Low Voltage Adjustable Shunt
Regulator
ST431
123
Block Diagram
Catho
REF ANODE CATHODE
Voltage Reference Accuracy of 0.
1% Sink Current Capability from 1mA to 100mA Adjustable Output Voltage from Vref to 36V Low Output Noise Typical Output Dynamic Impedance Less Than 200mΩ
Ref
+ -
Vref Anode
Typical Application Circuit
V+ Rs
Note: Rs should provide cathode current = 1 mA
R1 27.
5K 0 1%
R2 27.
5K 0.
1%
5V Precision
Regulator
Vo=5V
Low Voltage Adjustable Shunt
Regulator
ST431
MAXIMUM RATINGS RATING
Cathode to Anode Voltage Continuous Cathode Current Reference Input Current Power Dissipation Operating Temperature Range
Storage Temperature Range
SYMBOL VKA IK IREF PD TC
Tstg
VALUE -0.
...