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| www.fairchildsemi.com 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 coefficient 2.5V zener with 0.2W dynamic impedance. A third terminal on the LM336-2.5/LM336B-2.5 allows the reference voltage and temperature coefficient to be trimmed easily. LM3362.5/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 2+ R1 Q9 R5 Q8 C2 R4 Q7 C1 Q16 R8 Q2 Q10 Q11 Q15 R9 Q4 Q1 Q3 Q5 Q6 Q12 Q14 Q18 R10 R6 R7 Q17 1 ADJUST Q13 R2 R3 3_ Rev. 1.0.1 (c)2002 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 10 1 6 12 1.4 LM336B-2.5 Min. 2.465 Typ. 2.49 2.6 0.2 1.8 3 0.4 20 Max. 2.515 6 0.6 6 10 1.0 Unit V mV mV mV ppm/Khr 2 LM336-2.5/LM336B-2.5 Typical Performance 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 Dimensions in millimeters 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 11/12/02 0.0m 001 Stock#DSxxxxxxxx 2002 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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