LM2931AZ50

LM2931 Datasheet Very low drop voltage regulators with inhibit function Features DPAK TO-92 S O-8 • • • • • • • • • • AEC-Q100 qualified (DPAK only) Very low dropout voltage (90 mV typ. at 10 mA load) Low quiescent current (typ. 2.5 mA, at 100 mA load) Output current up to 100 mA Adjustable (from VOUT = 2.5 V only SO-8) and fixed (3.3 V and 5 V) output voltage version Internal current and thermal limit Load dump protection up to 60 V Reverse transient protection up to - 50 V Temperature range: - 40 to 125 °C Package available: TO-92, DPAK, SO-8 (with inhibit control) Description Maturity status link LM2931 The LM2931 are very low drop regulators. The very low drop voltage and the low quiescent current make them particular suitable for low noise, low power applications and in battery-powered systems. In the 8-pin configuration (SO-8), fully compatible with the older L78L family, a shutdown logic control function is available. This means that when the device is used as a local regulator it is possible to put a part of the board in standby, decreasing total power consumption. Ideal for automotive applications, LM2931 is protected from reverse battery installations or 2 battery jumps. During the transient, such as a 60 V load dump, when the input voltage can exceed the specified maximum operating input voltage of 26 V, the regulator automatically shuts down to protect both internal circuitry and the load. DS1760 - Rev 23 - February 2018 For further information contact your local STMicroelectronics sales office. www.st.com LM2931 Diagram 1 Diagram Figure 2. Schematic diagram AMG110720161100MT DS1760 - Rev 23 page 2/26 LM2931 Pin configuration 2 Pin configuration Figure 3. Pin connections (top view) GND DPAK S O-8 P IN 1 = VOUT P IN 2 = GND P IN 3 = VIN TO-92 BOTTOM VIEW AMG110720161101MT Note: DS1760 - Rev 23 (*) ADJ pin on the adjustable version, not connected in the fixed output version. page 3/26 LM2931 Maximum ratings 3 Maximum ratings Table 1. Absolute maximum ratings Symbol Parameter Value Unit VI DC positive input voltage 40 V VI DC reverse input voltage -15 V VI Transient input voltage (Ƭ < 100 ms) 60 V VI Transient reverse input voltage (Ƭ < 100 ms) -50 V Inhibit input voltage 40 V VINH IO Output current Internally limited TSTG Storage temperature range -65 to 150 °C TOP Operating junction temperature range -40 to 125 °C Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Table 2. Thermal data Symbol Parameter RthJC Thermal resistance junction-case RthJA Thermal resistance junction-ambient SO-8 DPAK TO-92 Unit 20 8 57 °C/W 55 (1) 100 200 °C/W 1. Considering 6 cm2 of copper board heat-sink. DS1760 - Rev 23 page 4/26 LM2931 Application circuits 4 Application circuits Figure 4. Application circuit for fixed output AMG110720161102MT Figure 5. Application circuit for adjustable output Note: R1 suggested value = 27 kΩ VO = VREF (R1 + R2)/R1 Inhibit pin: regulator is enabled when VINH < 1.2 V , disabled when VINH > 3.25 V DS1760 - Rev 23 page 5/26 LM2931 Electrical characteristics 5 Electrical characteristics Refer to the application circuit Figure 4. Application circuit for fixed output, TJ = 25 °C, CI = 0.1 µF, CO = 100 µF, VI = 14 V, IO = 10 mA, VINH = 0 V, unless otherwise specified. Table 3. Electrical characteristics of LM2931A33/LM2931A33Y Symbol Parameter Test conditions VI Maximum operating input voltage