OB3392 Demo Board Manual(A)_富华_121210

ߜ10 PID Control Loops with Auto-Tuning ߜJ, K, T, E, R or S Thermocouple, RTD and 4 to 20 mA Current Input TypesSelectable for Each Loopߜ 2 Alarm Setpoints Per LoopߜOptical Isolation for ElectricallyNoisy EnvironmentsProgram 28145679103Probes sold separately.KQSS-316G-12, $25 eachSee Section AߜRelay, Triac, 4 to 20 mA andac SSR Output CapabilityߜOptional RS-232, RS-422 andRS-485 Digital CommunicationsߜCoded Security Levels to PreventUnauthorized Access to ProgrammingߜModular Construction Allows FieldInstallation of Output, Alarm, andCommunications OptionsCN3390 Series$2480Basic UnitMulti-Loop PID Temperature/Process Controllers CN3390 SeriesACCEPTS10 INPUTS!P-129P-130Takes the Place of Ten ControllersThe OMEGA ®CN3390 ON/OFF, proportional, PID Multi-Loop Temperature/Process Controller,measuring only 95 mm (3.75") deep, features the inputs,outputs, programmable features and sophisticated control techniques typically found only in much larger controllers. The CN3390 requires only 30% of the mounting space required for 10 individual controllers. All hardwiring is done once on high quality plug-on terminal strips, so the unit can easily be installed or taken out of service.The CN3390, with its optical isolation of inputs, outputs and optional digital communications, is built to handle most real-world factory conditionswithout special filtering equipment, such as snubbers,isolated power supplies or noise suppressors.Digital Signal Processing (DSP) sets the CN3390controller apart from other multi-loop controllers. DSP maintains the integrity of the sensor input signals, resulting in more stable control. Over-sampling of inputs (92 times per second per input) and an input update rate of 0.5 seconds per loop ensure that theCN3390 responds quickly to process changes.Through simple programming selections, you can adjust the controller displays to establish the range and engineering units of indication for the current input.The CN3390 provides two alarm setpoints per loop (20 total), and an alarm LED for each loop. Any of these 20setpoints can be connected to the common alarm output or one of ten optional alarm outputs. The common alarm output can be turned off fromeither the front panel alarm acknowledge pushbutton or from a remote pushbutton.The CN3390 alarm setpoints can be mapped to an optional internal alarm board. The alarm board’s digital alarm outputs or the common alarm can be connected to a remote single relay alarm module or an external 10-relay alarm output board.All control selections and programmed information are selectable from the front panel pushbuttons. Straightforward cues and high resolution LED’s send clear messages regarding the operation,set-up and programming of the controller. The autoscan feature scrolls through each loop, displaying process temperature, setpoint and loop number.Optional RS-232C, RS-422A and RS-485 digital communications are available for all 10 loops. Using RS-422A or RS-485, you can address up to 255 controllers.CN3390 offers flexible mounting: remote mounting,panel door mounting, or basic sub-panel mounting. The front panel display plugs directly into the controller chassis so it can be mounted remotely or simply removed to prohibit tampering or unauthorizedprogramming. Remote connection cables are available in 450 mm (18"), 1.5 m (5') and 4.5 m (15') lengths.CN3390 shown with remote mounting cableP-131SpecificationsControl Modes (Field Selectable)Automatic:ON/OFF,proportional, proportional with automatic reset/integral and/or rate/derivative (PID, PI, PD)Manual:Bumpless, balanceless transfer with proportional control;disintegration time = 1 to 100 sec Control Adjustments (Field Selectable)Control Setpoint:Instrument sensor range (°F, °C, %)Setpoint Limits:Instrument sensor range Deadband:0.01 to 25.00%Proportional Band:0.1 to 999.9% of span Automatic Reset:0.00 to 99.99repeats/minute Rate:0 to 1000 secondsOutput Cycle Time:0.1 to 60.0 secondsOutput Limit:0 to 100% ON Control Outputs (Plug-In):Total 5outputs modules, 2 control loops per output module Relay:N.O., rated 1.0 A @120Vac or 0.5 A @ 230 VAc (resistive load)1 A