LM2931XX_10

LM2931XX, LM2931AXX33 LM2931AXX50 Very low drop voltage regulators with inhibit function Features ■ ■ ■ ■ ■ ■ ■ ■ ■ Very low dropout voltage (0.15 V 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) 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. SO-8 DPAK TO-92 Description The LM2931xx 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 batterypowered systems. In the 8-pin configuration (SO8), fully compatible with the older L78Lxx 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, LM2931xx is protected from reverse battery installations or 2 battery jumps. During the transient, such as a 60 V load dump, when the Table 1. Device summary Order codes Output voltages DPAK TO-92 (Bag) SO-8 LM2931AD33R LM2931ADT50R LM2931AZ50R LM2931AD50R LM2931D-R May 2010 Doc ID 6740 Rev 19 3.3 V 5.0 V 2.5 to 26 V 1/21 www.st.com 21 Contents LM2931XX, LM2931AXX33, LM2931AXX50 Contents 1 2 3 4 5 6 7 8 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 2/21 Doc ID 6740 Rev 19 LM2931XX, LM2931AXX33, LM2931AXX50 Diagram 1 Figure 1. Diagram Schematic diagram Doc ID 6740 Rev 19 3/21 Pin configuration LM2931XX, LM2931AXX33, LM2931AXX50 2 Figure 2. Pin configuration Pin connections (top view) DPAK SO-8 PIN 1 = VOUT PIN 2 = GND PIN 3 = VIN TO-92 BOTTOM VIEW 4/21 Doc ID 6740 Rev 19 LM2931XX, LM2931AXX33, LM2931AXX50 Maximum ratings 3 Table 2. Maximum ratings Absolute maximum ratings Parameter DC positive input voltage DC reverse input voltage Transient input voltage (τ < 100 ms) Transient reverse input voltage (τ < 100 ms) Inhibit input voltage Output current Storage temperature range Operating junction temperature range Value 40 -15 60 -50 40 Internally limited -65 to 150 -40 to 125 °C °C Unit V V V V V Symbol VI VI VI VI VINH IO TSTG TOP Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Thermal data Parameter Thermal resistance junction-case Thermal resistance junction-ambient SO-8 20 55 (1) Table 3. Symbol RthJC RthJA DPAK 8 100 TO-92 Unit °C/W 200 °C/W 1. Considering 6 cm2 of copper board heat-sink. Doc ID 6740 Rev 19 5/21 Application circuits LM2931XX, LM2931AXX33, LM2931AXX50 4 Figure 3. Application circuits Application circuit for fixed output Figure 4. Application circuit for adjustable output Note: R1 suggested value = 27 kΩ VO = VREF (R1 + R2)/R1 6/21 Doc ID 6740 Rev 19 LM2931XX, LM2931AXX33, LM2931AXX50 Electrical characteristics 5 Electrical characteristics Refer to the application circuit Figure 3, TJ = 25 °C, CI = 0.1 µF, CO = 100 µF, VI = 14 V, IO = 10 mA, VINH = 0 V, unless otherwise specified. Table 4. Symbol VI VO VO ΔVO ΔVO Vd Electrical characteristics of LM2931Axx33 Parameter Maximum operating input voltage Output voltage Output voltage IO = 100 mA, VI = 6 to 26 V TJ = -40 to 125°C VI = 9 to 16 V VI = 6 to 26 V Load regulation Dropout voltage (1) (2) Quiescent current ON MODE OFF MODE IO = 5 to 100 mA IO = 10 mA IO = 100 mA IO = 100 mA VINH = 2.5 V, RLOAD = 330 Ω 100 IO = 100 mA, VI = 14 ± 2 V f = 120 Hz, TJ = -40 to 125°C TJ = -40 to 125°C TJ = -40 to 125°C VINH = 2.5 V RLOAD = 330 Ω, τ < 100ms VO = ± 0.3 V, RLOAD = 330 Ω RLOAD = 330 Ω, τ < 100ms B =10 Hz to 100 kHz 60 -15 -50 330 3.25 55 Test conditions IO = 10 mA, TJ = -40 to 125°C Min. 26 3.135 3.135 3.3 3.3 2 4 10 90 250 2.5 0.3 300 78 2 2 22 70 -50 50 1.2 3.425 3.465 10 mV 33 33 250 mV 600 30 1 mA mA mA dB V V µA V V V µVRMS mV Typ. Max. Unit V V V Line regulation Id ISC SVR VIL VIH IINH VI VI VI eN Short circuit current Supply voltage rejection Control input voltage low Control input voltage high Inhibit input current Transient input voltage Reverse polarity input voltage Reverse polarity input voltage