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LM336-2.5/LM336B-2.5
Programmable Shunt Regulator
Features
* * * * * Low temperature coefficient Guaranteed temperature stability 4mV typical 0.2 dynamic impedance 1.0% initial tolerance available Easily trimmed for minimum temperature drift
Description
The LM336-2.5/LM336B-2.5 integrated Circuits are precision 2.5V shunt regulators. The monolithic IC voltage reference operates as a low temperature coeffcient 2.5V zener with 0.2W dynamic impedance. A third terminal on the LM336-2.5/LM336B-2.5 allow the reference voltage and temperature coefficent to be trimmed easily. LM336-2.5/ LM336B-2.5 are useful as a precision 2.5V low voltage reference for digital voltmeters, power supplies or op amp circuitry. The 2.5V makes it convenient to obtain a stable reference from low voltage supplies. Further, since the LM336-2.5/LM336B-2.5 operate as shunt regulators, they can be used as either a positive or negative voltage reference.
TO-92
1 1. Adj 2. + 3. -
Internal Block Diagram
Rev. 1.0.0
(c)2001 Fairchild Semiconductor Corporation
LM336-2.5/LM336B-2.5
Absolute Maximum Ratings
Parameter Reverse Current Forward Current Operating Temperature Range LM336-2.5/LM336B-2.5 Storage Temperature Range Symbol IR IF TOPR TSTG Value 15 10 0 ~ + 70 - 60 ~ + 150 Unit mA mA C C
Electrical Characteristics
(0C < TA < +70C, unless otherwise specified) Parameter Reverse Breakdown Voltage Reverse Breakdown Change with Current Reverse Dynamic Impedance Temperature Stability Reverse Breakdown Change with Current Reverse Dynamic Impedance Long Term Stability In reference voltage Symbol VR VR/IR ZD STT VR/IR ZD ST Conditions TA = +25C IR = 1mA TA = +25C 400uA IR 10mA TA = +25C IR = 1mA IR = 1mA 400uA IR 10mA IR = 1mA IR = 1mA LM336-2.5 Min. 2.44 Typ. 2.49 2.6 0.2 1.8 3 0.4 20 Max. 2.54 6 0.6 6 10 1 LM336B-2.5 Min. 2.465 Typ. 2.49 2.6 0.2 1.8 3 0.4 20 Max. 2.515 10 1 6 12 1.4 Unit V mV mV mV ppm/Khr
2
LM336-2.5/LM336B-2.5
Typical Perfomance Characteristics
Figure 1. Reverse Voltage Change
Figure 2. Reverse Characteristics
Figure 3. Temperature Drift
Figure 4. Forward Characteristics
3
LM336-2.5/LM336B-2.5
Mechanical Dimensions
Package
TO-92
4.58 -0.15
+0.25
Reverse Current (mA)
0.46
14.47 0.40
0.10
4.58 0.20
1.27TYP [1.27 0.20] 3.60
0.20
1.27TYP [1.27 0.20]
0.38 -0.05
+0.10
3.86MAX
1.02 0.10
0.38 -0.05
+0.10
(R2.29)
4
(0.25)
LM336-2.5/LM336B-2.5
Ordering Information
Product Number LM336Z2.5 LM336BZ25 Package TO-92 Operating Temperature 0C to + 70C
5
LM336-2.5/LM336B-2.5
DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD 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 (c) 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 of the user.
www.fairchildsemi.com 6/1/01 0.0m 001 Stock#DSxxxxxxxx 2001 Fairchild Semiconductor Corporation
2. A critical component in 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.

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