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| LM2931 SERIES VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT FUNCTION s s s s s s s s s VERY LOW DROPOUT VOLTAGE (0.15V TYP. AT 10mA LOAD) LOW QUIESCENT CURRENT (TYP. 2.5mA, AT 100mA LOAD) OUTPUT CURRENT UP TO 100mA ADJUSTABLE (FROM VOUT = 2.5V ONLY SO-8) AND FIXED (3.3V & 5V) OUTPUT VOLTAGE VERSION INTERNAL CURRENT AND THERMAL LIMIT LOAD DUMP PROTECTION UP TO 60V REVERSE TRANSIENT PROTECTION UP TO -50V TEMPERATURE RANGE: -40 TO 125C PACKAGE AVAILABLE: TO-92, DPAK, TO-220, SO-8 (WITH INHIBIT CONTROL) TO-220 TO-92 DESCRIPTION The LM2931 series 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 to the older L78L00 family, a shut down Logic Control function is available. This means that when the device is used as a local regulator is possible to put a part of the board SCHEMATIC DIAGRAM DPAK SO-8 in stand-by decreasing the total power consumption. Ideal for automotive application the LM2931 is protected from reverse battery installations or 2 battery jumps. During the transient, such as a a load dump (60V) when the input voltage can exceed the specified maximum operating input voltage (26V), the regulator will automatically shut down to protect both internal circuit and the load. March 2004 1/19 LM2931 SERIES ABSOLUTE MAXIMUM RATINGS Symbol VI VI VI VI VINH IO Tstg Top DC Positive Input Voltage DC Reverse Input Voltage Transient Input Voltage ( < 100ms) Transient Reverse Input Voltage ( < 100ms) Inhibit Input Voltage Output Current Storage Temperature Range Operating Junction Temperature Range Parameter Value 40 -15 60 -50 40 Internally Limited -65 to 150 -40 to 125 C C Unit V V V V V Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. THERMAL DATA Symbol Rthj-case Rthj-amb Parameter Thermal Resistance Junction-case Thermal Resistance Junction-ambient 2 TO-220 3 50 SO-8 20 55(*) DPAK 8 100 TO-92 Unit C/W 200 C/W (*) Considering 6 cm of copper board heat-sink CONNECTION DIAGRAM (top view) TO-220 (*) = N.C. for FIXED and ADJ for ADJUSTABLE SO-8 PIN 1 = VOUT PIN 2 = GND PIN 3 = VIN BOTTOM VIEW TO-92 DPAK ORDERING CODES TO-220 LM2931AV33 LM2931BV33 LM2931AV50 LM2931BV50 DPAK (*) LM2931ADT33 LM2931BDT33 LM2931ADT50 LM2931BDT50 TO-92 (*) LM2931AZ33 LM2931BZ33 LM2931AZ50 LM2931BZ50 SO-8 (*) LM2931AD33 LM2931BD33 LM2931AD50 LM2931BD50 LM2931D OUTPUT VOLTAGE 3.3 V 3.3 V 5.0 V 5.0 V 2.5 to 26 V (*) Available in Tape & Reel with the suffix "R" for fixed version and "-R" for adjustable version. 2/19 LM2931 SERIES APPLICATION CIRCUIT FOR FIXED OUTPUT APPLICATION CIRCUIT FOR ADJUSTABLE OUTPUT R1 suggested Value = 27K VO = VREF (R1 + R2)/R1. 3/19 LM2931 SERIES ELECTRICAL CHARACTERISTICS OF LM2931A 3.3V (refer to the test circuits, TJ = 25C, CI = 0.1 F, C O = 100 F, VI = 14V, IO = 10mA, VINH = 0V, unless otherwise specified). Symbol VI VO VO VO VO Vd Id Parameter Maximum Operating Input Voltage Output Voltage Output Voltage Line Regulation Load Regulation IO = 10 mA Test Conditions TJ = -40 to 125C Min. 26 3.135 IO = 100 mA VI = 6 to 26 V TJ = -40 to 125C VI = 9 to 16 V VI = 6 to 26 V IO = 5 to 100 mA Dropout Voltage (Note 1, 2) IO = 10 mA IO = 100 mA Quiescent Current ON MODE OFF MODE 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 IO = 100 mA, f = 120 Hz, TJ = -40 to 125C TJ = -40 to 125C VINH = 2.5 V RLOAD = 330 VO = 0.3 V RLOAD = 330 < 100ms RLOAD = 330 < 100ms 60 -15 -50 330 3.25 VI = 14 2 V TJ = -40 to 125C IO = 100 mA VINH = 2.5 V RLOAD = 330 100 55 3.135 Typ. 37 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 33 33 250 600 30 1 mA mA mA dB V V A V V V VRMS mV mV Max. Unit V V V mV ISC SVR VIL VIH IINH VI VI VI eN B =10 Hz to 100 KHz Note 1: Reference Voltage is measured from VOUT to ADJ pin. Note 2: Vd measured when the output voltage has dropped 100mV from the