LM195QML LM195QML Ultra Reliable Power Transistors Literature Number: SNLS194 LM195QML Ultra Reliable Power Transistors General Description The LM195 is a fast, monolithic power integrated circuit with complete overload protection. This device, which acts as a high gain power transistor, has included on the chip, current limiting, power limiting, and thermal overload protection making it virtually impossible to destroy from any type of overload. The inclusion of thermal limiting, a feature not easily available in discrete designs, provides virtually absolute protection against overload. Excessive power dissipation or inadequate heat sinking causes the thermal limiting circuitry to turn off the device preventing excessive heating. The LM195 offers a significant increase in reliability as well as simplifying power circuitry. In some applications, where protection is unusually difficult, such as switching regulators, lamp or solenoid drivers where normal power dissipation is low, the LM195 is especially advantageous. The LM195 is easy to use and only a few precautions need be observed. Excessive collector to emitter voltage can destroy the LM195 as with any power transistor. When the device is used as an emitter follower with low source impedance, it is necessary to insert a 5.0k resistor in series with the base lead to prevent possible emitter follower oscillations. Although the device is usually stable as an emitter follower, the resistor eliminates the possibility of trouble without degrading performance. Finally, since it has good high frequency response, supply bypassing is recommended. Features ■ ■ ■ ■ ■ ■ ■ ■ Internal thermal limiting Greater than 1.0A output current 3.0 μA typical base current 500 ns switching time 2.0V saturation Base can be driven up to 40V without damage Directly interfaces with CMOS or TTL 100% electrical burn-in Ordering Information NS Part Number SMD Part Number NS Package Number Package Description LM195H/883 5962–8777801XA H03B 3LD T0–5 Metal Can Connection Diagram TO-5 Metal Can Package 20156504 Bottom View See NS Package Number H03B © 2010 National Semiconductor Corporation 201565 www.national.com LM195QML Ultra Reliable Power Transistors November 30, 2010 LM195QML Schematic Diagram 20156511 1.0 Amp Lamp Flasher Simplified Circuit 20156516 20156501 www.national.com 2 LM195QML Absolute Maximum Ratings (Note 1) Collector to Emitter Voltage Collector to Base Voltage Base to Emitter Voltage (Forward) Base to Emitter Voltage (Reverse) Collector Current Power Dissipation (Note 2) Operating Temperature Range H-Pkg 42V 42V 42V 20V Internally Limited Internally Limited −55°C ≤ TA ≤ +125°C −65°C ≤ TA ≤ +150°C 260°C Storage Temperature Range Lead Temperature (Soldering, 10 sec.) Thermal Resistance θJA H-Pkg; Still Air @ 0.5W H-Pkg; 500LF/Min Air Flow @ 0.5W 192°C/W 66°C/W θJC H-Pkg @ 1.0W 29°C/W Quality Conformance Inspection Mil-Std-883, Method 5005 - Group A Subgroup Description Temp (°C) 1 Static tests at +25 2 Static tests at +125 3 Static tests at -55 4 Dynamic tests at +25 5 Dynamic tests at +125 6 Dynamic tests at -55 7 Functional tests at +25 8A Functional tests at +125 8B Functional tests at -55 9 Switching tests at +25 10 Switching tests at +125 11 Switching tests at -55 12 Settling time at +25 13 Settling time at +125 14 Settling time at -55 3 www.national.com LM195QML LM195H/883 Electrical Characteristics DC Parameter Symbol VCE Collector to Emitter Parameter Operating Voltage DC Parameter Symbol Conditions IC ≤ IMax Notes Min (Note 3) Max Unit Subgroups 42 V 1, 2, 3 Max Unit Subgroups 1, 2, 3 Base to Emitter Parameter Conditions Notes Min (Note 3) 42 V 1.2 A 1 1 