MC34161 - Universal Voltage Monitors - ON Semiconductor

1 DATA Semiconductor Components Industries, LLC, 2015 August, 2021 Rev. 141 Publication Order Number: MC34161 /DUniversal Voltage MonitorsMC34161, MC33161,NCV33161 The MC34161 /MC33161 are Universal Voltage Monitors intendedfor use in a wide variety of Voltage sensing applications. These devicesoffer the circuit designer an economical solution for positive andnegative Voltage detection. The circuit consists of two comparatorchannels each with hysteresis, a unique Mode Select Input for channelprogramming, a pinned out V reference, and two open collectoroutputs capable of sinking in excess of 10 mA. Each comparatorchannel can be configured as either inverting or noninverting by theMode Select Input. This allows over, under, and window detection ofpositive and negative voltages. The minimum supply Voltage neededfor these devices to be fully functional is V for positive voltagesensing and V for negative Voltage include direct monitoring of positive and negativevoltages used in appliance, automotive, consumer, and Unique Mode Select Input Allows Channel Programming Over, Under, and Window Voltage Detection Positive and Negative Voltage Detection Fully Functional at V for Positive Voltage Sensing and Vfor Negative Voltage Sensing Pinned Out V Reference with Current Limit Protection Low Standby Current Open Collector Outputs for Enhanced Device Flexibility NCV Prefix for Automotive and Other Applications RequiringUnique Site and Control Change Requirements; AEC Q100 Qualified and PPAP Capable These Devices are Pb Free and are RoHS CompliantFigure 1.

2 Simplified Block Diagram(Positive Voltage Window Detector Application)617VS23+ V+ V+ V+ V+ VReference-+-++-4 This device contains141 8P SUFFIXCASE 6261 SOIC 8D SUFFIXCASE 7511 MARKINGDIAGRAMSx= 3 or 4A= Assembly LocationWL, L= Wafer LotYY, Y= YearWW, W = Work WeekG or G= Pb Free PackagePIN CONNECTIONSVrefInput 1 Input 2 GNDVCCMode SelectOutput 1 Output 212348765(TOP VIEW)18MC3x161 PAWLYYWWGSee detailed ordering and shipping information in the packagedimensions section on page 15 of this data INFORMATIONM icro8tDM SUFFIXCASE 846A181x161 AYWGG(Note: Microdot may be in either location)3x161 ALYWG18MC34161, MC33161, RATINGS (Note 1)RatingSymbolValueUnitPower Supply Input VoltageVCC40 VComparator Input Voltage RangeVin to +40 VComparator Output Sink Current (Pins 5 and 6) (Note 2)ISink20mAComparator Output VoltageVout40 VPower Dissipation and Thermal Characteristics (Note 2)P Suffix, Plastic Package, Case 626 Maximum Power Dissipation @ TA = 70 CThermal Resistance, Junction to AirD Suffix, Plastic Package, Case 751 Maximum Power Dissipation @ TA = 70 CThermal Resistance, Junction to AirDM Suffix, Plastic Package, Case 846 AThermal Resistance, Junction to AmbientPDRqJAPDRqJARqJA800100450178240mW C/WmW C/W C/WOperating Junction TemperatureTJ+150 COperating Ambient Temperature (Note 3)MC34161MC33161 NCV33161TA0 to +70 40 to +105 40 to +125 CStorage Temperature RangeTstg 55 to +150 CStresses exceeding those listed in the Maximum Ratings table may damage the device.