VO Output voltage VO Output voltage IO = 100 mA, VI = 6 to 26 V TJ = -40 to 125°C DVO Line regulation DVO Vd Id Load regulation Dropout voltage(1) Quiescent current IO = 10 mA, TJ = -40 to 125 °C Min. Typ. Max. 26 Unit V 3.175 3.3 3.425 V 3.135 3.3 3.465 V VI = 9 to 16 V 2 10 mV VI = 6 to 26 V 4 33 IO = 5 to 100 mA 10 33 mV IO = 10 mA 90 250 mV IO = 100 mA 250 600 IO = 100 mA 2.5 30 mA VINH = 2.5 V, RLOAD = 330 Ω 0.3 1 mA ON MODE OFF MODE ISC Short circuit current 100 300 mA 55 78 dB SVR Supply voltage rejection IO = 100 mA, VI = 14 ± 2 V f = 120 Hz VIL Control input voltage low TJ = -40 to 125 °C VIH Control input voltage high TJ = -40 to 125 °C IINH Inhibit input current VINH = 2.5 V VI Transient input voltage RLOAD = 330 Ω, Ƭ < 100 ms 60 70 V VI Reverse polarity input voltage VO = ± 0.3 V, RLOAD = 330 Ω -15 -50 V VI Reverse polarity input voltage transient RLOAD = 330 Ω, Ƭ < 100 ms -50 eN Output noise voltage B = 10 Hz to 100 kHz 2 3.25 1.2 2 22 V V 50 µA V 330 µVRMS 1. Vd measured when the output voltage has dropped 100 mV from the nominal value obtained at 14 V. Refer to the application circuit Figure 4. Application circuit for fixed output, TJ = 25 °C, CI = 0.1 µF, CO = 100 µF, VI = 14 V, IO = 10 mA, VINH = 0 V, unless otherwise specified. Table 4. Electrical characteristics of LM2931A50/ LM2931A50Y Symbol Parameter Test conditions VI Maximum operating input voltage VO Output voltage VO Output voltage IO = 100 mA, VI = 6 to 26 V TJ = -40 to 125 °C DVO Line regulation DVO Vd IO = 10 mA, TJ = -40 to 125 °C Min. Typ. Max. 26 Unit V 4.81 5 5.19 V 4.75 5 5.25 V VI = 9 to 16 V 2 10 mV VI = 6 to 26 V 4 30 Load regulation IO = 5 to 100 mA 15 50 mV Dropout voltage(1) IO = 10 mA 90 200 mV IO = 100 mA 250 600 DS1760 - Rev 23 page 6/26 LM2931 Electrical characteristics Symbol Id ISC Parameter Test conditions Min. Typ. Max. Unit Quiescent current ON MODE IO = 100 mA 2.5 30 mA OFF MODE VINH = 2.5 V, RLOAD = 500 Ω 0.3 1 mA Short circuit current 100 300 mA 55 75 dB SVR Supply voltage rejection IO = 100 mA, VI = 14 ± 2 V f = 120 Hz VIL Control input voltage low TJ = -40 to 125 °C VIH Control input voltage high TJ = -40 to 125 °C IINH Inhibit input current VINH = 2.5 V VI Transient input voltage RLOAD = 500 Ω, Ƭ < 100 ms 60 70 V VI Reverse polarity input voltage VO = ± 0.3 V, RLOAD = 500 Ω -15 -50 V VI Reverse polarity input voltage transient RLOAD = 500 Ω, Ƭ < 100 ms -50 eN Output noise voltage B = 10 Hz to 100 kHz 2 3.25 1.2 2 22 V V 50 µA V 500 µVRMS 1. Vd measured when the output voltage has dropped 100 mV from the nominal value obtained at 14 V. Refer to the application circuit Figure 5. Application circuit for adjustable output with R1 = 27 KΩand R2 = 40.5 kΩ, TJ = 25 °C, CI = 0.1 µF, CO = 100 µF, VI = 14 V, IO = 10 mA, VINH = 0 V, unless otherwise specified. Table 5. Electrical characteristics of LM2931 (adjustable version) Symbol VI Parameter Maximum operating input voltage Test conditions IO = 10 mA, TJ = -40 to 125 °C VREF Reference voltage (1) VREF Reference voltage (1) IO = 100 mA, TJ = -40 to 125 °C DVO Line regulation DVO Vd Id Min. Typ. Max. 26 Unit V 1.14 1.2 1.26 V 1.08 1.2 1.32 V VI = 3.6 to 26 V 0.6 4.5 mV Load regulation IO = 5 to 100 mA 9 30 mV Dropout voltage(2) IO = 10 mA 90 200 mV IO = 100 mA 250 600 IO = 100 mA 2.5 30 mA VINH = 2.5 V, RLOAD = 300 Ω 0.3 1 mA Quiescent current ON MODE OFF MODE ISC Short circuit