LM336

©2002 Fairchild Semiconductor Corporation www.fairchildsemi.com Rev. 1.0.1 Features • Low Temperature Coefficient • Guaranteed Temperature Stability 4mV Typical • 0.2Ω 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. 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. Adj 2. + 3. - 1 Internal Block Diagram 2 1 3 + _ Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 R1 R2 R3 R4 R5 R6 R7 R9 R8 R10 C1C2 ADJUST LM336-2.5/LM336B-2.5 Programmable Shunt Regulator LM336-2.5/LM336B-2.5 2 Absolute Maximum Ratings Electrical Characteristics (0°C < TA < +70°C, unless otherwise specified) Parameter Symbol Value Unit Reverse Current IR 15 mA Forward Current IF 10 mA Operating Temperature Range LM336-2.5/LM336B-2.5 TOPR 0 ~ +70 °C Storage Temperature Range TSTG - 60 ~ +150 °C Parameter Symbol Conditions LM336-2.5 LM336B-2.5 Unit Min. Typ. Max. Min. Typ. Max. Reverse Breakdown Voltage VR TA = +25°C IR = 1mA 2.44 2.49 2.54 2.465 2.49 2.515 V Reverse Breakdown Change with Current ∆VR/∆IR TA = +25°C 400uA ≤ IR ≤ 10mA - 2.6 10 - 2.6 6 mV Reverse Dynamic Impedance ZD TA = +25°C IR = 1mA - 0.2 1 - 0.2 0.6 Ω Temperature Stability STT IR = 1mA - 1.8 6 - 1.8 6 mV Reverse Breakdown Change with Current ∆VR/∆IR 400uA ≤ IR ≤ 10mA - 3 12 - 3 10 mV Reverse Dynamic Impedance ZD IR = 1mA - 0.4 1.4 - 0.4 1.0 Ω Long Term Stability In Reference Voltage ST IR = 1mA - 20 - - 20 - ppm/Khr LM336-2.5/LM336B-2.5 3 Typical Performance Characteristics Figure 1. Reverse Voltage Change Figure 3. Temperature Drift Figure 2. Reverse Characteristics Figure 4. Forward Characteristics LM336-2.5/LM336B-2.5 4 Mechanical Dimensions Package Dimensions in millimeters 0.46 ±0.10 1.27TYP (R2.29) 3. 86 M AX [1.27 ±0.20] 1.27TYP [1.27 ±0.20] 3.60 ±0.20 14 .4 7 ±0 .4 0 1. 02 ±0 .1 0 (0. 25 ) 4. 58 ±0 .2 0 4.58 +0.25 –0.15 0.38 +0.10 –0.05 0. 38 + 0. 10 – 0. 05 TO-92 Reverse Current (mA) LM336-2.5/LM336B-2.5 5 Ordering Information Product Number Package Operating Temperature LM336Z2.5 TO-92 0°C to +70°C LM336BZ25 LM336-2.5/LM336B-2.5 11/12/02 0.0m 001 Stock#DSxxxxxxxx  2002 Fairchild Semiconductor Corporation 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. 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. www.fairchildsemi.com 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.