SSR: 1 A continuous, 10 A in-rush current at 120 or 230 Vac (resistive load)Current/Voltage:Non-isolated:4to 20 mA into 0 to 800 Ωload;isolated: 4 to 20 mA into 0 to 400Ωload with 24 V power supply SSR Pulse:transistor output of 20Vdc nominal at 40 mAAlarm Outputs: 2 field assignable alarm setpoints per loop, each can be mapped to any one of 10 alarm outputs or the common alarmoutput; 1 common latching alarm output, current limited, emitterfollower transistor; optional 10 open collector transistor outputs,sink 40mAdc at 50VdcAlarm Modes:High and low, range 100% of span, non-latching; ±deviation, sensor span above/below control setpointReset Differential: 0 to 25%instrument sensor range, 0.01incrementsAlarm Relay Board (Optional):10 relays, rated 10 A @ 120 V, form C contacts; includes 24 Vdc power supply (unregulated) to power relay coils; requires 120 Vac or 240 Vac inputInput Update Rate: 2 updates per second (92 samples per second)CN3390 Multi-Loop PIDTemperature/Process ControllersP-132two relays, one 1 A SSR, one 4-20 mA isolated and one 20 Vdc pulse control outputs, with optional digital communications, $2480 + 85 + 370 = $2935Ordering Example: CN3390-R , ten loop controller with ten relay outputs = $2480OCW-1 OMEGACARE SM extends standard 1-year warranty to a total of 2 years ($150), $2480 + 150 = $2630Open Sensor andOut-Of-Range Conditions:Programmable for 0-100% output Digital Communications Option: RS-232C single drop, isolated;RS-422A, RS-485 multi-drop, isolated; baud rate 300, 600, 1200, 2400, 4800, 9600, 19,200; data string ASCII,asynchronous, one start, one parity, seven data and one stop bit or binary Instrument Power:120 or 230 Vac(+10%, -15%), 50 to 60 Hz, 7 VA nominal power consumptionOperating Environment:0 to 55°C (30 to 130°F) ambient temperature with relative humidity less than 95% non-condensing Dimensions:318 W x 292 D x 95 mm L (12.5 x 11.5 x 3.75")Weight: 10 lb (4.5 kg)†3390A-RS is equivalent to -2optionOMEGACARE SM extended warranty program is available for models shown on this page. Ask your sales representative for full details when placing an order.CANADA www.omega.ca Laval(Quebec) 1-800-TC-OMEGA UNITED KINGDOM www. Manchester, England0800-488-488GERMANY www.omega.deDeckenpfronn, Germany************FRANCE www.omega.frGuyancourt, France088-466-342BENELUX www.omega.nl Amstelveen, NL 0800-099-33-44UNITED STATES 1-800-TC-OMEGA Stamford, CT.CZECH REPUBLIC www.omegaeng.cz Karviná, Czech Republic596-311-899TemperatureCalibrators, Connectors, General Test and MeasurementInstruments, Glass Bulb Thermometers, Handheld Instruments for Temperature Measurement, Ice Point References,Indicating Labels, Crayons, Cements and Lacquers, Infrared Temperature Measurement Instruments, Recorders Relative Humidity Measurement Instruments, RTD Probes, Elements and Assemblies, Temperature & Process Meters, Timers and Counters, Temperature and Process Controllers and Power Switching Devices, Thermistor Elements, Probes andAssemblies,Thermocouples Thermowells and Head and Well Assemblies, Transmitters, WirePressure, Strain and ForceDisplacement Transducers, Dynamic Measurement Force Sensors, Instrumentation for Pressure and Strain Measurements, Load Cells, Pressure Gauges, PressureReference Section, Pressure Switches, Pressure Transducers, Proximity Transducers, Regulators,Strain Gages, Torque Transducers, ValvespH and ConductivityConductivity Instrumentation, Dissolved OxygenInstrumentation, Environmental Instrumentation, pH Electrodes and Instruments, Water and Soil Analysis InstrumentationHeatersBand Heaters, Cartridge Heaters, Circulation Heaters, Comfort Heaters, Controllers, Meters and SwitchingDevices, Flexible Heaters, General Test and Measurement Instruments, Heater Hook-up Wire, Heating Cable Systems, Immersion Heaters, Process Air and Duct, Heaters, Radiant Heaters, Strip Heaters, Tubular HeatersFlow and LevelAir Velocity Indicators, Doppler Flowmeters, LevelMeasurement, Magnetic Flowmeters, Mass Flowmeters,Pitot Tubes, Pumps, Rotameters, Turbine and Paddle Wheel Flowmeters, Ultrasonic Flowmeters, Valves, Variable Area Flowmeters, Vortex Shedding FlowmetersData AcquisitionAuto-Dialers and Alarm Monitoring Systems, Communication Products and Converters, Data Acquisition and Analysis Software, Data LoggersPlug-in Cards, Signal Conditioners, USB, RS232, RS485 and Parallel Port Data Acquisition Systems, Wireless Transmitters and Receivers。