3 If any of these limits are exceeded, device functionalityshould not be assumed, damage may occur and reliability may be This device series contains ESD protection and exceeds the following tests: Human Body Model 2000 V per MIL STD 883, Method 3015. Machine Model Method 200 Maximum package power dissipation must be Tlow=0 C for MC34161 Thigh = +70 C for MC34161 40 C for MC33161+105 C for MC33161 40 C for NCV33161+125 C for NCV33161MC34161, MC33161, CHARACTERISTICS (VCC = V, for typical values TA = 25 C, for min/max values TA is the operating ambienttemperature range that applies [Notes 4 and 5], unless otherwise noted.)CharacteristicsSymbolMinTypMaxUni tCOMPARATOR INPUTST hreshold Voltage , Vin Increasing (TA = 25 C)(TA = Tmin to Tmax) Voltage Variation (VCC = V to 40 V)DVth Hysteresis, Vin DecreasingVH152535mVThreshold Difference |Vth1 Vth2|VD to Threshold Difference (Vref Vin1), (Vref Vin2) Bias Current (Vin = V)(Vin = V)IIB 4085200400nAMODE SELECT INPUTMode Select Threshold Voltage (Figure 6)Channel 1 Channel 2 Vth(CH 1)Vth(CH 2)Vref+ + + OUTPUTSO utput Sink Saturation Voltage (ISink = mA)(ISink = 10 mA)(ISink = mA, VCC = V)VOL State Leakage Current (VOH = 40 V)IOH OUTPUTO utput Voltage (IO = 0 mA, TA = 25 C) Regulation (IO = 0 mA to mA)Regload Regulation (VCC = V to 40 V)Regline Output Variation over Line, Load, and Circuit CurrentISC DEVICEP ower Supply Current (VMode, Vin1, Vin2 = GND)(VCC = V)(VCC = 40 V)ICC 450560700900mAOperating Voltage Range (Positive Sensing)(Negative Sensing)

4 4040 VProduct parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Productperformance may not be indicated by the Electrical Characteristics if operated under different Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as Tlow=0 C for MC34161 Thigh=+70 C for MC34161 40 C for MC33161+105 C for MC33161 40 C for NCV33161+125 C for NCV33161MC34161, MC33161, , CHANNEL OUTPUT Voltage (V)TA = 25 CTA = -40 CTA = -40 CTA = 85 CTA = 85 2 ThresholdChannel 1 ThresholdVCC = VRL = 10 k to VCCVMode, MODE SELECT INPUT Voltage (V)TA = 25 CFigure 2. Comparator Input Threshold VoltageVCC = VRL = 10 k to VCCTA = 25 CVTA = -40 CTA = 85 CTA = 25 , INPUT Voltage (V)out, OUTPUT Voltage (V)TA = 85 CTA = 25 CTA = -40 CFigure 3. Comparator Input Bias Currentversus Input VMode = GND, Output Falling2. VMode = VCC, Output Rising3. VMode = VCC, Output Falling4.

5 VMode = GND, Output RisingVCC = VTA = 25 , OUTPUT PROPAGATION DELAY TIME (ns)PHLtPERCENT OVERDRIVE (%)Figure 4. Output Propagation Delay Timeversus Percent OverdriveFigure 5. Output Voltage versus Supply VoltageI , INPUT BIAS CURRENT (nA)IBVCC = VVMode = GNDTA = 25 , INPUT Voltage (V)Figure 6. Mode Select , SUPPLY Voltage (V)Vout, OUTPUT Voltage (V)TA = -40 CTA = -25 CTA = -85 CFigure 7. Mode Select Input Currentversus Input = VTA = 25 CVMode, MODE SELECT INPUT Voltage (V) , MODE SELECT INPUT CURRENT ( A) ModeIUndervoltage DetectorProgrammed to trip at VR1 = k, R2 = kRL = 10 k to VCCR efer to Figure 17MC34161, MC33161, , OUTPUT SATURATION Voltage (V)refV, REFERENCE Voltage (V)Figure 8. Reference Voltageversus Supply VoltageVMode = GNDTA = 25 C10302040 VCC, SUPPLY Voltage (V)Figure 9. Reference Voltageversus Ambient Temperature, REFERENCE Voltage CHANGE (mV) , REFERENCE SOURCE CURRENT (mA) 85 CTA= 25 CVCC = VVMode = GNDTA= -40 CFigure 10.

