NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series Programmable Precision References www.onsemi.com The NCP431/NCP432 integrated circuits are three−terminal programmable shunt regulator diodes. These monolithic IC voltage references operate as a low temperature coefficient zener which is programmable from Vref to 36 V using two external resistors. These devices exhibit a wide operating current range of 40 mA to 100 mA with a typical dynamic impedance of 0.22 W. The characteristics of these references make them excellent replacements for zener diodes in many applications such as digital voltmeters, power supplies, and op amp circuitry. The 2.5 V reference makes it convenient to obtain a stable reference from 5.0 V logic supplies, and since the NCP431/ NCP432 operates as a shunt regulator, it can be used as either a positive or negative voltage reference. Low minimum operating current makes this device an ideal choice for secondary regulators in SMPS adapters with extremely low no−load consumption. 12 TO−92 LP SUFFIX CASE 29−11 Pin 1. Reference 2. Anode 3. Cathode 3 SOIC−8 NB D SUFFIX CASE 751 8 1 Features 1 Cathode • Programmable Output Voltage to 36 V • Low Minimum Operating Current: 40 mA, Typ @ 25°C • Voltage Reference Tolerance: ±0.5%, Typ @ 25°C Anode Anode Anode Anode NC NC (Top View) (NCP431B/NCP432B) • Low Dynamic Output Impedance, 0.22 W Typical • Sink Current Capability of 40 mA to 100 mA • Equivalent Full−Range Temperature Coefficient of 50 ppm/°C • • • Reference Typical Temperature Compensated for Operation over Full Rated Operating Temperature Range SC Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable These are Pb−Free Devices 3 1 SOT−23−3 SN SUFFIX CASE 318 2 NCP431/SC431 Pin 1. Reference 2. Cathode 3. Anode NCP432/SC432 Pin 1. Cathode 2. Reference 3. Anode Typical Applications • • • • • ORDERING AND MARKING INFORMATION Voltage Adapters Switching Power Supply Precision Voltage Reference Charger Instrumentation © Semiconductor Components Industries, LLC, 2016 June, 2016 − Rev. 14 See detailed ordering and shipping information in the package dimensions section on page 14 of this data sheet. 1 Publication Order Number: NCP431/D NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series Reference (R) Cathode (K) Reference (R) Cathode (K) 2.5 V ref Anode (A) Anode (A) Figure 1. Symbol Figure 2. Representative Block diagram This device contains 20 active transistors MAXIMUM RATINGS (Full operating ambient temperature range applies, unless otherwise noted) Symbol VKA Rating Value Unit 37 V −100 to +150 mA −5 to +10 mA 150 °C Cathode to Anode Voltage IK Cathode Current Range, Continuous Iref Reference Input Current Range, Continuous TJ Operating Junction Temperature TA Operating Ambient Temperature Range −40 to +125 °C Tstg Storage Temperature Range −65 to +150 °C PD Total Power Dissipation @ TA = 25°C Derate above 25°C Ambient Temperature D, LP Suffix Plastic Package SN1 Suffix Plastic Package PD HBM CDM W 0.70 0.52 Total Power Dissipation @ TC = 25°C Derate above 25°C Case Temperature D, LP Suffix Plastic Package 1.5 ESD Rating (Note 1) Human Body Model per JEDEC JESD22−A114F Charged Device Model per JEDEC JESD22−C101E W V >2000 >1000 Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. This device contains latch−up protection and exceeds ±100 mA per JEDEC standard JESD78. RECOMMENDED OPERATING CONDITIONS Symbol VKA IK Min Max Unit Cathode to Anode Voltage Condition Vref 