current 100 300 mA 55 80 dB SVR Supply voltage rejection IO = 100 mA, VI = 14 ± 2 V f = 120 Hz VIL Control input voltage low TJ = -40 to 125 °C VIH Control input voltage high TJ = -40 to 125 °C IINH Inhibit input current VINH = 2.5 V VI Transient input voltage RLOAD = 300 Ω, Ƭ < 100 ms 60 70 V VI Reverse polarity input voltage VO = ± 0.3 V, RLOAD = 300 Ω -15 -50 V VI Reverse polarity input voltage transient RLOAD = 300 Ω, Ƭ < 100 ms -50 eN Output noise voltage B = 10 Hz to 100 kHz 2 3.25 1.2 2 22 V V 50 µA V 330 µVRMS 1. Reference voltage is measured from VOUT to ADJ pin. 2. Vd measured when the output voltage has dropped 100 mV from the nominal value obtained at 14 V. DS1760 - Rev 23 page 7/26 LM2931 Typical characteristics 6 Typical characteristics Unless otherwise specified CI = 0.1 µF, CO = 100 µF. Figure 6. Output voltage vs temperature AMG110720161200MT Figure 8. Reference voltage vs temperature AMG110720161202MT DS1760 - Rev 23 Figure 7. Output voltage vs temperature AMG110720161201MT Figure 9. Line regulation vs temperature AMG110720161203MT page 8/26 LM2931 Typical characteristics Figure 10. Load regulation vs temperature AMG110720161204MT Figure 12. Dropout voltage vs temperature AMG110720161206MT DS1760 - Rev 23 Figure 11. Dropout voltage vs temperature AMG110720161205MT Figure 13. Dropout voltage vs output current AMG110720161207MT page 9/26 LM2931 Typical characteristics Figure 14. Output voltage vs input voltage AMG110720161208MT Figure 16. Quiescent current vs temperature AMG110720161210MT DS1760 - Rev 23 Figure 15. Short circuit current vs drop voltage AMG110720161209MT Figure 17. Quiescent current vs input voltage AMG110720161211MT page 10/26 LM2931 Typical characteristics Figure 18. Quiescent current vs output current Figure 19. Supply voltage rejection vs temperature AMG110720161212MT Figure 20. Supply voltage rejection vs frequency AMG110720161213MT Figure 21. Supply voltage rejection vs output current AMG110720161214MT Figure 22. Stability vs CO AMG110720161215MT Figure 23. Line transient S tability zo ne 10000 VIN = 7 to 16V IO = 0 to 100mA C IN = 0.1µF Rs e rie s / mOhm 1000 s table 100 no t s table 10 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 Co ut [µF] AMG150320171500MT DS1760 - Rev 23 page 11/26 LM2931 Typical characteristics Figure 24. Load transient DS1760 - Rev 23 page 12/26 LM2931 Package information 7 Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. DS1760 - Rev 23 page 13/26 LM2931 DPAK package information 7.1 DPAK package information Figure 25. DPAK package outline 0068772_A_21 Table 6. DPAK mechanical data Dim. mm Min. DS1760 - Rev 23 Typ. Max. A 2.20 2.40 A1 0.90 1.10 A2 0.03 0.23 b 0.64 0.90 b4 5.20 5.40 c 0.45 0.60 c2 0.48 0.60 D 6.00 6.20 page 14/26 LM2931 DPAK package information Dim. mm Min. D1 E Typ. Max. 5.10 6.40 6.60 E1 4.70 e 2.28 e1 4.40 4.60 H 9.35 10.10 L 1.00 1.50 (L1) 2.80 L2 0.80 L4 0.60 R V2 1.00 0.20 0° 8° Figure 26. DPAK recommended footprint (dimensions are in mm) FP_0068772_24 DS1760 - Rev 23 page 15/26 LM2931 DPAK packing information 7.2 DPAK packing information Figure 27. DPAK tape outline DS1760 - Rev 23 page 16/26 LM2931 SO8 package information Figure 28. DPAK reel outline T REEL DIMENSIONS 40 mm min. Access hole At slot location B D C N A Full radius 7.3 Tape slot in core for tape start 25 mm min. width G measured at hub SO8 package information