LM195,LM395 LM195/LM395 Ultra Reliable Power Transistors Literature Number: SNOSBO4B LM195/LM395 Ultra Reliable Power Transistors General Description The LM195/LM395 are fast, monolithic power integrated circuits with complete overload protection. These devices, which act as high gain power transistors, have included on the chip, current limiting, power limiting, and thermal overload protection making them virtually impossible to destroy from any type of overload. In the standard TO-3 transistor power package, the LM195 will deliver load currents in excess of 1.0A and can switch 40V in 500 ns. 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 imped- Simplified Circuit ance, 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. For low-power applications (under 100 mA), refer to the LP395 Ultra Reliable Power Transistor. The LM195/LM395 are available in the standard TO-3, Kovar TO-5, and TO-220 packages. The LM195 is rated for operation from -55C to +150C and the LM395 from 0C to +125C. Features n n n n n n n n Internal thermal limiting Greater than 1.0A output current 3.0 A 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 1.0 Amp Lamp Flasher 00600916 00600901 (c) 2004 National Semiconductor Corporation DS006009 www.national.com LM195/LM395 Ultra Reliable Power Transistors July 2000 LM195/LM395 Connection Diagrams TO-5 Metal Can Package TO-3 Metal Can Package 00600904 Bottom View Order Number LM195H/883 See NS Package Number H03B (Note 5) 00600902 Bottom View Order Number LM195K/883 See NS Package Number K02A (Note 5) TO-220 Plastic Package 00600903 Case is Emitter Top View Order Number LM395T See NS Package Number T03B www.national.com 2 Base to Emitter Voltage (Reverse) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Collector Current Internally Limited Power Dissipation Internally Limited 20V Operating Temperature Range Collector to Emitter Voltage LM195 LM195 42V LM395 36V -55C to +150C LM395 0C to +125C Storage Temperature Range Collector to Base Voltage -65C to +150C Lead Temperature LM195 42V LM395 36V Base to Emitter Voltage (Forward) LM195 LM395 (Soldering, 10 sec.) 260C 42V 36V Preconditioning 100% Burn-In In Thermal Limit Electrical Characteristics (Note 2) Parameter Conditions LM195 Min Collector-Emitter Operating Voltage Typ IQ IC IMAX LM395 Max Min Typ 42 Units Max 36 V (Note 4) Base to Emitter Breakdown Voltage 0 VCE VCEMAX 42 36 60 V Collector Current TO-3, TO-220 VCE 15V 1.2 2.2 1.0 2.2 A TO-5 VCE 7.0V 1.2 1.8 1.0 1.8 A Saturation Voltage IC 1.0A, TA = 25C Base Current 0 IC IMAX 0 VCE VCEMAX Quiescent Current (IQ) Vbe = 0 0 VCE VCEMAX Base to Emitter Voltage IC = 1.0A, TA = +25C Switching Time VCE = 36V, RL = 36, TA = 25C 1.8 2.0 1.8 2.2 V 3.0 5.0 3.0 10 A 2.0 5.0 2.0 10 mA 0.9 0.9 V 500 500 ns Thermal Resistance Junction to TO-3 Package (K) 2.3 3.0 2.3 3.0 C/W Case (Note 3) TO-5 Package (H) 12 15 12 15 C/W 4 6 C/W TO-220 Package (T) 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. Note 2: Unless otherwise specified, these specifications apply for -55C Tj +150C for the LM195 and 0C +125C for the LM395. Note 3: Without a heat sink, the thermal resistance of the TO-5 package is about +150C/W, while that of the TO-3 package is +35C/W. Note 4: Selected devices with higher breakdown available. Note 5: Refer to RETS195H and RETS195K drawings of military LM195H and LM195K versions for specifications. 3 www.national.com LM195/LM395 Absolute Maximum Ratings (Note 1) LM195/LM395 Typical Performance Characteristics (for K and T Packages) Collector Characteristics Short Circuit Current 00600934 00600933 Bias Current Quiescent Current 00600935 00600936 Base Emitter Voltage Base Current 00600938 00600937 www.national.com 4 Saturation Voltage LM195/LM395 Typical Performance Characteristics (for K and T Packages) (Continued) Response Time 00600939 00600940 Response Time 10V Transfer Function 00600941 00600907 36V Transfer Function Transconductance 00600908 00600909 5 www.national.com LM195/LM395 Typical Performance Characteristics (for K and T Packages) (Continued) Small Signal Frequency Response 00600910 Schematic Diagram 00600911 www.national.com 6 LM195/LM395 Typical Applications 1.0 Amp Voltage Follower 00600912 *Solid Tantalum