nominal value obtained at 14V. 4/19 LM2931 SERIES ELECTRICAL CHARACTERISTICS OF LM2931B 3.3V (refer to the test circuits, TJ = 25C, CI = 0.1 F, C O = 100 F, VI = 14V, IO = 10mA, VINH = 0V, unless otherwise specified). Symbol VI VO VO VO VO Vd Id Parameter Maximum Operating Input Voltage Output Voltage Output Voltage Line Regulation Load Regulation IO = 10 mA Test Conditions TJ = -40 to 125C Min. 26 3.135 IO = 100 mA VI = 6 to 26 V TJ = -40 to 125C VI = 9 to 16 V VI = 6 to 26 V IO = 5 to 100 mA Dropout Voltage (Note 1, 2) IO = 10 mA IO = 100 mA Quiescent Current ON MODE OFF MODE 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 IO = 100 mA, f = 120 Hz, TJ = -40 to 125C TJ = -40 to 125C VINH = 2.5 V RLOAD = 330 VO = 0.3 V RLOAD = 330 < 100ms RLOAD = 330 < 100ms 60 -15 -50 330 3.25 VI = 14 2 V TJ = -40 to 125C IO = 100 mA VINH = 2.5 V RLOAD = 330 100 55 2.97 Typ. 37 3.3 3.3 2 4 10 90 250 2.5 0.3 300 78 2 2 22 70 -50 50 1.2 3.465 3.63 10 33 33 200 600 30 1 mA mA mA dB V V A V V V VRMS mV mV Max. Unit V V V mV ISC SVR VIL VIH IINH VI VI VI eN B =10 Hz to 100 KHz Note 1: Reference Voltage is measured from VOUT to ADJ pin. Note 2: Vd measured when the output voltage has dropped 100mV from the nominal value obtained at 14V. 5/19 LM2931 SERIES ELECTRICAL CHARACTERISTICS OF LM2931A 5V (refer to the test circuits, TJ = 25C, CI = 0.1 F, C O = 100 F, VI = 14V, IO = 10mA, VINH = 0V, unless otherwise specified). Symbol VI VO VO VO VO Vd Id Parameter Maximum Operating Input Voltage Output Voltage Output Voltage Line Regulation Load Regulation IO = 10 mA Test Conditions TJ = -40 to 125C Min. 26 4.81 IO = 100 mA VI = 6 to 26 V TJ = -40 to 125C VI = 9 to 16 V VI = 6 to 26 V IO = 5 to 100 mA Dropout Voltage (Note 1, 2) IO = 10 mA IO = 100 mA Quiescent Current ON MODE OFF MODE 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 IO = 100 mA, f = 120 Hz, TJ = -40 to 125C TJ = -40 to 125C VINH = 2.5 V RLOAD = 500 VO = 0.3 V RLOAD = 500 < 100ms RLOAD = 500 < 100ms 60 -15 -50 500 3.25 VI = 14 2 V TJ = -40 to 125C IO = 100 mA VINH = 2.5 V RLOAD = 500 100 55 4.75 Typ. 37 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 30 50 200 600 30 1 mA mA mA dB V V A V V V VRMS mV mV Max. Unit V V V mV ISC SVR VIL VIH IINH VI VI VI eN B =10 Hz to 100 KHz Note 1: Reference Voltage is measured from VOUT to ADJ pin. Note 2: Vd measured when the output voltage has dropped 100mV from the nominal value obtained at 14V. 6/19 LM2931 SERIES ELECTRICAL CHARACTERISTICS OF LM2931B 5V (refer to the test circuits, TJ = 25C, CI = 0.1 F, C O = 100 F, VI = 14V, IO = 10mA, VINH = 0V, unless otherwise specified). Symbol VI VO VO VO VO Vd Id Parameter Maximum Operating Input Voltage Output Voltage Output Voltage Line Regulation Load Regulation IO = 10 mA Test Conditions TJ = -40 to 125C Min. 26 4.75 IO = 100 mA VI = 6 to 26 V TJ = -40 to 125C VI = 9 to 16 V VI = 6 to 26 V IO = 5 to 100 mA Dropout Voltage (Note 1, 2) IO = 10 mA IO = 100 mA Quiescent Current ON MODE OFF MODE 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 IO = 100 mA, f = 120 Hz, TJ = -40 to 125C TJ = -40 to 125C VINH = 2.5 V RLOAD = 500 VO = 0.3 V RLOAD = 500 < 100ms RLOAD = 500 < 100ms 60 -15 -50 500 3.25 VI = 14 2 V TJ = -40 to 125C IO = 100 mA VINH = 2.5 V RLOAD = 500 100 55 4.5 Typ. 37 5 5 2 4 15 90 250 2.5 0.3 300 75 2 2 22 70 -50 50 1.2 5.25 5.5 10 30 50 200 600 30 1 mA mA mA dB V V A V V V VRMS mV mV Max. Unit V V V mV ISC SVR VIL VIH IINH VI VI VI eN B =10 Hz to 100 KHz Note 1: Reference Voltage is measured from VOUT to ADJ pin. Note 2: Vd measured when the output voltage has dropped 100mV from the nominal value obtained at 14V. 7/19 LM2931 SERIES ELECTRICAL CHARACTERISTICS OF LM2931ADJ (refer to the test circuits figure 2 with R1 = 27K and R2 = 40.5K, TJ = 25C, CI = 0.1 F, CO = 100 F, VI = 14V, IO = 