Supertex inc.HV9982DB1General DescriptionThe HV9982DB1 is a three channel boost LED driver demoboard using Supertex’s HV9982 LED Driver IC. The LED driver can be used to drive RGB or multi channel white LEDs from a 24V input. The LED string current can be adjusted up to a maximum of 100mA. The demoboard has good current matching between strings and an excellent PWM dimming response, making it ideal for LED backlight applications.The HV9982DB1 uses the HV9982 LED driver IC to drive three discontinuous conduction mode boost converters at a 500kHz switching frequency. The clocks of the three channels are phase shifted to provide ripple cancellation at the input and thus reducing the input capacitor requirements. The output current level can be adjusted using an external voltage source at the REF terminal.The HV9982DB1 includes hiccup mode protection for both short circuit and open circuit conditions to ensure that it recovers from a momentary fault condition. It also enables the board to survive prolonged fault conditions without any damage to both the driver as well as the LEDs.The HV9982DB1 also includes an on-board PWM generator for analog control for PWM dimming (for backward compatibility with CCFL controllers). This feature enablesthe user to PWM dim the driver with a 0 - 2.0V analog signal input and helps to achieve zero LED current with an analog dimming inputConnection DiagramThree ChannelLED Driver DemoboardNormal Operation – Connect the board as shown in the connection diagram. Ensure that switches S1 and S2 are LO. Turn on the clock, 24V supply and the reference volt-age. Connect any of the PWMD pins to VDD. The LEDs of the corresponding channel will light up. Measure the LED current using an ammeter and the reference voltage using a voltmeter. The current will be:I LED = V REF ± 3.0%4.99(1)Current matching – Without changing the reference volt-age, enable each channel individually and measure the cur-rent (or, if possible, enable all channels and the three output currents simultaneously). The error will be ≤ ± 3%.Linear Dimming – Vary the reference voltage between 0 – 500mV and measure the LED current.The current will vary as per Eqn.1. This variation is fairly lin-ear until the REF voltage gets very low. As the voltage goes below 50mV, the current will not match the reference voltage as linearly.PWM Dimming – With the reference voltage fixed at 0.5V, apply a TTL compatible square wave signal (≤1kHz). The LED current will dim based on the duty cycle of the PWM input.Analog Control of PWM Dimming – Change S1 and S2 as required using Table 1. Connect the analog 0-2V source at the PWMD terminal and turn on the demoboard. The LEDs will dim and the LED current can be adjusted by varying the analog voltage.Open LED protection – Connect a voltage probe between the VO+ terminal of any channel and GND and disconnect the LED string. The output voltage will rise up to 92V and trip the over voltage protection. At this point, all three chan-nels will shut down and the output voltage of the channel with the open LED condition will be maintained hysteretically between 92V and 82V until the output voltage of the fauly channel falls below 82V or till the LED string is reconnected. Once the LED string is reconnected, all three channels will turn back on.Short Circuit Protection – Short the output terminals of any one channel using a jumper. All three channels shut down and the IC tries restarting every 1.0ms. Once the short circuit is removed, all three channels come back into regulation.Testing the DemoboardNormal Operation Fig.1 shows the waveforms during normal operation at full load and 24V input. The smaller pulses in the drain wave-forms represent the ringing between the input inductor of theboost converter and the parasitic capacitance at the drain pin of the switching FET. This is a normal occurrence in any discontinuous mode converter.Typical ResultsFig. 