6 Reference Voltage Changeversus Source Current100 VCC, SUPPLY Voltage (V)203040, SUPPLY CURRENT (mA)CCIVMode = GNDPins 2, 3 = VVMode = VrefPin 1 = VPin 2 = GNDICC measured at Pin 8TA = 25 CVMode = VCCPins 2, 3 =GNDF igure 11. Output Saturation Voltageversus Output Sink CurrentFigure 12. Supply Current versusSupply VoltageFigure 13. Supply Currentversus Output Sink Current, REFERENCE OUTPUT Voltage (V)refVVCC = VVMode = GNDTA, AMBIENT TEMPERATURE ( C)-55-250255075100125 Vref Min = VVref Typ = VVref Max = , OUTPUT SINK CURRENT (mA) = 85 CTA = 25 CTA = -40 CVCC = VVMode = GNDVCC = VVMode = GNDTA = 25 , OUTPUT SINK CURRENT (mA) , INPUT SUPPLY CURRENT (mA) , MC33161, 14. MC34161 Representative Block + + +--++ + ++-41 Vref65 Output 1 Output 2 Mode Select7 Input 12 Input 23 GNDC hannel 1 Channel 2 Mode SelectPin 7 Input 1 Pin 2 Output 1 Pin 6 Input 2 Pin 3 Output 2 Pin 5 CommentsGND01010101 Channels 1 & 2: NoninvertingVref01010110 Channel 1: NoninvertingChannel 2: InvertingVCC (> V)01100110 Channels 1 & 2: InvertingFigure 15.

7 Truth TableMC34161, MC33161, DESCRIPTIONI ntroductionTo be competitive in today s electronic equipment market,new circuits must be designed to increase system reliabilitywith minimal incremental cost. The circuit designer can takea significant step toward attaining these goals byimplementing economical circuitry that continuouslymonitors critical circuit voltages and provides a fault signalin the event of an out of tolerance condition. TheMC34161, MC33161 series are Universal Voltage monitorsintended for use in a wide variety of Voltage sensingapplications. The main objectives of this series was toconfigure a device that can be used in as many voltagesensing applications as possible while minimizing cost. Theflexibility objective is achieved by the utilization of a uniqueMode Select input that is used in conjunction withtraditional circuit building blocks. The cost objective isachieved by processing the device on a standard BipolarAnalog flow, and by limiting the package to eight pins.

8 Thedevice consists of two comparator channels each withhysteresis, a mode select input for channel programming, apinned out reference, and two open collector outputs. Eachcomparator channel can be configured as either inverting ornoninverting by the Mode Select input. This allows a singledevice to perform over, under, and window detection ofpositive and negative voltages. A detailed description ofeach section of the device is given below with therepresentative block diagram shown in Figure ComparatorsThe input comparators of each channel are identical, eachhaving an upper threshold Voltage of V with25 mV of hysteresis. The hysteresis is provided to enhanceoutput switching by preventing oscillations as thecomparator thresholds are crossed. The comparators have aninput bias current of 60 nA at their threshold whichapproximates a MW resistor to ground. This highimpedance minimizes loading of the external voltagedivider for well defined trip points.

9 For all positive voltagesensing applications, both comparator channels are fullyfunctional at a VCC of V. In order to provide enhanceddevice ruggedness for hostile industrial environments,additional circuitry was designed into the inputs to preventdevice latchup as well as to suppress electrostatic discharges(ESD).ReferenceThe V reference is pinned out to provide a means forthe input comparators to sense negative voltages, as well asa means to program the Mode Select input for windowdetection applications. The reference is capable of sourcingin excess of mA output current and has built in shortcircuit protection. The output Voltage has a guaranteedtolerance of at room V reference is derived by gaining up the V reference by a factor of two. With a power supplyvoltage of V, the V reference is in full regulation,allowing the device to accurately sense negative Select CircuitThe key feature that allows this device to be flexible is theMode Select input.

10 This input allows the user to programeach of the channels for various types of Voltage sensingapplications. Figure 15 shows that the Mode Select input hasthree defined states. These states determine whetherChannel 1 and/or Channel 2 operate in the inverting ornoninverting mode. The Mode Select thresholds are shownin Figure 6. The input circuitry forms a tristate switch withthresholds at V and Vref + V. The mode select inputcurrent is 10 mA when connected to the reference output, and42 mA when connected to a VCC of V, refer to Figure StageThe output stage uses a positive feedback base boostcircuit for enhanced sink saturation, while maintaining arelatively low device standby current. Figure 11 shows thatthe sink saturation Voltage is about V at mA overtemperature. By combining the low output saturationcharacteristics with low Voltage comparator operation, thisdevice is capable of sensing positive voltages at a VCC V.