Power PNP Time Delay 00600913 *Protects against excessive base drive **Needed for stability 00600914 1.0 MHz Oscillator 00600915 7 www.national.com LM195/LM395 Typical Applications (Continued) 1.0 Amp Negative Regulator 00600917 Solid Tantalum 1.0 Amp Positive Voltage Regulator 00600918 Solid Tantalum www.national.com 8 LM195/LM395 Typical Applications (Continued) Fast Optically Isolated Switch Optically Isolated Power Transistor 00600920 00600919 CMOS or TTL Lamp Interface Two Terminal Current Limiter 00600922 00600921 40V Switch 00600923 *Drive Voltage 0V to 10V 42V 6.0V Shunt Regulator with Crowbar Two Terminal 100 mA Current Regulator 00600925 00600924 9 www.national.com LM195/LM395 Typical Applications (Continued) Low Level Power Switch Power One-Shot 00600926 Turn ON = 350 mV Turn OFF = 200 mV 00600927 T = R1C R2 = 3R1 R2 82k Emitter Follower High Input Impedance AC Emitter Follower 00600928 *Need for Stability 00600929 Fast Follower 00600930 *Prevents storage with fast fall time square wave drive www.national.com 10 LM195/LM395 Typical Applications (Continued) Power Op Amp 00600931 *Adjust for 50 mA quiescent current Solid Tantalum 6.0 Amp Variable Output Switching Regulator 00600932 *Sixty turns wound on Arnold Type A-083081-2 core. **Four devices in parallel Solid tantalum 11 www.national.com LM195/LM395 Physical Dimensions inches (millimeters) unless otherwise noted TO-5 Metal Can Package Order Number LM195H/883 NS Package Number H03B TO-3 Metal Can Package Order Number LM195K/883 NS Package Number K02A www.national.com 12 LM195/LM395 Ultra Reliable Power Transistors Physical Dimensions inches (millimeters) unless otherwise noted (Continued) TO-220 Plastic Package Order Number LM395T NS Package Number T03B National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. For the most current product information visit us at www.national.com. LIFE SUPPORT POLICY NATIONAL'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ``Banned Substances'' as defined in CSP-9-111S2. National Semiconductor Americas Customer Support Center Email: new.feedback@nsc.com Tel: 1-800-272-9959 www.national.com National Semiconductor Europe Customer Support Center Fax: +49 (0) 180-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Francais Tel: +33 (0) 1 41 91 8790 National Semiconductor Asia Pacific Customer Support Center Email: ap.support@nsc.com National Semiconductor Japan Customer Support Center Fax: 81-3-5639-7507 Email: jpn.feedback@nsc.com Tel: 81-3-5639-7560 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI. Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation. Information of third parties may be subject to additional restrictions. Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement specifically governing such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of TI products in such safety-critical applications, notwithstanding any applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its representatives against any damages arising out of the use of TI products in such safety-critical applications. TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use. TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products are designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: Products Applications Audio www.ti.com/audio Communications and Telecom www.ti.com/communications Amplifiers amplifier.ti.com Computers and Peripherals www.ti.com/computers Data Converters dataconverter.ti.com Consumer Electronics www.ti.com/consumer-apps DLP(R) Products www.dlp.com Energy and Lighting www.ti.com/energy DSP dsp.ti.com Industrial www.ti.com/industrial Clocks and Timers www.ti.com/clocks Medical www.ti.com/medical Interface interface.ti.com Security www.ti.com/security Logic logic.ti.com Space, Avionics and Defense www.ti.com/space-avionics-defense Power Mgmt power.ti.com Transportation and Automotive www.ti.com/automotive Microcontrollers microcontroller.ti.com Video and Imaging RFID www.ti-rfid.com OMAP Mobile Processors www.ti.com/omap Wireless Connectivity www.ti.com/wirelessconnectivity TI E2E Community Home Page www.ti.com/video e2e.ti.com Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright (c) 2011, Texas Instruments Incorporated