1: Waveforms for Normal OperationsC1 (Yellow): Drain Waveform for Channel 1 (50V/div)C2 (Pink): Drain Waveform for Channel 2 (50V/div)C3 (Blue): Drain Waveform for Channel 3 (50V/div)C4 (Green): Output Current for Channel 1 (100mA/div)Time Scale: 1μs/divStartupFig. 2 shows the startup waveforms. These waveforms were obtained by connecting the PWMD pins to VDD and apply-ing a step waveform at the 24V input. There is a 500μs delay before the ramp voltage starts rising. This delay is due to the time required to charge the capacitors at the VDD pins plusthe internal power-on-reset time. The other part of the delay is the time required by the ramp capacitor to charge to 5V. Once the RAMP voltage reaches 5V, the converter starts switching and the LED current starts up slowly without any overshoots.Fig. 2: Startup WaveformsC2 (Pink): RAMP waveform (2V/div)C1 (Yellow): Input Voltage (10V/div)C4 (Green): Output Current for Channel 1 (50mA/div)Time Scale: 500μs/divOpen LED ProtectionFigs.3-6 show the over voltage protection in operation. Fig. 3 shows the open circuit condition occurring when the LED current goes to zero. At this point, the output voltage starts increasing since the energy from the input is used to charge the output capacitors. Once the output voltage reaches 92V,all three channels are shut down (Note: Output Voltage re-fers to VO+ voltage measured w.r.t GND). The hysteretic over voltage protection is shown in Fig. 4 where the output voltage is consistently maintained between 82V and 92V.Fig. 3: Over Voltage TriggerC1 (Yellow): Output Voltage of Channel 1 (20V/div)C4 (Green): Output Current for Channel 1 (50mA/div)Time Scale: 20μs/divC1 (Yellow): Output Voltage of Channel 1(20V/div) C4 (Green): Output Current for Channel 1 (50mA/div)Time Scale: 20ms/divThe recovery from an open LED condition is shown in Fig. 5. Two spikes are observed in the LED current. These spikes are caused by the output capacitor discharging into the LEDs since the capacitor voltage is higher the LED string voltage. This causes the HV9982 to go into a hiccup mode short cir-cuit condition till the capacitor voltage becomes lower than the LED string voltage (as seen by the dip the output volt-age). Once all fault conditions are cleared, the LED current starts up smoothly into normal operation. Fig. 6 shows the recovery with a smaller timescale.Fig. 5: Recovery from Open LED OperationC1 (Yellow): Output Voltage of Channel 1(20V/div)C4 (Green): Output Current for Channel 1 (50mA/div)Time Scale: 20mA/divFig. 6: Recovery (smaller time scale)C1 (Yellow): Output Voltage of Channel 1(20V/div)C4 (Green): Output Current for Channel 1 (50mA/div)Time Scale: 500μs/divFig. 4: Open LED OperationShort Circuit ProtectionFigs. 7-9 show the operation of the short circuit protection. Fig. 7 shows the response of the HV9982 to a short circuit condition. The short circuit condition occurs when the output current starts rising and the circuit shuts down in less than 200ns, providing a very fast response to an output short cir-cuit (Note: LED string voltage refers to VO+ voltage mea-sured w.r.t its corresponding VO-).The hiccup mode operation is shown in Fig. 8. The converter tries to restart every 1ms and if the short circuit condition is still detected, the converter shuts down.The recovery from the short circuit condition is shown in Fig. 9. The LED current starts up without any overshoots.Fig. 7: Waveforms for Normal OperationsMa (Orange): LED String Voltage of Channel 1(20V/div)C4 (Green): Output Current for Channel 1 (200mA/div)Time Scale: 200ns/divFig. 8: Short Circuit HiccupC1 (Yellow): Output Voltage of Channel 1(20V/div)C4 (Green): Output Current for Channel 1 (200mA/div)Time Scale: 1ms/divFig. 