36 V Cathode Current 0.04 100 mA Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability. THERMAL CHARACTERISTICS Symbol Characteristic LP Suffix Package (50 mm2 x 35 mm Cu) D Suffix Package (50 mm2 x 35 mm Cu) SN Suffix Package (10 mm2 x 35 mm Cu) Unit RQJA Thermal Resistance, Junction−to−Ambient 176 210 255 °C/W RQJL Thermal Resistance, Junction−to−Lead (Lead 3) 75 68 80 °C/W www.onsemi.com 2 NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series ELECTRICAL CHARACTERISTICS (TA = 25°C, unless otherwise noted.) NCP431AC Symbol Vref Min Characteristic Reference Input Voltage VKA = Vref, IK = 1 mA TA = 25°C TA = Tlow to Thigh (Figure 3, Note 2) 2.475 2.500 2.525 2.475 2.500 2.525 Reference Input Voltage Deviation Over Temperature Range (Figure 3, Notes 3, 4) VKA= Vref, IK = 1 mA DVref DVKA Ratio of Change in Reference Input Voltage to Change in Cathode to Anode Voltage IK = 1 mA (Figure 4), DVKA = 10 V to Vref DVKA = 36 V to 10 V DIrefT Max Min Typ Max Min Typ Max Unit V DVrefT Iref Typ NCP431AV/ SC431AV NCP431AI − − − 2.475 2.500 2.525 2.475 2.500 2.525 2.465 2.500 2.525 2.460 2.500 2.525 − 5.0 10 − 10 15 mV mV/ V − − −1.85 −0.80 −3.1 −1.8 − − −1.85 −0.80 −3.1 −1.8 − − −1.85 −0.80 −3.1 −1.8 Reference Input Current (Figure 4) IK = 1 mA, R1 = 220 k, R2 = R TA = −40°C to +125°C − 81 190 − 81 190 − 81 190 Reference Input Current Deviation Over Temperature Range (Figure 4, Note 3) IK = 1 mA, R1 = 10 k, R2 = R − 22 55 − 22 55 − 22 55 nA nA Imin Minimum Cathode Current For Regulation VKA = Vref (Figure 3) − 40 60 − 40 60 − 40 60 mA Ioff Off−State Cathode Current (Figure 5) VKA = 36 V, Vref = 0 V − 180 1000 − 180 1000 − 180 1000 nA Dynamic Impedance (Figure 3, Note 5) VKA = Vref, DIK = 1.0 mA to 100 mA f v 1.0 kHz − 0.22 0.5 − 0.22 0.5 − 0.22 0.5 W |ZKA| 2. Tlow = −40°C for NCP431AI, NCP431AV, SC431AV = 0°C for NCP431AC Thigh = 70°C for NCP431AC = 85°C for NCP431AI = 125°C for NCP431AV, SC431AV 3. Guaranteed by design 4. The deviation parameter DVrefT is defined as the difference between the maximum and minimum values obtained over the full operating ambient temperature range that applies. ǒ The average temperature coefficient of the reference input voltage, Vref is defined as: V ppm ref ° C + DV V ref @25° C ref DT Ǔ 106 + A DV DT ref 10 6 ǒVref@25° CǓ A aVref can be positive or negative depending on whether Vref Min or Vref Max occurs at the lower ambient temperature. Example: DVrefT = 17 mV and slope is positive Vref = 2.5 V, DTA = 165°C (from −40°C to +125°C) aV ref + 0.017 @ 10 6 165 @ 2.5 + 41.2 ppmń° C 5. The dynamic impedance ZKA is defined as: (|ZKA| = (DVKA/DIK). When the device is programmed with two external resistors, R1 and R2, the total dynamic impedance of the circuit is defined as: |ZKA’| [ |ZKA| (1 + (R1/R2)). 6. SC431AVSNT1G − Tlow = −40°C, Thigh = 125°C. Guaranteed by design. SC Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable. www.onsemi.com 3 NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series ELECTRICAL CHARACTERISTICS (TA = 25°C, unless otherwise noted.) NCP431BC NCP432BC Symbol Vref Reference Input Voltage VKA = Vref, IK = 1 mA TA = 25°C TA = Tlow to Thigh (Figure 3, Note 7) DVrefT Reference Input Voltage Deviation Over Temperature Range (Figure 3, Notes 8, 9) VKA= Vref, IK = 1 mA DVref DVKA Ratio of Change in Reference Input Voltage to Change in Cathode to Anode Voltage IK = 1 mA (Figure 4), DVKA = 10 V to Vref DVKA = 36 V to 10 V Iref DIrefT Min Characteristic