LM2936Q LM2936Q Ultra-Low Quiescent Current LDO Voltage Regulator Literature Number: SNVS684A LM2936Q Ultra-Low Quiescent Current LDO Voltage Regulator General Description Features The LM2936Q ultra-low quiescent current regulator features low dropout voltage and low current in the standby mode. With less than 15 A quiescent current at a 100 A load, the LM2936Q is ideally suited for automotive and other battery operated systems. The LM2936Q retains all of the features that are common to low dropout regulators including a low dropout PNP pass device, short circuit protection, reverse battery protection, and thermal shutdown. The LM2936Q has a 40V maximum operating voltage limit, a -40C to +125C operating temperature range, and 3% output voltage tolerance over the entire output current, input voltage, and temperature range. The LM2936Q is available in a SO-8 package. AEC-Q100 Grade 1 Qualified (-40C to 125C) Ultra low quiescent current (IQ 15 A for IO = 100 A) Fixed 3.0V, 3.3V or 5.0V with 50 mA output 2% Initial output tolerance 3% Output tolerance over line, load, and temperature Dropout voltage typically 200 mV @ IO = 50 mA Reverse battery protection -50V reverse transient protection Internal short circuit current limit Internal thermal shutdown protection 40V operating voltage limit Typical Application 30131901 * Required if regulator is located more than 2 from power supply filter capacitor. ** Required for stability. See Electrical Characteristics for required values. Must be rated over intended operating temperature range. Effective series resistance (ESR) is critical, see curve. Locate capacitor as close as possible to the regulator output and ground pins. Capacitance may be increased without bound. (c) 2011 National Semiconductor Corporation 301319 www.national.com LM2936Q Ultra-Low Quiescent Current LDO Voltage Regulator May 25, 2011 LM2936Q Connection Diagrams 8-Pin SO (M) 8-Pin Mini-SOIC (MM) 30131906 Top View LM2936QM and LM2936QMX See NS Package Number M08A 30131928 Top View LM2936QMM and LM2936QMMX See NS Package Number MUA08A Ordering Information Output Voltage High Voltage Shutdown Pin 3.00V - - - - - - - - LM2936QM-3.3 8-Lead SOIC - - LM2936QMX-3.3 8-Lead SOIC 3.30V 5.00V - - - - Package Drawing Transport Media LM2936QMM-3.0 8-Lead Mini-SOIC MUA08A Rail LM2936QMM-3.3 8-Lead Mini-SOIC MUA08A Rail LM2936QMMX-3.3 8-Lead Mini-SOIC MUA08A Tape/Reel M08A Rail M08A Tape/Reel Order Package Type LM2936QMM-5.0 8-Lead Mini-SOIC MUA08A Rail LM2936QMMX-5.0 8-Lead Mini-SOIC MUA08A Tape/Reel LM2936QM-5.0 8-Lead SOIC M08A Rail LM2936QMX-5.0 8-Lead SOIC M08A Tape/Reel * Automotive grade (Q) product incorporates enhanced manufacturing and support processes for teh automotive market, including defect detection methodologies. Reliability qualification is compliant with the requirements www.national.com Feature AEC-Q100 Grade 1 Qualified. Automotive Grade Production Flow. * and temperature grades defined in the AEC-Q100 standard. Automotive grade products are identified with the letter Q. For more information go to http:// www.national.com/automotive. 2 If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage (Survival) ESD Susceptibility (Note 2) Power Dissipation (Note 3) Junction Temperature (TJmax) Storage Temperature Range Lead Temperature (Soldering, 10 sec.) Operating Temperature Range Maximum Operating Input Voltage LM2936Q +60V, -50V 2000V Internally limited 150C -65C to +150C -40C to +125C +40V SO-8 (M08A) JA 140C/W SO-8 (M08A) JC 45C/W MSO-8 (MUA08A) JA 200C/W 260C Electrical Characteristics for LM2936Q-3.0 VIN = 14V, IO = 10 mA, TJ = 25C, unless otherwise specified. Boldface limits apply over entire operating temperature range Min (Note 5) Typical (Note 4) Max (Note 5) 2.940 3.000 3.060 2.910 3.000 3.090 V IO = 100 A, 8V VIN 24V 15 20 A IO = 10 mA, 8V VIN 24V 0.20 0.50 mA IO = 50 mA, 8V VIN 24V 1.5 2.5 mA 9V VIN 16V 5 10 mV 6V VIN 40V, IO = 1 mA 10 30 100 A IO 5 mA 10 30 5 mA IO 50 mA 10 30 0.05 0.10 0.20 0.40 V 120 250 mA Parameter Conditions Units All LM2936Q-3.0 Output Voltage 4.0V VIN 26V, 100 A IO 50 mA (Note 6) Quiescent Current Line Regulation Load Regulation Dropout Voltage IO = 100 A IO = 50 mA Short Circuit Current VO = 0V Output Impedance IO = 30 mAdc and 10 mArms, 65 450 mV V m f = 1000 Hz Output Noise Voltage 10 Hz-100 kHz Long Term Stability 500 V 20 mV/1000 Hr