Figure 29. SO-8 package outline 0016023_I DS1760 - Rev 23 page 17/26 LM2931 SO8 package information Table 7. SO-8 mechanical data Dim. mm Min. Typ. Max. A 1.75 A1 0.10 A2 1.25 b 0.28 0.48 c 0.17 0.23 D 4.80 4.90 5.00 E 5.80 6.00 6.20 E1 3.80 3.90 4.00 e 0.25 1.27 h 0.25 0.50 L 0.40 1.27 L1 k 1.04 0° 8° ccc 0.10 Figure 30. SO-8 recommended footprint 0016023_I DS1760 - Rev 23 page 18/26 LM2931 SO-8 packing information 7.4 SO-8 packing information Figure 31. SO-8 tape and reel outline Table 8. SO-8 mechanical data Dim. mm Min. Typ. A 330 C 12.8 D 20.2 N 50 13.2 T DS1760 - Rev 23 Max. 22.4 Ao 6.4 6.5 Bo 5.2 5.4 Ko 2.1 2.3 Po 3.9 4.1 P 7.9 8.1 W 11.7 12.0 6.6 12.3 page 19/26 LM2931 TO-92 package information 7.5 TO-92 package information Figure 32. TO-92 package outline 0102782_E Table 9. TO-92 mechanical data Dim. mm Min. Max. A 4.32 4.95 b 0.36 0.51 D 4.45 4.95 E 3.30 3.94 e 2.41 2.67 e1 1.14 1.40 L 12.70 15.49 R 2.16 2.41 S1 0.92 1.52 W 0.41 0.56 V DS1760 - Rev 23 Typ. 5° page 20/26 LM2931 Ordering informations 8 Ordering informations Table 10. Order code DPAK AG LM2931ADT33RY TO-92 (bag) SO-8 Output voltages LM2931AD33R 3.3 V LM2931AD50R 5.0 V LM2931D-R 2.5 to 26 V Standard (1) LM2931ADT50RY(1) LM2931ADT50R LM2931AZ50R 1. Qualified and characterized according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 and Q002 or equivalent . DS1760 - Rev 23 page 21/26 LM2931 Revision history Table 11. Document revision history Date Revision Changes 21-Jun-2004 12 Document updated. 16-Jun-2006 13 Order codes updated. 27-Jul-2007 14 Added Table 1 in cover page. 21-Aug-2007 15 Added root part number - (see Table 1). 22-Nov-2007 16 Modified: Table 1. 11-Feb-2008 17 Modified: Table 1 on page 1. 10-Jul-2008 18 Removed package TO-220, modified Table 1 on page 1. 26-May-2010 19 Modified: VI values Table 4 on page 6, Table 5 on page 7 and Table 6 on page 8. 02-Nov-2011 20 Modified: Figure 4 on page 6. Added: (*) ADJ pin on the Adjustable version, Not Connected in the fixed output version. on page 4 and Inhibit pin: regulator is enabled when VINH < 1.2 V , disabled when VINH > 3.25 V on page 6. 09-Apr-2014 21 Part numbers LM2931XX, LM2931AXX33 and LM2931AXX50 changed to LM2931. Updated the description in cover page Section 2: Pin configuration and Section 7: Package information. Added Section 8: Revision history. Minor text changes. 16-Mar-2017 22 Updated features in cover page, removed Table 1. Device summary from cover page, Table 3: "Electrical characteristics of LM2931A33/LM2931A33Y" , Table 4: "Electrical characteristics of LM2931A50/ LM2931A50Y" and Table 5: "Electrical characteristics of LM2931 (adjustable version)". Updated Section 7: "Package information". Added Section 8: "Ordering information". Minor text changes. 23-Feb-2018 DS1760 - Rev 23 23 Updated Figure 5. Application circuit for adjustable output. page 22/26 LM2931 Contents Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 4 Application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 5 Electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 6 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 8 7.1 DPAK package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7.2 DPAK packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7.3 SO8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 7.4 SO-8 packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 7.5 