Typ NCP431BI NCP432BI Max Min Typ NCP/SC431BV NCP/SC432BV Max Min Typ Max Unit V 2.4875 2.500 2.5125 2.4875 2.500 2.5125 2.4875 2.500 2.5125 2.4875 2.500 2.5125 2.4775 2.500 2.5125 2.4725 2.500 2.5125 − − − − − − − 5.0 10 1− − − 10 15 15 mV mV/ V − − −1.85 −0.80 −3.1 −1.8 − − −1.85 −0.80 −3.1 −1.8 − − −1.85 −0.80 −3.1 −1.8 Reference Input Current (Figure 4) IK = 1 mA, R1 = 220 k, R2 = R TA = −40°C to +125°C − 81 190 − 81 190 − 81 190 Reference Input Current Deviation Over Temperature Range (Figure 4, Note 8) IK = 1 mA, R1 = 10 k, R2 = R − 22 55 − 22 55 − 22 55 nA nA Imin Minimum Cathode Current For Regulation VKA = Vref (Figure 3) − 40 60 − 40 60 − 40 60 mA Ioff Off−State Cathode Current (Figure 5) VKA = 36 V, Vref = 0 V − 180 1000 − 180 1000 − 180 1000 nA Dynamic Impedance (Figure 3, Note 10) VKA = Vref, DIK = 1.0 mA to 100 mA f v 1.0 kHz − 0.22 0.5 − 0.22 0.5 − 0.22 0.5 W |ZKA| 7. Tlow = −40°C for NCP431BI, NCP431BV, NCP432BI, NCP432BV, SC431B, SC432B = 0°C for NCP431BC, NCP432BC Thigh = 70°C for NCP431BC, NCP432BC = 85°C for NCP431BI, NCP432BI = 125°C for NCP431BV, NCP432BV, SC431BV, SC432BV 8. Guaranteed by design 9. The deviation parameter DVrefT is defined as the difference between the maximum and minimum values obtained over the full operating ambient temperature range that applies. ǒ The average temperature coefficient of the reference input voltage, Vref is defined as: V ppm ref ° C + DV V ref @25° C ref DT Ǔ 106 + A DV DT ref 10 6 ǒVref@25° CǓ A aVref can be positive or negative depending on whether Vref Min or Vref Max occurs at the lower ambient temperature. Example: DVrefT = 17 mV and slope is positive Vref = 2.5 V, DTA = 165°C (from −40°C to +125°C) aV ref + 0.017 @ 10 6 165 @ 2.5 + 41.2 ppmń° C 10. The dynamic impedance ZKA is defined as: (|ZKA| = (DVKA/DIK). When the device is programmed with two external resistors, R1 and R2, the total dynamic impedance of the circuit is defined as: |ZKA’| [ |ZKA| (1 + (R1/R2)) 11. SC431BVSNT1G, SC432BVSNT1G − Tlow = −40°C, Thigh = 125°C. Guaranteed by design. SC Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable. Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. www.onsemi.com 4 NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series Input Input VKA V KA Input V KA IK Ioff R1 Iref IK Vref R2 V Figure 3. Test Circuit for VKA = Vref KA +V ref Figure 4. Test Circuit for VKA > Vref 60.0 150.0 Input 100.0 IK, CATHODE CURRENT (mA) VKA = Vref TA = 25°C VKA IK 50.0 0.0 Figure 5. Test Circuit for Ioff VKA = Vref TA = 25°C Input 40.0 VKA IMin IK 20.0 0.0 −20.0 −50.0 −100.0 −1.0 −40.0 0.0 1.0 2.0 3.0 −60.0 −1.0 0.0 VKA, CATHODE VOLTAGE (V) 1.0 Figure 7. Cathode Current versus Cathode Voltage 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 −50 −25 2.0 VKA, CATHODE VOLTAGE (V) Figure 6. Cathode Current versus Cathode Voltage IMIN, (mA) IK, CATHODE CURRENT (mA) ǒ1 ) R1 Ǔ ) Iref @ R1 R2 Vref 0 25 50 75 100 125 TA, AMBIENT TEMPERATURE (°C) Figure 8. Minimum Cathode Current Regulation versus Ambient Temperature www.onsemi.com 5 3.0 VKA = Vref IK = 1 mA VKA Input Iref, REFERENCE INPUT CURRENT (nA) 2540 2530 IK 2520 Vref 2510 2500 2490 2480 2470 2460 −50 −25 0 25 50 75 100 125 Input IK = 1 mA VKA 110 IK 220k 100 Iref 90 80 70 60 50 40 −50 −25 0 25 50 75 100 125 TA, AMBIENT TEMPERATURE (°C) TA, AMBIENT TEMPERATURE (°C) Figure 10. Reference Input Current versus Ambient temperature 0 Input VKA IK R1 −10 R2 Vref −20 −30 VKA = Vref IK = 1 mA −40 0 10 20 30 40 100 VKA = 36V V ref = 0V Input VKA Ioff 10 1 −50 −25 0 25 50 75 100 125 VKA, CATHODE VOLTAGE (V) TA, AMBIENT TEMPERATURE (°C) Figure 11. Change in Reference Input Voltage versus Cathode Voltage Figure 12. Off−State Cathode Current versus Ambient Temperature 10 0.320 1.0k Output |ZKA|, DYNAMIC IMPEDANCE (W) |ZKA|, DYNAMIC IMPEDANCE (W) 120 Figure 9. Reference Input Voltage versus Ambient temperature Ioff, OFF−STATE CATHODE CURRENT (nA) DVref, REFERENCE INPUT VOLTAGE (mV) Vref, REFERENCE INPUT VOLTAGE (mV) NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series IK 50 GND 1 DIK = 1 mA to 100 mA TA = 25°C 0.1 0.001 0.01 0.1 1 f, FREQUENCY (MHz) 10 0.300 0.280 0.260 VKA = V ref DI K = 1.0 mA to 100mA f<1.0 kHz 0.240 Output 1.0k 50 0.220 GND 0.200 −50 100 Figure 13. Dynamic Impedance versus Frequency IK −25 0 25 50 75 100 TA, AMBIENT TEMPERATURE (°C) 125 Figure 14. Dynamic Impedance versus Ambient Temperature www.onsemi.com 6 60 800 Output 50 9.0mF 40 IK 15k 230 NOISE VOLTAGE (nV/√HZ) AVOL, OPEN LOOP VOLTAGE GAIN (dB) NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series 8.25k GND 30 20 10 0 IK = 100 mA to 10 mA TA = 25°C 700 600 500 400 300 10k 100 100k f, FREQUENCY (Hz) 1M 10M 10 100 1000 10k f, FREQUENCY (Hz) Figure 15. Open−Loop Voltage Gain versus Frequency Figure 16. Spectral Noise Density Input Monitor 220 3.0 2.0 Pulse Generator f = 100kHz Output Output IK, CATHODE CURRENT (mA) 4.0 VOLTAGE SWING (V) VKA IK 200 0 −10 1000 VKA = V ref IK = 1 mA Input TA = 25°C 50 GND 1.0 10 5.0 Input 0 0 4.0 8.0 12 16 20 24 t, TIME (ms) 28 32 36 40 CL, LOAD CAPACITANCE (nF) Figure 17. Pulse Response Figure 18. Stability Boundary Conditions Figure 19. Stability Boundary Conditions for Small Cathode Current www.onsemi.com 7 100k NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series 150 150 VOUT VOUT IK V+ IK V+ CL Figure 20. Test Circuit For Curve A of Stability Boundary Conditions 10k CL Figure 21. Test Circuit For Curve B And C of Stability Boundary Conditions www.onsemi.com 8 NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series TYPICAL APPLICATIONS V+ V+ VOUT VOUT R1 IK R1 CL R2 R2 V OUT ǒ + 1) R1 R2 Ǔ Vref V Figure 22. Shunt Regulator OUT ǒ + 1) R1 R2 Ǔ Vref Figure 23. High Current Shunt Regulator V+ VOUT MC7805 V+ In Out Common VOUT R1 R1 R2 R2 V V OUT ǒ + 1) OUT(min) R1 R2 +V Ǔ Vref ref V ) 5.0 V V V Figure 24. Output Control for a Tree−Terminal Fixed Regulator OUT ǒ + 1) IN(min) +V OUT(min) R1 R2 Ǔ Vref OUT +V )V be ref Figure 25. Series Pass Regulator V+ ISink RCL IOUT V+ V I V I OUT + R ref Sink + ref Rs RS CL Figure 26. Constant Current Source Figure 27. Constant Current Sink www.onsemi.com 9 NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series VOUT V+ V ǒ (trip) + 1 ) OUT R1 R2 VOUT V+ R1 R1 R2 R2 Ǔ Vref V Figure 28. Triac Crowbar R1 R2 Ǔ Vref Figure 29. SRC Crowbar V+ VOUT V+ R1 I ǒ (trip) + 1 ) OUT R3 R1 VOUT VIN VIN R2 R4 V th +V VOUT < Vref V+ > Vref [2.0 V ref Figure 31. Single−Supply Comparator with Temperature−Compensated Threshold L.E.D. indicator is ‘on’ when V+ is between the uppper and lower limits. ǒ Lower Limit + 1 ) ǒ Upper Limit + 1 ) R1 R2 R3 R4 ǓVref ǓVref Figure 30. Voltage Monitoring 150 mH @ 2.0 A Vin = 10 to 20 V TIP115 VOUT = 5.0 V IOUT = 1.0 A 1.0k 1N5823 4.7 k 4.7k 100k MPSA20 2200 mF 0.1 mF 470 mF 0.01 mF 4.7k 2.2k 51k 10 Figure 32. Step−Down Switching Converter www.onsemi.com 10 NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series