Ripple Rejection Vripple = 1Vrms, fripple = 120 Hz -40 -60 dB Reverse Polarity RL = 500, T = 1 ms -50 -80 V Transient Input Voltage Output Voltage with VIN = -15V, RL = 500 0.00 -0.30 V Reverse Polarity Input Maximum Line Transient RL = 500, VO 3.30V, T = 40ms Output Bypass Capacitance (COUT) ESR 0.1mA IOUT 50mA COUT = 22F 60 0.3 3 V 8 www.national.com LM2936Q Operating Ratings Absolute Maximum Ratings (Note 1) LM2936Q Electrical Characteristics for LM2936Q-3.3 VIN = 14V, IO = 10 mA, TJ = 25C, unless otherwise specified. Boldface limits apply over entire operating temperature range Min (Note 5) Typical (Note 4) Max (Note 5) 3.234 3.300 3.366 3.201 3.300 3.399 IO = 100 A, 8V VIN 24V 15 20 A IO = 10 mA, 8V VIN 24V 0.20 0.50 mA IO = 50 mA, 8V VIN 24V 1.5 2.5 mA 9V VIN 16V 5 10 mV 6V VIN 40V, IO = 1 mA 10 30 100 A IO 5 mA 10 30 5 mA IO 50 mA 10 30 IO = 100 A 0.05 0.10 V IO = 50 mA 0.20 0.40 V 120 250 mA Parameter Conditions Units All LM2936Q-3.3 Output Voltage 4.0V VIN 26V, V 100 A IO 50 mA (Note 6) Quiescent Current Line Regulation Load Regulation Dropout Voltage Short Circuit Current VO = 0V Output Impedance IO = 30 mAdc and 10 mArms, f Output Noise Voltage 65 450 mV m = 1000 Hz 10 Hz-100 kHz Long Term Stability 500 V 20 mV/1000 Hr Ripple Rejection Vripple = 1Vrms, fripple = 120 Hz -40 -60 dB Reverse Polarity RL = 500, T = 1 ms -50 -80 V Transient Input Voltage Output Voltage with VIN = -15V, RL = 500 0.00 -0.30 V Reverse Polarity Input Maximum Line Transient RL = 500, VO 3.63V, T = 40ms Output Bypass Capacitance (COUT) ESR COUT = 22F 60 V 0.3 0.1mA IOUT 50mA 8 Electrical Characteristics for LM2936Q-5.0 VIN = 14V, IO = 10 mA, TJ = 25C, unless otherwise specified. Boldface limits apply over entire operating temperature range Parameter Conditions Min (Note 5) Typical (Note 4) Max (Note 5) 4.90 5.00 5.10 4.85 5.00 5.15 Units All LM2936Q-5.0 Output Voltage 5.5V VIN 26V, 100 A IO 50 mA (Note 6) Quiescent Current Line Regulation Load Regulation www.national.com V IO = 100 A, 8V VIN 24V 9 15 A IO = 10 mA, 8V VIN 24V 0.20 0.50 mA IO = 50 mA, 8V VIN 24V 1.5 2.5 mA 9V VIN 16V 5 10 mV 6V VIN 40V, IO = 1 mA 10 30 100 A IO 5 mA 10 30 5 mA IO 50 mA 10 30 4 mV Dropout Voltage Max (Note 5) Units IO = 100 A 0.05 0.10 V IO = 50 mA 0.20 0.40 V 120 250 Short Circuit Current VO = 0V Output Impedance IO = 30 mAdc and 10 mArms, f Output Noise Voltage Min (Note 5) Conditions 65 mA 450 m 500 V = 1000 Hz 10 Hz-100 kHz Long Term Stability 20 mV/1000 Hr Ripple Rejection Vripple = 1Vrms, fripple = 120 Hz -40 -60 dB Reverse Polarity RL = 500, T = 1 ms -50 -80 V Transient Input Voltage Output Voltage with VIN = -15V, RL = 500 0.00 -0.30 V Reverse Polarity Input Maximum Line Transient RL = 500, VO 5.5V, T = 40ms Output Bypass Capacitance (COUT) ESR COUT = 10F 60 0.3 0.1mA IOUT 50mA V 8 Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating the device beyond its specified operating ratings. Note 2: Human body model, 100 pF discharge through a 1.5 k resistor. Note 3: The maximum power dissipation is a function of TJmax, JA, and TA. The maximum allowable power dissipation at any ambient temperature is PD = (TJmax - TA)/JA. If this dissipation is exceeded, the die temperature will rise above 150C and the LM2936Q will go into thermal shutdown. Note 4: Typicals are at 25C (unless otherwise specified) and represent the most likely parametric norm. Note 5: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis. Note 6: To ensure constant junction temperature, pulse testing is used. 5 www.national.com LM2936Q Typical (Note 4) Parameter LM2936Q Typical Performance Characteristics Dropout Voltage Dropout Voltage 30131908 30131909 Quiescent Current Quiescent Current 30131910 30131911 Quiescent Current Quiescent Current 30131912 www.national.com 30131913 6 LM2936Q Quiescent Current LM2936Q-3.0 COUT ESR 30131914 30131929 LM2936Q-5.0 COUT ESR LM2936Q-3.3 COUT ESR 30131915 30131930 Peak Output Current Peak Output Current 30131916 30131917 7 www.national.com LM2936Q LM2936Q-5.0 Current Limit LM2936Q-5.0 Line Transient Response 30131918 30131919 LM2936Q-5.0 Output at Voltage Extremes LM2936Q-5.0 Ripple Rejection 30131921 30131920 LM2936Q-5.0 Load Transient Response LM2936Q-5.0 Low Voltage Behavior 30131923 30131922 www.national.com 8 LM2936Q LM2936Q-5.0 Output Impedance 30131924 9 www.national.com LM2936Q rating JC; and the case to