The LT431 is a low voltage three terminal adjustable shunt regulator with a guaranteed thermal stability over applicable temperature ranges. The output voltage can be set to any value between 2.495V (VREF) to 36V with two external resistors. The high precise Reference voltage tolerance is ±0.4% and ±1.0% by LT431. This device has a typical output impedance of 0.2Ω. Active output circuitry provides a very sharp turn on characteristic, making this device excel lent replacement for Zener diodes in many applications.

Technical Datasheet [PDF]

• Precision reference voltage : LT431O : 2.495V±0.4%
• Adjustable output voltage is VREF to 36V
• Sink current capability is 200mA
• Low dynamic output impedance is 0.2Ω (typ.)
• Minimum Cathode current for regulation is 0.2mA(typ.)
• Plastic material has UL flammability classification 94V-0

Write a review