9: Short Circuit RecoveryC1 (Yellow): Output Voltage of Channel 1(20V/div)C4 (Green): Output Current for Channel 1 (200mA/div)Time Scale: 500μs/divPWM Dimming OperationPWM Dimming operation with an external TTL square wave signal is shown in Figs. 10-12. Fig. 10 shows the overall op-eration of the circuit with a PWM dimming input and Figs. 11 and 12 show the rise and fall times of the LED current during PWM dimming.In some cases, depending on the parasitic capacitance of the LED string, there may be narrow spike in the LED cur-rent during the rising edge. To prevent this spike from shut-ting down the HV9982 due to a short circuit condition being falsely detected, an internal 500ns blanking is provided in the IC. Fig. 13 shows the rising edge of the PWM dimming operation of the same LED driver with a different LED load (which has a significant parasitic capacitance).Fig. 10: PWM DimmingC1 (Yellow): PWM Dimming Input for Channel 1(5V/div)C4 (Green): Output Current for Channel 1 (50mA/div)Time Scale: 500μs/divFig. 11: PWM Dimming – Rise TimeC1 (Yellow): PWM Dimming Input for Channel 1(5V/div)C4 (Green): Output Current for Channel 1 (50mA/div)Time Scale: 1μs/divFig. 12: PWM Dimming – Fall TimeC1 (Yellow): PWM Dimming Input for Channel 1(5V/div)C4 (Green): Output Current for Channel 1 (50mA/div)Time Scale: 1μs/divFig. 13: Current Spike during PWM DimmingC1 (Yellow): PWM Dimming Input for Channel 1(5V/div)C4 (Green): Output Current for Channel 1 (50mA/div)Time Scale: 500ns/divAnalog Control of PWM DimmingThe operation of the analog control of PWM dimming is shown in Figs. 14-16. Fig. 14 shows the waveforms for op-eration in one of the modes (S1=HI; S2=HI), with no external SYNC signal applied. The plots in Figs. 15 and 16 show the operation with an external 350Hz synchronizing clock. Fig.15 shows the waveforms with S1=HI and S2=LO and Fig. 16 shows the waveforms with S1=HI and S2=HI. Fig. 17 shows the variation of the average LED current with the voltage at the PWMD pin in these modes of operation.Fig. 14: Analog Control of PWM Dimming w/o external clock (S1 = HI and S2 = HI)C3 (Blue): RAMP voltage (2V/div)C4 (Green): Output Current for Channel 1 (50mA/div)Time Scale: 1ms/divFig. 15: Analog Control of PWM Dimming synchronized to external clock (S1 = HI and S2 = LO)C1 (Yellow): External SYNC signal (5V/div)C2 (Pink): Signal at PWMD1 terminal (2V/div)C3 (Blue): RAMP voltage (2V/div)C4 (Green): Output Current for Channel 1 (50mA/div)Time Scale: 1ms/divFig. 16: Analog Control of PWM Dimming synchronized to external clock (S1 = HI and S2 = HI)C1 (Yellow): External SYNC signal (5V/div)C2 (Pink): Signal at PWMD1 terminal (2V/div)C3 (Blue): RAMP voltage (2V/div)C4 (Green): Output Current for Channel 1 (50mA/div)Time Scale: 1ms/divFig. 17: Analog Control of PWM Dimming - MeasurementsOutput Current vs. PWMD Voltage-20204060801001200 0.5 1.0 1.5 2PWMD Voltage (V)L E D C u r r e n t (m A )S1 = HI S2 = LO S1 = HI S2 = HICircuit Schematic - Part 1 of 3Circuit Schematic - Part 2 of 3Circuit Schematic - Part 3 of 3Supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications unless it receives an adequate “product liability indemnification insurance agreement.” Supertex inc. does not assume responsibility for use of devices described, and limits its liability to the replacement of the devices determined defective due to workmanship. No responsibility is assumed for possible omissions and inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications refer to the Supertex inc. (website: http//)©2013 Supertex inc. All rights reserved. Unauthorized use or reproduction is prohibited.Supertex inc.1235 Bordeaux Drive, Sunnyvale, CA 94089Tel: 11HV9982DB1Doc.# DSDB-HV9982DB1A032913。

Dimensions: [mm]Scale - 5:1Product Marking:Marking3R3 (Inductance Code)7440404203374404042033BC74404042033T e m p e r a t u r eT pT L74404042033Cautions and Warnings:The following conditions apply to all goods within the product series of WE-LQS of Würth Elektronik eiSos GmbH & Co. KG:General:•This electronic component is designed and manufactured for use in general electronic equipment.•Würth Elektronik must be asked for written approval (following the PPAP procedure) before incorporating the components into any equipment in fields such as military, aerospace, aviation, nuclear control, submarine, transportation (automotive control, train control, ship control), transportation signal, disaster prevention, medical, public information network etc. where higher safety and reliability are especially required and/or if there is the possibility of direct damage or human injury.