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Description
The LM431A/LM431B/LM431C are three terminal output
adjustable regulators with thermal stability over operating
temperature range. The output voltage can be set any value
between V
REF
(approximately 2.5 volts) and 36 volts with
two external resistors. These devices have a typical dynamic
output impedance of 0.2鈩?Active output circuit provides a
sharp turn-on characteristic, making these devices excellent
replacement for Zener Diodes in many applications.
TO-92
1
1. Ref 2. Anode 3. Cathode
8-DIP
8-SOP
1
1
1.Cathode 2.3.4.5.7.NC
6.Anode 8.Ref
SOT-89
1.Cathode 2.3.6.7.Anode
4.5.NC 8.Ref
SOT-23F
3
1
1
2
1. Ref 2. Anode 3. Cathode 1. Cathode 2. Ref 3. Anode
Internal Block Diagram
Rev. 1.0.4
漏2001 Fairchild Semiconductor Corporation