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.
VOLTAGE REF, SHUNT, 2.495V-36V, SOT-23-3; Voltage Reference Type:Shunt - Adjustable; Product Range:LM431 Series; Reference Voltage:2.495V to 36V; Initial Accuracy:0.5%; Temperature Coefficient:± 50ppm/°C; Voltage Reference Case RoHS Compliant: Yes Newark Electronics
V-Ref Adjustable 2.495V to 37V 100mA 3-Pin SOT-23 T/R Avnet America
V-Ref Adjustable 2.495V to 37V 100mA 3-Pin SOT-23 T/R Avnet Europe