•Electronic components that will be used in safety-critical or high-reliability applications, should be pre-evaluated by the customer. •The component is designed and manufactured to be used within the datasheet specified values. If the usage and operation conditions specified in the datasheet are not met, the wire insulation may be damaged or dissolved.•Do not drop or impact the components, the component may be damaged.•Würth Elektronik products are qualified according to international standards, which are listed in each product reliability report. Würth Elektronik does not warrant any customer qualified product characteristics beyond Würth Elektroniks’ specifications, for its validity and sustainability over time.•The responsibility for the applicability of the customer specific products and use in a particular customer design is always within the authority of the customer. All technical specifications for standard products also apply to customer specific products.Product specific:Soldering:•The solder profile must comply with the technical product specifications. All other profiles will void the warranty.•All other soldering methods are at the customers’ own risk.•Strong forces which may affect the coplanarity of the components’ electrical connection with the PCB (i.e. pins), can damage the part, resulting in avoid of the warranty.Cleaning and Washing:•Washing agents used during the production to clean the customer application might damage or change the characteristics of the wire insulation, marking or plating. Washing agents may have a negative effect on the long-term functionality of the product.•Using a brush during the cleaning process may break the wire due to its small diameter. Therefore, we do not recommend using a brush during the PCB cleaning process.Potting:•If the product is potted in the customer application, the potting material may shrink or expand during and after hardening. Shrinking could lead to an incomplete seal, allowing contaminants into the core. Expansion could damage the components. We recommend a manual inspection after potting to avoid these effects.Storage Conditions:• A storage of Würth Elektronik products for longer than 12 months is not recommended. Within other effects, the terminals may suffer degradation, resulting in bad solderability. Therefore, all products shall be used within the period of 12 months based on the day of shipment.•Do not expose the components to direct sunlight.•The storage conditions in the original packaging are defined according to DIN EN 61760-2.•The storage conditions stated in the original packaging apply to the storage time and not to the transportation time of the components. Packaging:•The packaging specifications apply only to purchase orders comprising whole packaging units. If the ordered quantity exceeds or is lower than the specified packaging unit, packaging in accordance with the packaging specifications cannot be ensured. Handling:•Violation of the technical product specifications such as exceeding the nominal rated current will void the warranty.•Applying currents with audio-frequency signals may result in audible noise due to the magnetostrictive material properties.•The temperature rise of the component must be taken into consideration. The operating temperature is comprised of ambient temperature and temperature rise of the component.The operating temperature of the component shall not exceed the maximum temperature specified.These cautions and warnings comply with the state of the scientific and technical knowledge and are believed to be accurate and reliable.However, no responsibility is assumed for inaccuracies or incompleteness.Würth Elektronik eiSos GmbH & Co. KGEMC & Inductive SolutionsMax-Eyth-Str. 174638 WaldenburgGermanyCHECKED REVISION DATE (YYYY-MM-DD)GENERAL TOLERANCE PROJECTIONMETHODChriB001.0072023-02-28DIN ISO 2768-1mDESCRIPTIONWE-LQS SMT Semi-ShieldedPower Inductor ORDER CODE74404042033SIZE/TYPE BUSINESS UNIT STATUS PAGEImportant NotesThe following conditions apply to all goods within the product range of Würth Elektronik eiSos GmbH & Co. KG:1. General Customer ResponsibilitySome goods