APPLICATIONS INFORMATION The NCP431/NCP432 is a programmable precision reference which is used in a variety of ways. It serves as a reference voltage in circuits where a non−standard reference voltage is needed. Other uses include feedback control for driving an optocoupler in power supplies, voltage monitor, constant current source, constant current sink and series pass regulator. In each of these applications, it is critical to maintain stability of the device at various operating currents and load capacitances. In some cases the circuit designer can estimate the stabilization capacitance from the stability boundary conditions curve provided in Figure 18. However, these typical curves only provide stability information at specific cathode voltages and at a specific load condition. Additional information is needed to determine the capacitance needed to optimize phase margin or allow for process variation. A simplified model of the NCP431/NCP432 is shown in Figure 33. When tested for stability boundaries, the load resistance is 150 W. The model reference input consists of an input transistor and a dc emitter resistance connected to the device anode. A dependent current source, Gm, develops a current whose amplitude is determined by the difference between the 1.78 V internal reference voltage source and the input transistor emitter voltage. A portion of Gm flows through compensation capacitance, CP2. The voltage across CP2 drives the output dependent current source, Go, which is connected across the device cathode and anode. Model component values are: Vref = 1.78 V Gm = 0.3 + 2.7 exp (−IC/26 mA) where IC is the device cathode current and Gm is in mhos Go = 1.25 (Vcp2) mmhos. Resistor and capacitor typical values are shown on the model. Process tolerances are ±20% for resistors, ±10% for capacitors, and ±40% for transconductances. An examination of the device model reveals the location of circuit poles and zeroes: P1 + P2 + Z1 + 1 1 + + 7.96 kHz 2pR GMC P1 2p @ 1.0M @ 20 pF 1 2pR P2C P2 + 1 2p @ 10M @ 0.265 pF + 60 kHz 1 1 + + 500 kHz 2pR Z1C P1 2p @ 15.9k @ 20 pF In addition, there is an external circuit pole defined by the load: PL + 1 2pR LC L Also, the transfer dc voltage gain of the NCP431 is: G + G MR GMGoR L Example 1: IC=10 mA, RL= 230 W,CL= 0. Define the transfer gain. The DC gain is: G + G MR GMGoR L + (2.138)(1.0M)(1.25m)(230) + 615 + 56 dB Loop gain + G 8.25k 8.25k ) 15k + 218 + 47 dB The resulting transfer function Bode plot is shown in Figure 34. The asymptotic plot may be expressed as the following equation: Av + 615 ǒ1 ) ǒ1 ) jf 8.0 kHz jf 500 kHz Ǔ Ǔǒ1 ) jf 60 kHz Ǔ The Bode plot shows a unity gain crossover frequency of approximately 600 kHz. The phase margin, calculated from the equation, would be 55.9°. This model matches the Open−Loop Bode Plot of Figure 15. The total loop would have a unity gain frequency of about 300 kHz with a phase margin of about 44°. Figure 33. Simplified NCP431/NCP432 Device Model www.onsemi.com 11 NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series NCP431/NCP432 OPEN−LOOP VOLTAGE GAIN VERSUS FREQUENCY NCP431/NCP432 OPEN−LOOP BODE PLOT WITH LOAD CAP Figure 35. Example 2 Circuit Open Loop Gain Plot Figure 34. Example 1 Circuit Open Loop Gain Plot With three poles, this system is unstable. The only hope for stabilizing this circuit is to add a zero. However, that can only be done by adding a series resistance to the output capacitance, which