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Part: LM136-2.5MW8
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Description:
Company: National Semiconductor Corporation
Datasheet: Download LM136-2.5MW8 datasheet File size : 41 kB
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Datasheet text preview:
LM136-2.5/LM236-2.5/LM336-2.5V Reference Diode
May 1998
LM136-2.5/LM236-2.5/LM336-2.5V Reference Diode
General Description
The LM136-2.5/LM236-2.5 and LM336-2.5 integrated circuits are precision 2.5V shunt regulator diodes. These monolithic IC voltage references operate as a low-temperature-coefficient 2.5V zener with 0.2 dynamic impedance. A third terminal on the LM136-2.5 allows the reference voltage and temperature coefficient to be trimmed easily. The LM136-2.5 series is useful as a precision 2.5V low voltage reference for digital voltmeters, power supplies or op amp circuitry. The 2.5V make it convenient to obtain a stable reference from 5V logic supplies. Further, since the LM136-2.5 operates as a shunt regulator, it can be used as either a positive or negative voltage reference. The LM136-2.5 is rated for operation over -55°C to +125°C while the LM236-2.5 is rated over a -25°C to +85°C temperature range. The LM336-2.5 is rated for operation over a 0°C to +70°C temperature range. See the connection diagrams for available packages.
Features
n n n n n n n n Low temperature coefficient Wide operating current of 400 µA to 10 mA 0.2 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 TO-46 Metal Can Package
DS005715-8
Bottom View Order Number LM236Z-2.5, LM236AZ-2.5, LM336Z-2.5 or LM336BZ-2.5 See NS Package Number Z03A
DS005715-20
Bottom View Order Number LM136H-2.5, LM136H-2.5/883, LM236H-2.5, LM136AH-2.5, LM136AH-2.5/883 or LM236AH-2.5 See NS Package Number H03H
© 1999 National Semiconductor Corporation
DS005715
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Connection Diagrams
(Continued) SO Package
DS005715-12
Top View Order Number LM236M-2.5, LM236AM-2.5, LM336M-2.5 or LM336BM-2.5 See NS Package Number M08A
Typical Applications
2.5V Reference 2.5V Reference with Minimum Temperature Coefficient Wide Input Range Reference
DS005715-9
DS005715-11
DS005715-10
Adjust to 2.490V *Any silicon signal diode
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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Reverse Current Forward Current Storage Temperature 15 mA 10 mA -60°C to +150°C
Operating Temperature Range (Note 2) LM136 -55°C to +150°C LM236 -25°C to +85°C LM336 0°C to +70°C Soldering Information TO-92 Package (10 sec.) 260°C TO-46 Package (10 sec.) 300°C SO Package Vapor Phase (60 sec.) 215°C Infrared (15 sec.) 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)
LM136A-2.5/LM236A-2.5 Parameter Reverse Breakdown Voltage Conditions TA = 25°C, IR = 1 mA LM136, LM236, LM336 Reverse Breakdown Change With Current Reverse Dynamic Impedance Temperature Stability (Note 4) LM136A, LM236A, LM336B TA = 25°C, 400 µAIR10 mA TA = 25°C, IR = 1 mA, f = 100 Hz VR Adjusted to 2.490V IR = 1 mA, Figure 2 0°CTA70°C (LM336) -25°CTA+85°C (LM236H, LM236Z) -25°C TA +85°C (LM236M) -55°CTA+125°C (LM136) Reverse Breakdown Change With Current Reverse Dynamic Impedance Long Term Stability IR = 1 mA TA = 25°C ± 0.1°C, IR = 1 mA, t = 1000 hrs 0.4 20 1 0.4 20 1.4 ppm 400 µAIR10 mA 7.5 12 3 18 18 10 3 12 mV mV mV 3.5 9 1.8 6 mV mV 2.440 2.465 2.490 2.490 2.6 0.2 2.540 2.515 6 0.6 2.390 2.440 2.490 2.490 2.6 0.2 2.590 2.540 10 1 V V mV LM136-2.5/LM236-2.5 Min Typ Max Min LM336B-2.5 LM336-2.5 Typ Max Units
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 ja (Junction to Ambient) ja (Junction to Case)
TO-92 180°C/W (0.4" leads) 170°C/W (0.125" lead) n/a
TO-46 440°C/W 80°C/W
SO-8 165°C/W n/a
Note 3: Unless otherwise specified, the LM136-2.5 is specified from -55°C TA +125°C, the LM236-2.5 from -25°C TA +85°C and the LM336-2.5 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% 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 change in Vref from 25°C to TA (min) or TA (max).
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