within the product range of Würth Elektronik eiSos GmbH & Co. KG contain statements regarding general suitability for certain application areas. These statements about suitability are based on our knowledge and experience of typical requirements concerning the areas, serve as general guidance and cannot be estimated as binding statements about the suitability for a customer application. The responsibility for the applicability and use in a particular customer design is always solely within the authority of the customer. Due to this fact it is up to the customer to evaluate, where appropriate to investigate and decide whether the device with the specific product characteristics described in the product specification is valid and suitable for the respective customer application or not.2. Customer Responsibility related to Specific, in particular Safety-Relevant ApplicationsIt has to be clearly pointed out that the possibility of a malfunction of electronic components or failure before the end of the usual lifetime cannot be completely eliminated in the current state of the art, even if the products are operated within the range of the specifications.In certain customer applications requiring a very high level of safety and especially in customer applications in which the malfunction or failure of an electronic component could endanger human life or health it must be ensured by most advanced technological aid of suitable design of the customer application that no injury or damage is caused to third parties in the event of malfunction or failure of an electronic component. Therefore, customer is cautioned to verify that data sheets are current before placing orders. The current data sheets can be downloaded at .3. Best Care and AttentionAny product-specific notes, cautions and warnings must be strictly observed. Any disregard will result in the loss of warranty.4. Customer Support for Product SpecificationsSome products within the product range may contain substances which are subject to restrictions in certain jurisdictions in order to serve specific technical requirements. Necessary information is available on request. In this case the field sales engineer or the internal sales person in charge should be contacted who will be happy to support in this matter.5. Product R&DDue to constant product improvement product specifications may change from time to time. As a standard reporting procedure of the Product Change Notification (PCN) according to the JEDEC-Standard inform about minor and major changes. In case of further queries regarding the PCN, the field sales engineer or the internal sales person in charge should be contacted. The basic responsibility of the customer as per Section 1 and 2 remains unaffected.6. Product Life CycleDue to technical progress and economical evaluation we also reserve the right to discontinue production and delivery of products. As a standard reporting procedure of the Product Termination Notification (PTN) according to the JEDEC-Standard we will inform at an early stage about inevitable product discontinuance. According to this we cannot guarantee that all products within our product range will always be available. Therefore it needs to be verified with the field sales engineer or the internal sales person in charge about the current product availability expectancy before or when the product for application design-in disposal is considered. The approach named above does not apply in the case of individual agreements deviating from the foregoing for customer-specific products.7. Property RightsAll the rights for contractual products produced by Würth Elektronik eiSos GmbH & Co. KG on the basis of ideas, development contracts as well as models or templates that are subject to copyright, patent or commercial protection supplied to the customer will remain with Würth Elektronik eiSos GmbH & Co. KG. Würth Elektronik eiSos GmbH & Co. KG does not warrant or represent that any license, either expressed or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right relating to any combination, application, or process in which Würth Elektronik eiSos GmbH & Co. KG components or services are used.8. General Terms and ConditionsUnless otherwise agreed in individual contracts, all orders are subject to the current version of the “General Terms and Conditions of Würth Elektronik eiSos Group”, last version available at .Würth Elektronik eiSos GmbH & Co. KGEMC & Inductive SolutionsMax-Eyth-Str. 174638 WaldenburgGermanyCHECKED REVISION DATE (YYYY-MM-DD)GENERAL TOLERANCE PROJECTIONMETHODChriB001.0072023-02-28DIN ISO 2768-1mDESCRIPTIONWE-LQS SMT Semi-ShieldedPower Inductor ORDER CODE74404042033SIZE/TYPE BUSINESS UNIT STATUS PAGE。

