| VO (V) | 2.5 |
| Reference voltage | Adjustable |
| Initial accuracy (Max) (%) | 0.5, 1, 2 |
| VO adj (Min) (V) | 2.5 |
| VO adj (Max) (V) | 36 |
| Iz for regulation (Min) (uA) | 400 |
| Rating | Catalog |
| Temp coeff (Max) (ppm/ degree C) | 97 |
| Operating temperature range (C) | -40 to 85, 0 to 70 |
| Iout/Iz (Max) (mA) | 100 |
- Average Temperature Coefficient 50 ppm/°C
- Temperature Compensated for Operation Over
the Full Temperature Range - Programmable Output Voltage
- Fast Turnon Response
- Low-Output Noise
- Low-Dynamic Output Impedance
- Available in Space-Saving SOIC-8, SOT-23, and
TO-92 Packages
The LM431 is a 3-terminal adjustable shunt regulator with ensured temperature stability over the entire temperature range of operation. The output voltage may be set at any level greater than 2.5 V (VREF) up to 36 V merely by selecting two external resistors that act as a voltage divided network. Due to the sharp turnon characteristics this device is an excellent replacement for many Zener diode applications.
The LM431 is available in space-saving SOIC-8, SOT-23, and TO-92 packages.