LM336Z-2.5

National Semiconductor is now part of Texas Instruments. Search http://www.ti.com/ for the latest technical information and details on our current products and services. 5.0V Reference Diode General Description The LM136-5.0/LM236-5.0/LM336-5.0 integrated circuits are precision 5.0V shunt regulator diodes. These monolithic IC voltage references operate as a low temperature coefficient 5.0V zener with 0.6Ω dynamic impedance. A third terminal on the LM136-5.0 allows the reference voltage and temperature coefficient to be trimmed easily. The LM136-5.0 series is useful as a precision 5.0V low voltage reference for digital voltmeters, power supplies or op amp circuitry. The 5.0V makes it convenient to obtain a stable reference from low voltage supplies. Further, since the LM136-5.0 operates as a shunt regulator, it can be used as either a positive or negative voltage reference. The LM136-5.0 is rated for operation over −55°C to +125°C while the LM236-5.0 is rated over a −25°C to +85°C temperature range. The LM336-5.0 is rated for operation over a 0°C to +70°C temperature range. See the connection diagrams for available packages. For applications requiring 2.5V see LM136-2.5. Features ■ ■ ■ ■ ■ ■ ■ ■ ■ Adjustable 4V to 6V Low temperature coefficient Wide operating current of 600 μA to 10 mA 0.6Ω dynamic impedance ± 1% initial tolerance available Guaranteed temperature stability Easily trimmed for minimum temperature drift Fast turn-on Three lead transistor package Connection Diagrams TO-92 Plastic Package SO Package 571604 Bottom View Order Number LM336Z-5.0 or LM336BZ-5.0 See NS Package Number Z03A 571607 Order Number LM336M-5.0 or LM336BM-5.0 See NS Package Number M08A TO-46 Metal Can Package 571605 Bottom View Order Number LM136H-5.0, LM136H-5.0/883, LM236H-5.0, LM136AH-5.0, LM136AH-5.0/883, or LM236AH-5.0 See NS Package Number H03H © 2009 National Semiconductor Corporation 5716 www.national.com LM136-5.0/LM236-5.0/LM336-5.0 5.0V Reference Diode February 27, 2009 LM136-5.0 LM236-5.0 LM336-5.0 LM136-5.0/LM236-5.0/LM336-5.0 Typical Applications 5.0V Reference 571601 5.0V Reference with Minimum Temperature Coefficient 571615 † Adjust to 5.00V * Any silicon signal diode Trimmed 4V to 6V Reference with Temperature Coefficient Independent of Breakdown Voltage 571603 * Does not affect temperature coefficient www.national.com 2 If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Reverse Current 15mA Forward Current 10mA Storage Temperature −60°C to +150°C Operating Temperature Range (Note 2) LM136-5.0 −55°C to +150°C LM236-5.0 −25°C to +85°C 0°C to +70°C 260°C 300°C 215°C 220°C See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” (appendix D) for other methods of soldering surface mount devices. Electrical Characteristics (Note 3) Parameter LM136A-5.0/LM236A-5.0 LM136-5.0/LM236-5.0 Conditions Reverse Breakdown Voltage LM336B-5.0 LM336-5.0 Units Min Typ Max Min Typ Max 4.9 4.95 5.00 5.00 5.1 5.05 4.8 4.90 5.00 5.00 5.2 5.1 V V 6 12 6 20 mV 0.6 1.2 0.6 2 Ω 4 12 mV TA=25°C, IR=1 mA LM136-5.0/LM236-5.0/LM336-5.0 LM136A-5.0/LM236A-5.0, LM336B-5.0 Reverse Breakdown Change With Current TA=25°C, Reverse Dynamic Impedance TA=25°C, IR=1 mA, f = 100 Hz 600 μA≤IR≤10 mA Temperature Stability VR Adjusted 5.00V (Note 4) IR=1 mA, (Figure 2) 0°C≤TA≤70°C (LM336-5.0) −25°C≤TA≤+85°C (LM236-5.0) 7 18 mV −55°C≤TA≤+125°C (LM136-5.0) 20 36 mV Reverse Breakdown Change With Current 600 μA≤IR≤10 mA 6 17 6 Adjustment Range Circuit of Figure 1 ±1 Reverse Dynamic Impedance IR = 1 mA 0.8 1.6 0.8 Long Term Stability TA=25°C±0.1°C, IR=1 mA, t = 1000 hrs 20 24 ±1 20 mV V 2.5 Ω ppm Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device beyond its specified operating conditions. Note 2: For elevated temperature operation, Tj max is: LM136 LM236 LM336 150°C 125°C 100°C Thermal Resistance θja (Junction to Ambient) TO-92 180°C/W (0.4″ Leads) TO-46 SO-8 440°C/W 165°C/W 170°C/W (0.125″ Leads) θja (Junction to Case)  80°C/W N/A N/A Note 3: Unless otherwise specified, the LM136-5.0 is specified from −55°C≤TA≤+125°C, the LM236-5.0 from −25°C≤TA≤+85°C and the LM336-5.0 from 0° C≤TA≤+70°C. Note 4: Temperature stability for the LM336 and LM236 family is guaranteed by design. Design limits are guaranteed (but not 100% percent production tested) over the indicated temperature and supply voltage ranges. These limits are not used to calculate outgoing quality levels. Stability is defined as the maximum charge in VREF from 25°C to TA(min) or TA(max). 