transient Output noise voltage 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. Doc ID 6740 Rev 19 7/21 Electrical characteristics LM2931XX, LM2931AXX33, LM2931AXX50 Refer to the application circuit Figure 3, TJ = 25 °C, CI = 0.1 µF, CO = 100 µF, VI = 14 V, IO = 10 mA, VINH = 0 V, unless otherwise specified. Table 5. Symbol VI VO VO ΔVO ΔVO Vd Electrical characteristics of LM2931Axx50 Parameter Maximum operating input voltage Output voltage Output voltage IO = 100 mA, VI = 6 to 26 V TJ = -40 to 125°C VI = 9 to 16 V VI = 6 to 26 V Load regulation Dropout voltage (1) (2) Quiescent current ON MODE OFF MODE IO = 5 to 100 mA IO = 10 mA IO = 100 mA IO = 100 mA VINH = 2.5 V, RLOAD = 500 Ω 100 IO = 100 mA, VI = 14 ± 2 V f = 120 Hz, TJ = -40 to 125°C TJ = -40 to 125°C TJ = -40 to 125°C VINH = 2.5 V RLOAD = 500 Ω, τ < 100ms VO = ± 0.3 V, RLOAD = 500 Ω RLOAD = 500 Ω, τ < 100ms B =10 Hz to 100 kHz 60 -15 -50 500 3.25 55 Test conditions IO = 10 mA, TJ = -40 to 125°C Min. 26 4.81 4.75 5 5 2 4 15 90 250 2.5 0.3 300 75 2 2 22 70 -50 50 1.2 5.19 5.25 10 mV 30 50 200 mV 600 30 1 mA mA mA dB V V µA V V V µVRMS mV Typ. Max. Unit V V V Line regulation Id ISC SVR VIL VIH IINH VI VI VI eN Short circuit current Supply voltage rejection Control input voltage low Control input voltage high Inhibit input current Transient input voltage Reverse polarity input voltage Reverse polarity input voltage transient Output noise voltage 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. 8/21 Doc ID 6740 Rev 19 LM2931XX, LM2931AXX33, LM2931AXX50 Electrical characteristics Refer to the application circuit Figure 4 with R1 = 27 KΩ and 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 6. Symbol VI VREF VREF ΔVO ΔVO Vd Electrical characteristics of LM2931xx Parameter Maximum operating input voltage Reference voltage (1) Reference voltage (1) Line regulation Load regulation Dropout voltage (1) (2) Quiescent current ON MODE OFF MODE IO = 100 mA, TJ = -40 to 125°C VI = 3.6 to 26 V IO = 5 to 100 mA IO = 10 mA IO = 100 mA IO = 100 mA VINH = 2.5 V, RLOAD = 300 Ω 100 IO = 100 mA, VI = 14 ± 2 V f = 120 Hz, TJ = -40 to 125°C TJ = -40 to 125°C TJ = -40 to 125°C VINH = 2.5 V RLOAD = 300 Ω, τ < 100ms VO = ± 0.3 V, RLOAD = 300 Ω RLOAD = 300 Ω, τ < 100ms B = 10 Hz to 100 kHz 60 -15 -50 330 3.25 55 Test conditions IO = 10 mA, TJ = -40 to 125°C Min. 26 1.14 1.08 1.2 1.2 0.6 9 90 250 2.5 0.3 300 80 2 2 22 70 -50 50 1.2 1.26 1.32 4.5 30 200 mV 600 30 1 mA mA mA dB V V µA V V V µVRMS Typ. Max. Unit V V V mV mV Id ISC SVR VIL VIH IINH VI VI VI eN Short circuit current Supply voltage rejection Control input voltage low Control input voltage high Inhibit input current Transient input voltage Reverse polarity input voltage Reverse polarity input voltage transient Output noise voltage 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. Doc ID 6740 Rev 19 9/21 Typical characteristics LM2931XX, LM2931AXX33, LM2931AXX50 6 Figure 5. Typical characteristics Unless otherwise specified CI = 0.1 µF, CO = 100 µF. Output voltage vs. temperature Figure 6. Output voltage vs. temperature Figure 7. Reference voltage vs. temperature Figure 8. Line regulation vs. temperature Figure 9. Load regulation vs. temperature Figure 10. Dropout voltage vs. temperature 10/21 Doc ID 6740 Rev 19 LM2931XX, LM2931AXX33, LM2931AXX50 Typical characteristics Figure 11. Dropout voltage vs. temperature Figure 12. Dropout voltage vs. output current Figure 13. Output voltage vs. input voltage Figure 14. Short circuit current vs. drop voltage Figure 15. Quiescent current vs. temperature Figure 16. Quiescent current vs. input voltage Doc ID 6740 Rev 19 11/21 Typical