LM3391. IntroductionThe LM339 is a quad, high-speed, differential comparator with TTL/CMOS compatible outputs. It is commonly used in various electronic circuits to compare voltages and generate digital outputs based on the comparison results. This document provides essential information about the LM339, including its features, pin configuration, electrical characteristics, and application examples.2. FeaturesThe LM339 offers several key features that make it popular among circuit designers:•Quad comparators: The LM339 includes four independent comparator circuits in a single package, providing flexibility in circuit design.•High-speed operation: With a response time of typically 1.3 μs, the LM339 is suitable for applications requiring fast voltage comparisons.•TTL/CMOS compatible outputs: The outputs of the LM339 are compatible with both TTL and CMOS logic families, allowing easy integration with digital circuits.•Wide supply voltage range: The LM339 can operate with a supply voltage ranging from 2 V to 36 V, making it suitable for a wide range ofapplications.•Low input bias current: The input bias current of the LM339 is typically 45 nA, ensuring accurate voltage comparisons even with highimpedance input sources.•Open collector outputs: The outputs of the LM339 are open collectors, providing flexibility in circuit design and allowing for wired-OR configurations.3. Pin ConfigurationThe LM339 is available in different packages, including DIP and SOP. The pin configuration of the LM339 in a DIP package is as follows:___________V+ | | GND----- | | ---------- | LM | ---------- | 339 | ---------- | | -----A |___________| BPin descriptions: - V+: Supply voltage input. - GND: Ground reference. - A, B: Inputs to the comparator circuits. These pins are typically connected to the voltages being compared.4. Electrical CharacteristicsThe LM339 has the following electrical characteristics:•Supply voltage range: 2 V to 36 V.•Input voltage range: -0.3 V to V+.•Differential input voltage: ±36 V.•Output current (sink): 16 mA.•Response time: typically 1.3 μs.•Input bias current: typically 45 nA.•Operating temperature range: -40°C to 85°C.5. Application Examples5.1 Voltage ComparatorOne common application of the LM339 is as a voltage comparator. In this application, two voltages are fed into the A and B inputs of one comparator. The output of the comparator changes based on the voltage comparison result. For example, if the voltage at A is higher than the voltage at B, the output will be high (near the supply voltage); otherwise, it will be low (near ground).5.2 Window ComparatorAnother useful application of the LM339 is as a window comparator. In this configuration, two comparators are used to compare a voltage with upper and lower thresholds. The LM339 can be used to trigger an alarm or control a system when the input voltage is within or outside the specified window.5.3 Zero Crossing DetectorThe LM339 can also be used as a zero crossing detector. In this application, the input voltage is typically a sinusoidal waveform. The LM339 compares the inputvoltage with a reference voltage and produces a digital output whenever the input voltage crosses the reference voltage.6. ConclusionThe LM339 is a versatile quad comparator that is commonly used in various electronic circuits. Its high-speed operation, compatibility with TTL/CMOS logic families, and wide supply voltage range make it suitable for a wide range of applications. This document provided an overview of the LM339, including its features, pin configuration, electrical characteristics, and application examples.。