TO-92 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Ordering informations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 List of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 List of figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 DS1760 - Rev 23 page 23/26 LM2931 List of tables List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electrical characteristics of LM2931A33/LM2931A33Y . . Electrical characteristics of LM2931A50/ LM2931A50Y . . Electrical characteristics of LM2931 (adjustable version) . DPAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . SO-8 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . SO-8 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . TO-92 mechanical data. . . . . . . . . . . . . . . . . . . . . . . . Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Document revision history . . . . . . . . . . . . . . . . . . . . . . DS1760 - Rev 23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 . 4 . 6 . 6 . 7 14 18 19 20 21 22 page 24/26 LM2931 List of figures List of figures Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Figure 30. Figure 31. Figure 32. DS1760 - Rev 23 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . Pin connections (top view) . . . . . . . . . . . . . . . . . . . . Application circuit for fixed output . . . . . . . . . . . . . . . Application circuit for adjustable output . . . . . . . . . . . Output voltage vs temperature . . . . . . . . . . . . . . . . . Output voltage vs temperature . . . . . . . . . . . . . . . . . Reference voltage vs temperature. . . . . . . . . . . . . . . Line regulation vs temperature . . . . . . . . . . . . . . . . . Load regulation vs temperature. . . . . . . . . . . . . . . . . Dropout voltage vs temperature . . . . . . . . . . . . . . . . Dropout voltage vs temperature . . . . . . . . . . . . . . . . Dropout voltage vs output current . . . . . . . . . . . . . . . Output voltage vs input voltage . . . . . . . . . . . . . . . . . Short circuit current vs drop voltage. . . . . . . . . . . . . . Quiescent current vs temperature . . . . . . . . . . . . . . . Quiescent current vs input voltage . . . . . . . . . . . . . . Quiescent current vs output current . . . . . . . . . . . . . . Supply voltage rejection vs temperature. . . . . . . . . . . Supply voltage rejection vs frequency . . . . . . . . . . . . Supply voltage rejection vs output current . . . . . . . . . Stability vs CO . . . . . . . . . . . . . . . . . . . . . . . . . . . . Line transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Load transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . DPAK package outline . . . . . . . . . . . . . . . . . . . . . . . DPAK recommended footprint (dimensions are in mm). DPAK tape outline. . . . . . . . . . . . . . . . . . . . . . . . . . DPAK reel outline . . . . . . . . . . . . . . . . . . . . . . . . . . SO-8 package outline . . . . . . . . . . . . . . . . . . . . . . . SO-8 recommended footprint . . . . . . . . . . . . . . . . . . SO-8 tape and reel outline . . . . . . . . . . . . . . . . . . . . TO-92 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 . 3 . 5 . 5 . 8 . 8 . 8 . 8 . 9 . 9 . 9 . 9 10 10 10 10 11 11 11 11 11 11 12 14 15 16 17 17 18 19 20 page 25/26 LM2931 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2018 STMicroelectronics – All rights reserved DS1760 - Rev 23 page 26/26