10mA, VINH = 0V, unless otherwise specified). Symbol VI VREF VREF VO VO Vd Id Parameter Maximum Operating Input IO = 10 mA Voltage Reference Voltage (Note 1) Reference Voltage (Note 1) IO = 100 mA Line Regulation Load Regulation VI = 3.6 to 26 V IO = 5 to 100 mA IO = 100 mA Quiescent Current ON MODE OFF MODE 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 IO = 100 mA f = 120 Hz TJ = -40 to 125C TJ = -40 to 125C VINH = 2.5 V RLOAD = 300 VO = 0.3 V RLOAD = 300 < 100ms RLOAD = 300 < 100ms 60 -15 -50 330 3.25 VI = 14 2 V TJ = -40 to 125C IO = 100 mA VINH = 2.5 V RLOAD = 300 100 55 Test Conditions TJ = -40 to 125C Min. 26 1.14 TJ = -40 to 125C 1.08 Typ. 37 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 30 200 600 30 1 mA mA mA dB V V A V V V VRMS Max. Unit V V V mV mV mV Dropout Voltage (Note 1, 2) IO = 10 mA ISC SVR VIL VIH IINH VI VI VI eN B =10 Hz to 100 KHz Note 1: Reference Voltage is measured from VOUT to ADJ pin. Note 2: Vd measured when the output voltage has dropped 100mV from the nominal value obtained at 14V. 8/19 LM2931 SERIES TYPICAL CHARACTERISTICS (unless otherwise specified CI = 0.1 F, CO = 100 F). Figure 1 : Output Voltage vs Temperature Figure 4 : Line Regulation vs Temperature Figure 2 : Output Voltage vs Temperature Figure 5 : Load Regulation vs Temperature Figure 3 : Reference Voltage vs Temperature Figure 6 : Dropout Voltage vs Temperature 9/19 LM2931 SERIES Figure 7 : Dropout Voltage vs Temperature Figure 10 : Short Circuit Current vs Drop Voltage Figure 8 : Dropout Voltage vs Output Current Figure 11 : Quiescent Current vs Temperature Figure 9 : Output Voltage vs Input Voltage Figure 12 : Quiescent Current vs Input Voltage 10/19 LM2931 SERIES Figure 13 : Quiescent Current vs Output Current Figure 16 : Supply Voltage Rejection vs Output Current Figure 14 : Supply Voltage Rejection vs Temperature Figure 17 : Stability vs CO Figure 15 : Supply Voltage Rejection vs Frequency Figure 18 : Line Transient VI = 6 to 20 V, RL = 500, T J = 25C, C I = 0, CO = 100F, Rise Fall-Time = 200 ns 11/19 LM2931 SERIES Figure 19 : Load Transient VI = 14 V, IO = 100mA, T J = 25C, CI = 0.1F, CO = 100F, Rise Time = 500ns, Fall-Time = 1s 12/19 LM2931 SERIES TO-220 MECHANICAL DATA DIM. A C D D1 E F F1 F2 G G1 H2 L2 L4 L5 L6 L7 L9 DIA. 13.0 2.65 15.25 6.2 3.5 3.75 0.49 0.61 1.14 1.14 4.95 2.4 10.0 16.4 14.0 2.95 15.75 6.6 3.93 3.85 0.511 0.104 0.600 0.244 0.137 0.147 mm. MIN. 4.40 1.23 2.40 1.27 0.70 0.88 1.70 1.70 5.15 2.7 10.40 0.019 0.024 0.044 0.044 0.194 0.094 0.393 0.645 0.551 0.116 0.620 0.260 0.154 0.151 TYP MAX. 4.60 1.32 2.72 MIN. 0.173 0.048 0.094 0.050 0.027 0.034 0.067 0.067 0.203 0.106 0.409 inch TYP. MAX. 0.181 0.051 0.107 P011C 13/19 LM2931 SERIES TO-92 MECHANICA DATA mm. DIM. MIN. A b D E e e1 L R S1 W 4.32 0.36 4.45 3.30 2.41 1.14 12.7 2.16 0.92 0.41 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 TYP. MAX. 194.9 20.1 194.9 155.1 105.1 55.1 609.8 94.9 59.8 22.0 mils 0102782/C 14/19 LM2931 SERIES 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 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 8 (max.) 0.04 0016023/C 15/19 LM2931 SERIES DPAK MECHANICAL DATA mm. DIM. MIN. A A1 A2 B B2 C C2 D D1 E E1 e e1 H L (L1) L2 L4 0.6 4.4 9.35 1 2.8 0.8 1 0.023 6.4 4.7 2.28 4.6 10.1 0.173 0.368 0.039 0.110 0.031 0.039 2.2 0.9 0.03 0.64 5.2 0.45 0.48 6 5.1 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 16/19 LM2931 SERIES 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 17/19 LM2931 SERIES 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 18/19 LM2931 SERIES Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics All other names are the property of their respective owners (c) 2004 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com 19/19 |
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