characteristics LM2931XX, LM2931AXX33, LM2931AXX50 Figure 17. Quiescent current vs. output current Figure 18. Supply voltage rejection vs. temperature Figure 19. Supply voltage rejection vs. frequency Figure 20. Supply voltage rejection vs. output current Figure 21. Stability vs. CO Figure 22. Line transient VI = 6 to 20 V, RL = 500 Ω, TJ = 25°C, CI = 0, CO = 100 µF, Rise Fall-Time = 200 ns 12/21 Doc ID 6740 Rev 19 LM2931XX, LM2931AXX33, LM2931AXX50 Typical characteristics Figure 23. Line transient VI = 14 V, IO = 100 mA, TJ = 25°C, CI = 0.1 µF, CO = 100 µF, Rise Time = 500 ns, Fall-Time = 1 µs Doc ID 6740 Rev 19 13/21 Package mechanical data LM2931XX, LM2931AXX33, LM2931AXX50 7 Package mechanical data 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. 14/21 Doc ID 6740 Rev 19 LM2931XX, LM2931AXX33, LM2931AXX50 Package mechanical data TO-92 mechanical data mm. Dim. Min. A b D E e e1 L R S1 W α 4.32 0.36 4.45 3.30 2.41 1.14 12.7 2.16 0.92 0.41 5° Typ. Max. 4.95 0.51 4.95 3.94 2.67 1.40 15.49 2.41 1.52 0.56 Min. 170.1 14.2 175.2 129.9 94.9 44.9 500.0 85.0 36.2 16.1 5° Typ. Max. 194.9 20.1 194.9 155.1 105.1 55.1 609.8 94.9 59.8 22.0 mils. 0102782/D Doc ID 6740 Rev 19 15/21 Package mechanical data LM2931XX, LM2931AXX33, LM2931AXX50 DPAK mechanical data mm. Dim. Min. A A1 A2 B b4 C C2 D D1 E E1 e e1 H L (L1) L2 L4 R V2 2.2 0.9 0.03 0.64 5.2 0.45 0.48 6 5.1 6.4 4.7 2.28 4.4 9.35 1 2.8 0.8 0.6 0.2 0° 8° 0° 1 0.023 0.008 8° 4.6 10.1 0.173 0.368 0.039 0.110 0.031 0.039 6.6 0.252 0.185 0.090 0.181 0.397 Typ. Max. 2.4 1.1 0.23 0.9 5.4 0.6 0.6 6.2 Min. 0.086 0.035 0.001 0.025 0.204 0.017 0.019 0.236 0.200 0.260 Typ. Max. 0.094 0.043 0.009 0.035 0.212 0.023 0.023 0.244 inch. 0068772-F 16/21 Doc ID 6740 Rev 19 LM2931XX, LM2931AXX33, LM2931AXX50 Package mechanical data SO-8 mechanical data Dim. A A1 A2 B C D E e H h L k ddd 0.1 5.80 0.25 0.40 mm. Min. 1.35 0.10 1.10 0.33 0.19 4.80 3.80 1.27 6.20 0.50 1.27 8° (max.) 0.04 0.228 0.010 0.016 Typ. Max. 1.75 0.25 1.65 0.51 0.25 5.00 4.00 Min. 0.053 0.04 0.043 0.013 0.007 0.189 0.150 0.050 0.244 0.020 0.050 inch. Typ. Max. 0.069 0.010 0.065 0.020 0.010 0.197 0.157 0016023/C Doc ID 6740 Rev 19 17/21 Package mechanical data LM2931XX, LM2931AXX33, LM2931AXX50 Tape & reel DPAK-PPAK mechanical data mm. Dim. Min. A C D N T Ao Bo Ko Po P 6.80 10.40 2.55 3.9 7.9 6.90 10.50 2.65 4.0 8.0 12.8 20.2 60 22.4 7.00 10.60 2.75 4.1 8.1 0.268 0.409 0.100 0.153 0.311 0.272 0.413 0.104 0.157 0.315 13.0 Typ. Max. 330 13.2 0.504 0.795 2.362 0.882 0.2.76 0.417 0.105 0.161 0.319 0.512 Min. Typ. Max. 12.992 0.519 inch. 18/21 Doc ID 6740 Rev 19 LM2931XX, LM2931AXX33, LM2931AXX50 Package mechanical data Tape & reel SO-8 mechanical data mm. Dim. Min. A C D N T Ao Bo Ko Po P 8.1 5.5 2.1 3.9 7.9 12.8 20.2 60 22.4 8.5 5.9 2.3 4.1 8.1 0.319 0.216 0.082 0.153 0.311 Typ. Max. 330 13.2 0.504 0.795 2.362 0.882 0.335 0.232 0.090 0.161 0.319 Min. Typ. Max. 12.992 0.519 inch. Doc ID 6740 Rev 19 19/21 Revision history LM2931XX, LM2931AXX33, LM2931AXX50 8 Table 7. Date Revision history Document revision history Revision 12 13 14 15 16 17 18 19 Document updated. Order codes updated. Added Table 1 in cover page. Added root part number - (see Table 1). Modified: Table 1. Modified: Table 1 on page 1. Removed package TO-220, modified Table 1 on page 1. Modified: VI values Table 4 on page 7, Table 5 on page 8 and Table 6 on page 9. Changes 21-Jun-2004 16-Jun-2006 27-Jul-2007 21-Aug-2007 22-Nov-2007 11-Feb-2008 10-Jul-2008 26-May-2010 20/21 Doc ID 6740 Rev 19 LM2931XX, LM2931AXX33, LM2931AXX50 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. 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