3 www.national.com LM136-5.0/LM236-5.0/LM336-5.0 LM336-5.0 Soldering Information TO-92 Package (10 sec.) TO-46 Package (10 sec.) SO Package Vapor Phase (60 sec.) Infrared (15 sec.) Absolute Maximum Ratings (Note 1) LM136-5.0/LM236-5.0/LM336-5.0 Typical Performance Characteristics Reverse Voltage Change Zener Noise Voltage 571617 571618 Dynamic Impedance Response Time 571620 571619 Reverse Characteristics Temperature Drift 571622 571621 www.national.com 4 LM136-5.0/LM236-5.0/LM336-5.0 Forward Characteristics 571623 Breakdown Voltage (Trim Range = ±1.0V Typical) Application Hints The LM136-5.0 series voltage references are much easier to use than ordinary zener diodes. Their low impedance and wide operating current range simplify biasing in almost any circuit. Further, either the breakdown voltage or the temperature coefficient can be adjusted to optimize circuit performance. Figure 1 shows an LM136-5.0 with a 10k potentiometer for adjusting the reverse breakdown voltage. With the addition of R1 the breakdown voltage can be adjusted without affecting the temperature coefficient of the device. The adjustment range is usually sufficient to adjust for both the initial device tolerance and inaccuracies in buffer circuitry. If minimum temperature coefficient is desired, four diodes can be added in series with the adjustment potentiometer as shown in Figure 2. When the device is adjusted to 5.00V the temperature coefficient is minimized. Almost any silicon signal diode can be used for this purpose such as a 1N914, 1N4148 or a 1N457. For proper temperature compensation the diodes should be in the same thermal environment as the LM136-5.0. It is usually sufficient to mount the diodes near the LM136-5.0 on the printed circuit board. The absolute resistance of the network is not critical and any value from 2k to 20k will work. Because of the wide adjustment range, fixed resistors should be connected in series with the pot to make pot setting less critical. 571610 FIGURE 2. Temperature Coefficient Adjustment (Trim Range = ±0.5V Typical) 571609 FIGURE 1. LM136-5.0 with Pot for Adjustment of 5 www.national.com LM136-5.0/LM236-5.0/LM336-5.0 Typical Applications Precision Power Regulator with Low Temperature Coefficient 571611 * Adjust for 6.25V across R1 5V Crowbar 571612 Adjustable Shunt Regulator 571613 www.national.com 6 LM136-5.0/LM236-5.0/LM336-5.0 Linear Ohmmeter 571614 Op Amp with Output Clamped 571624 Bipolar Output Reference 571625 7 www.national.com LM136-5.0/LM236-5.0/LM336-5.0 5.0V Square Wave Calibrator 571626 10V Buffered Reference 571627 Low Noise Buffered Reference 571628 Wide Input Range Reference 571629 www.national.com 8 LM136-5.0/LM236-5.0/LM336-5.0 Schematic Diagram 571616 9 www.national.com LM136-5.0/LM236-5.0/LM336-5.0 Physical Dimensions inches (millimeters) unless otherwise noted TO-46 Metal Can Package (H) Order Number LM136H-5.0, LM136H-5.0/883, LM236H-5.0, LM136AH-5.0, LM136AH-5.0/883 or LM236AH-5.0 NS Package Number H03H Small Outline (SO-8) Package Order Number LM336M-5.0 or LM336BM-5.0 NS Package Number M08A www.national.com 10 LM136-5.0/LM236-5.0/LM336-5.0 Plastic Package (Z) Order Number LM336Z-5.0 or LM336BZ-5.0 NS Package Number Z03A 11 www.national.com LM136-5.0/LM236-5.0/LM336-5.0 5.0V Reference Diode Notes For more National Semiconductor product information and proven design tools, visit the following Web sites at: 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 Reference www.national.com/vref Design Made Easy www.national.com/easy PowerWise® Solutions www.national.com/powerwise Solutions www.national.com/solutions Serial Digital Interface (SDI) www.national.com/sdi Mil/Aero www.national.com/milaero Temperature Sensors www.national.com/tempsensors SolarMagic™ www.national.com/solarmagic Wireless (PLL/VCO) www.national.com/wireless Analog University® www.national.com/AU THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION (“NATIONAL”) PRODUCTS. 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