A 2, 3 2 V 1, 2 2.5 V 3 IC ≤ IMax 5 µA 1, 2, 3 VCE = 42V, VBE = 0V 5 mA 1, 2, 3 BVBE Breakdown Voltage VCE ≤ 42V ISC Collector Current VCE ≤ 7V VSat Saturation Voltage IC = 1A IB Base Current IQ Quiescent Current VBk Breakdown Delta VBE Thr Thermal Response 0 ≤ VBE ≤ 42V, VC = 46-42V, IL = 50mA -0.03 0.01 V 1 VC = 46-38V -0.03 0.01 V 1 VC = 50-42V -0.03 0.01 V 1 100µS -10 100 mV 1 500µS -10 70 mV 1 2mS -10 50 mV 1 20mS -10 10 mV 1 Min Max Unit Subgroups AC Parameter Symbol Parameter Conditions Notes tON Response Time VI = 0-2V, RL = 36Ω, V+ = 36V 1.8 µS 9, 10, 11 tOFF Response Time VI = 2-0V, RL = 36Ω, V+ = 36V 1.8 µS 9, 10, 11 Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions. Note 2: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJmax (maximum junction temperature), θJA (package junction to ambient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is PDmax = (TJmax - TA)/ θJA or the number given in the Absolute Maximum Ratings, whichever is lower. Note 3: Parameter tested go−no−go only. www.national.com 4 LM195QML Typical Performance Characteristics Bias Current Quiescent Current 20156535 20156536 Base Emitter Voltage Base Current 20156538 20156537 Saturation Voltage Response Time 20156539 20156540 5 www.national.com LM195QML Response Time 10V Transfer Function 20156541 20156507 36V Transfer Function Transconductance 20156508 20156509 Small Signal Frequency Response 20156510 www.national.com 6 LM195QML Typical Applications 1.0 Amp Voltage Follower 20156512 *Solid Tantalum Power PNP Time Delay 20156513 *Protects against excessive base drive **Needed for stability 20156514 7 www.national.com LM195QML 1.0 MHz Oscillator 20156515 1.0 Amp Negative Regulator 20156517 †Solid Tantalum www.national.com 8 LM195QML 1.0 Amp Positive Voltage Regulator 20156518 †Solid Tantalum Fast Optically Isolated Switch Optically Isolated Power Transistor 20156520 20156519 CMOS or TTL Lamp Interface Two Terminal Current Limiter 20156522 20156521 9 www.national.com LM195QML 40V Switch *Drive Voltage 0V to ≥ 10V ≤ 42V 20156523 6.0V Shunt Regulator with Crowbar Two Terminal 100 mA Current Regulator 20156525 20156524 Low Level Power Switch Power One-Shot 20156526 Turn ON = 350 mV Turn OFF = 200 mV 20156527 T = R1C R2 = 3R1 R2 ≤ 82k www.national.com 10 LM195QML Emitter Follower High Input Impedance AC Emitter Follower 20156528 *Need for Stability 20156529 Fast Follower 20156530 *Prevents storage with fast fall time square wave drive Power Op Amp 20156531 *Adjust for 50 mA quiescent current †Solid Tantalum 11 www.national.com LM195QML 6.0 Amp Variable Output Switching Regulator 20156532 *Sixty turns wound on Arnold Type A-083081-2 core. **Four devices in parallel †Solid tantalum www.national.com 12 Released 11/30/2010 Revision A Section Changes New Release, Corporate format 13 1 MDS data sheets converted into one Corp. data sheet format. MNLM195-H Rev 0BL will be archived. www.national.com LM195QML Revision History Section LM195QML Physical Dimensions inches (millimeters) unless otherwise noted TO-5 Metal Can Package NS Package Number H03B www.national.com 14 LM195QML Notes 15 www.national.com LM195QML Ultra Reliable Power Transistors 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® 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® Solutions Serial Digital Interface (SDI) www.national.com/sdi Temperature Sensors www.national.com/tempsensors SolarMagic™ www.national.com/solarmagic PLL/VCO www.national.com/wireless www.national.com/training PowerWise® Design University THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION (“NATIONAL”) PRODUCTS. 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