LM336Z25 ON Semiconductor

LM336Z25 Programmable Shunt Regulator December 2012 LM336Z25 Programmable Shunt Regulator Description Features Low-Temperature Coefficient The LM336Z25 integrated circuit is a precision 2.5 V shunt regulator. The monolithic I voltage reference Guaranteed Temperature Stability: 4 mV (Typical) C operates as a low temperature coefficient 2.5 V Zener 0.2 Dynamic Impedance with 0.2 dynamic impedance. A third terminal on the 1.0% Initial Tolerance Available LM336Z25 allows the reference voltage and temperature Easily Trimmed for Minimum Temperature Drift coefficient to be trimmed. LM336Z25 is useful as a preci- sion 2.5 V low-voltage reference for digital voltmeters, power supplies, or OP-AMP circuitry. The 2.5 V makes it convenient to obtain a stable reference from low-voltage supplies. Further, since the LM336Z25 operates as a shunt regulator, it can be used as either a positive or negative voltage reference. TO-92 1 1. Adj 2.+ 3. - Ordering Information Operating Tem- Part Number Top Mark Package Packing Method perature Range LM336Z25 LM336Z25 TO-92 Bulk 0 ~ +70C LM336Z25X LM336Z25 TO-92 Tape and Reel 1999 Fairchild Semiconductor Corporation www.fairchildsemi.com LM336Z25 Rev. 1.1.0 1 LM336Z25 Programmable Shunt Regulator Block Diagram + Adj - Figure1. Block Diagram Schematic Diagram + 2 R1 Q17 Q9 R5 R6 R7 Q8 Q7 C2 R4 Q16 C1 R8 A Q11 Q15 1 dj Q10 Q2 R10 R9 Q4 Q6 Q12 Q14 Q18 Q13 Q1 Q3 Q5 R3 R2 3 Figure 2. Schematic Diagram 1999 Fairchild Semiconductor Corporation www.fairchildsemi.com LM336Z25 Rev. 1.1.0 2