalapplications. TIproductsareneitherdesignednorintendedforuse inmilitary/aerospaceapplicationsorenvironmentsunlesstheTIproductsare specificallydesignatedby TIas military-gradeor"enhanced plastic." Onlyproductsdesignatedby TIas military-grademeet military specifications.Buyersacknowledgeand agreethatany such use ofTIproductswhichTIhas notdesignatedas military-gradeissolelyat theBuyer's risk,and thattheyaresolelyresponsibleforcompliancewithalllegaland regulatoryrequirementsinconnectionwithsuch use. TIproductsareneitherdesignednorintendedforuse inautomotiveapplicationsorenvironmentsunlessthespecificTIproductsare designatedby TIas compliantwithISO/TS 16949 requirements.Buyersacknowledgeand agreethat,iftheyuse any non-designated productsinautomotiveapplications,TIwillnotbe responsibleforany failuretomeet such requirements. FollowingareURLs where you can obtaininformationon otherTexas Instrumentsproductsand applicationsolutions: Products Applications Audio www.ti.com/audio Communicationsand Telecom www.ti.com/communications Amplifiers amplifier.ti.com Computers and Peripherals www.ti.com/computers Data Converters dataconverter.ti.com Consumer Electronics www.ti.com/consumer-apps DLP ® Products www.dlp.com Energyand Lighting www.ti.com/energy DSP dsp.ti.com Industrial www.ti.com/industrial Clocksand Timers www.ti.com/clocks Medical www.ti.com/medical Interface interface.ti.com Security www.ti.com/security Logic logic.ti.com Space,Avionicsand Defense www.ti.com/space-avionics-defense Power Mgmt power.ti.com Transportationand Automotive www.ti.com/automotive Microcontrollers microcontroller.ti.com Videoand Imaging www.ti.com/video RFID www.ti-rfid.com OMAP MobileProcessors www.ti.com/omap WirelessConnectivity www.ti.com/wirelessconnectivity TIE2E Community Home Page e2e.ti.com MailingAddress:Texas Instruments,PostOfficeBox 655303,Dallas,Texas 75265 Copyright© 2011,Texas InstrumentsIncorporated