The LM236-2.5, LM336-2.5, and LM336B-2.5

integrated circuits are precision 2.5-V shunt

regulator diodes. These reference circuits

operate as low-temperature-coefficient 2.5-V

Zener diodes with a 0.2-Ω dynamic impedance. A

third terminal provided on the circuit allows the

reference voltage and temperature coefficient to

be trimmed easily.