LM336-2.5 Datasheet, PDF (1/6 Pages) Fairchild Semiconductor – Programmable Shunt Regulator

LM336-2.5/LM336B-2.5
Programmable Shunt Regulator
www.fairchildsemi.com
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
Internal Block Diagram
R1
Q9
C2 _R4 ^Q7
Q8
C1
Q2
Q10
Q11
Q4
Q6 Q12
Q1
Q13
Q3 Q5
R2
1
1. Adj 2. + 3. -
Q17
R5 R6 R7
2⁺
Q16
R8
Q15
1 ADJUST
R9
R10
Q14
Q18
R3
3^_
©2002 Fairchild Semiconductor Corporation
Rev. 1.0.1