ambient thermal resistance rating CA. The relationship is defined as: JA = JC + CA. For the SO-8 the JA rating can be improved by using the copper mounting pads on the printed circuit board as a thermal conductive path to extract heat from the package. On the SO-8 package the four ground pins are thermally connected to the backside of the die. Adding approximately 0.04 square inches of 2 oz. copper pad area to these four pins will improve the JA rating to approximately 110C/W. If this extra pad are is placed directly beneath the package there should not be any impact on board density. While the LM2936Q has an internally set thermal shutdown point of typically 160C, this is intended as a safety feature only. Continuous operation near the thermal shutdown temperature should be avoided as it may have a negative affect on the life of the device. While the LM2936Q maintains regulation to 60V, it will not withstand a short circuit above 40V because of safe operating area limitations in the internal PNP pass device. Above 60V the LM2936Q will break down with catastrophic effects on the regulator and possibly the load as well. Do not use this device in a design where the input operating voltage may exceed 40V, or where transients are likely to exceed 60V. Applications Information Unlike other PNP low dropout regulators, the LM2936Q remains fully operational to 40V. Owing to power dissipation characteristics of the available packages, full output current cannot be guaranteed for all combinations of ambient temperature and input voltage. As an example, consider an LM2936QZ-5.0 operating at 25C ambient. Using the formula for maximum allowable power dissipation given in (Note 3) , we find that PDmax = 641 mW at 25C. Including the small contribution of the quiescent current to total power dissipation the maximum input voltage (while still delivering 50 mA output current) is 17.3V. The LM2936QZ-5.0 will go into thermal shutdown if it attempts to deliver full output current with an input voltage of more than 17.3V. Similarly, at 40V input and 25C ambient the LM2936QZ-5.0 can deliver 18 mA maximum. Under conditions of higher ambient temperatures, the voltage and current calculated in the previous examples will drop. For instance, at the maximum ambient of 125C the LM2936QZ- 5.0 can only dissipate 128 mW, limiting the input voltage to 7.34V for a 50 mA load, or 3.5 mA output current for a 40V input. The junction to ambient thermal resistance JA rating has two distinct components: the junction to case thermal resistance www.national.com 10 LM2936Q 30131905 Equivalent Schematic Diagram 11 www.national.com LM2936Q Physical Dimensions inches (millimeters) unless otherwise noted 8-Lead Small Outline Molded Package (M) NS Package Number M08A 8-Lead Mini SOIC Package (MM) NS Package Number MUA08A www.national.com 12 LM2936Q Notes 13 www.national.com LM2936Q Ultra-Low Quiescent Current LDO Voltage Regulator Notes For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Design Support Amplifiers www.national.com/amplifiers WEBENCH(R) Tools www.national.com/webench Audio www.national.com/audio App Notes www.national.com/appnotes Clock and Timing www.national.com/timing Reference Designs www.national.com/refdesigns Data Converters www.national.com/adc Samples www.national.com/samples Interface www.national.com/interface Eval Boards www.national.com/evalboards LVDS www.national.com/lvds Packaging www.national.com/packaging Power Management www.national.com/power Green Compliance www.national.com/quality/green Switching Regulators www.national.com/switchers Distributors www.national.com/contacts LDOs www.national.com/ldo Quality and Reliability www.national.com/quality LED Lighting www.national.com/led Feedback/Support www.national.com/feedback Voltage References www.national.com/vref Design Made Easy www.national.com/easy www.national.com/powerwise Applications & Markets www.national.com/solutions Mil/Aero www.national.com/milaero PowerWise(R) Solutions Serial Digital Interface (SDI) www.national.com/sdi Temperature Sensors www.national.com/tempsensors SolarMagicTM www.national.com/solarmagic PLL/VCO www.national.com/wireless www.national.com/training PowerWise(R) Design University THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION ("NATIONAL") PRODUCTS. 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