will reduce its effectiveness as a noise filter. Therefore, practically, in reference voltage applications, the best solution appears to be to use a smaller value of capacitance in low noise applications or a very large value to provide noise filtering and a dominant pole rolloff of the system. Example 2. IC = 7.5 mA, RL = 2.2 kW, CL = 0.01 mF. Cathode tied to reference input pin. An examination of the data sheet stability boundary curve (Figure 18) shows that this value of load capacitance and cathode current is on the boundary. Define the transfer gain. The DC gain is: G + G MR GMGoR L + (2.138)(1.0M)(1.25m)(230) + 6389 + 76 dB The NCP431/NCP432 is often used as a regulator in secondary side of a switch mode power supply (SMPS). The benefit of this reference is high and stable gain under low bias currents. Figure 36 shows dependence of the gain (dynamic impedance) on the bias current. Value of minimum cathode current that is needed to assure stable gain is 80 mA maximum. The resulting open loop Bode plot is shown in Figure 35. The asymptotic plot may be expressed as the following equation: Av + 615 ǒ1 ) jf 8.0 kHz ǒ1 ) 500 kHz Ǔǒ1 ) 60 kHz jf jf Ǔ Ǔǒ1 ) jf 7.2 kHz Ǔ Note that the transfer function now has an extra pole formed by the load capacitance and load resistance. Note that the crossover frequency in this case is about 250 kHz, having a phase margin of about −46°. Therefore, instability of this circuit is likely. www.onsemi.com 12 NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series Figure 37. SMPS Secondary Side and Feedback Connection on Primary Side Figure 36. Knee of Reference Regulator with TL431 or other references in secondary side of a SMPS needs bias resistor to increase cathode current to reach high and stable gain (refer to Figure 37). This bias resistor does not have to be used in regulator with NCP431/NCP432 thanks to its low minimum cathode current. The NCP431/NCP432 operates with very low leakage and reference input current. Sum of these currents is lower than 100 nA. Regulator with the NCP431/NCP432 minimizes parasitic power consumption. The best way to achieve extremely low no−load consumption in SMPS applications is to use NCP431/NCP432 as regulator on the secondary side. The consumption is reduced by minimum parasitic consumption and very low bias current of NCP431/NCP432. www.onsemi.com 13 NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series MARKING DIAGRAMS NCP43 1xxxx YWW G G 8 N431xx ALYW G xxx MG G 1 1 xx, xxx, xxx = Specific Device Code A = Assembly Location L = Wafer Lot Y = Year M = Date Code W, WW = Work Week G = Pb−Free Package (Note: Microdot may be in either location) ORDERING INFORMATION Operating Temperature Range Package Shipping† 1% SOIC−8 (Pb−Free) 2500 / Tape & Reel VRF 1% SOT−23−3 (Pb−Free) 3000 / Tape & Reel NCP431BCSNT1G VRJ 0.5% SOT−23−3 (Pb−Free) 3000 / Tape & Reel NCP432BCSNT1G VRM 0.5% SOT−23−3 (Pb−Free) 3000 / Tape & Reel ACLP 1% TO−92 (TO−226) (Pb−Free) 2000 / Tape & Reel NCP431AIDR2G AI 1% SOIC−8 (Pb−Free) 2500 / Tape & Reel NCP431AISNT1G VRG 1% SOT−23−3 (Pb−Free) 3000 / Tape & Reel NCP431BISNT1G VRK 0.5% SOT−23−3 (Pb−Free) 3000 / Tape & Reel NCP432BISNT1G VRN 0.5% SOT−23−3 (Pb−Free) 3000 / Tape & Reel NCP431AILPRAG AILP 1% TO−92 (TO−226) (Pb−Free) 2000 / Tape & Reel NCP431AVDR2G AV 1% SOIC−8 (Pb−Free) 2500 / Tape & Reel NCP431AVSNT1G / SC431AVSNT1G* VRH 1% SOT−23−3 (Pb−Free) 3000 / Tape & Reel NCP431AVLPRAG AVLP 1% TO−92 (TO−226) (Pb−Free) 2000 / Tape & Reel NCP431AVLPG AVLP 1% TO−92 (TO−226) (Pb−Free) 2000 Units / Bag NCP431BVSNT1G / SC431BVSNT1G* VRL 0.5% SOT−23−3 (Pb−Free) 3000 / Tape & Reel NCP432BVSNT1G / SC432BVSNT1G* VRP 0.5% SOT−23−3 (Pb−Free) 3000 / Tape & Reel Device Marking Tolerance NCP431ACDR2G AC NCP431ACSNT1G NCP431ACLPRAG 0°C to 70°C −40°C to 85°C −40°C to 125°C †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. *SC Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable. www.onsemi.com 14 NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series PACKAGE DIMENSIONS TO−92 (TO−226) CASE 29−11 ISSUE AN A B STRAIGHT LEAD R P NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. CONTOUR OF PACKAGE BEYOND DIMENSION R IS UNCONTROLLED. 4. LEAD DIMENSION IS UNCONTROLLED IN P AND BEYOND DIMENSION K MINIMUM. L SEATING PLANE K D X X G J H V C SECTION X−X 1 N DIM A B C D G H J K L N P R V INCHES MIN MAX 0.175 0.205 0.170 0.210 0.125 0.165 0.016 0.021 0.045 0.055 0.095 0.105 0.015 0.020 0.500 --0.250 --0.080 0.105 --0.100 0.115 --0.135 --- MILLIMETERS MIN MAX 4.45 5.20 4.32 5.33 3.18 4.19 0.407 0.533 1.15 1.39 2.42 2.66 0.39 0.50 12.70 --6.35 --2.04 2.66 --2.54 2.93 --3.43 --- N A R BENT LEAD B P NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTROLLING DIMENSION: MILLIMETERS. 3. CONTOUR OF PACKAGE BEYOND DIMENSION R IS UNCONTROLLED. 4. LEAD DIMENSION IS UNCONTROLLED IN P AND BEYOND DIMENSION K MINIMUM. T SEATING PLANE K D X X G J V 1 C SECTION X−X N www.onsemi.com 15 DIM A B C D G J K N P R V MILLIMETERS MIN MAX 4.45 5.20 4.32 5.33 3.18 4.19 0.40 0.54 2.40 2.80 0.39 0.50 12.70 --2.04 2.66 1.50 4.00 2.93 --3.43 --- NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series PACKAGE DIMENSIONS SOIC−8 NB CASE 751−07 ISSUE AK NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. 6. 751−01 THRU 751−06 ARE OBSOLETE. NEW STANDARD IS 751−07. −X− A 8 5 S B 0.25 (0.010) M Y M 1 4 K −Y− G C N DIM A B C D G H J K M N S X 45 _ SEATING PLANE −Z− 0.10 (0.004) H M D 0.25 (0.010) M Z Y S X J S SOLDERING FOOTPRINT* 1.52 0.060 7.0 0.275 4.0 0.155 0.6 0.024 1.270 0.050 SCALE 6:1 mm Ǔ ǒinches *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. www.onsemi.com 16 MILLIMETERS MIN MAX 4.80 5.00 3.80 4.00 1.35 1.75 0.33 0.51 1.27 BSC 0.10 0.25 0.19 0.25 0.40 1.27 0_ 8_ 0.25 0.50 5.80 6.20 INCHES MIN MAX 0.189 0.197 0.150 0.157 0.053 0.069 0.013 0.020 0.050 BSC 0.004 0.010 0.007 0.010 0.016 0.050 0 _ 8 _ 0.010 0.020 0.228 0.244 NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series PACKAGE DIMENSIONS SOT−23 (TO−236) CASE 318−08 ISSUE AP NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH THICKNESS. MINIMUM LEAD THICKNESS IS THE MINIMUM THICKNESS OF BASE MATERIAL. 4. DIMENSIONS D AND E DO NOT INCLUDE MOLD FLASH, PROTRUSIONS, OR GATE BURRS. D SEE VIEW C 3 HE E DIM A A1 b c D E e L L1 HE q c 1 2 b 0.25 e q A L A1 MIN 0.89 0.01 0.37 0.09 2.80 1.20 1.78 0.10 0.35 2.10 0° MILLIMETERS NOM MAX 1.00 1.11 0.06 0.10 0.44 0.50 0.13 0.18 2.90 3.04 1.30 1.40 1.90 2.04 0.20 0.30 0.54 0.69 2.40 2.64 −−− 10 ° MIN 0.035 0.001 0.015 0.003 0.110 0.047 0.070 0.004 0.014 0.083 0° INCHES NOM 0.040 0.002 0.018 0.005 0.114 0.051 0.075 0.008 0.021 0.094 −−− MAX 0.044 0.004 0.020 0.007 0.120 0.055 0.081 0.012 0.029 0.104 10° L1 VIEW C SOLDERING FOOTPRINT* 0.95 0.037 0.95 0.037 2.0 0.079 0.9 0.035 SCALE 10:1 0.8 0.031 mm Ǔ ǒinches *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. 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