Texas Instruments TL1431M Precision Adjustable (Programmable) Shunt Reference TL1431MFKB

The TL1431MFKB is a precision adjustable shunt reference from Texas Instruments, designed for applications requiring accurate voltage referencing. It features an initial voltage tolerance of 0.4% and a typical output impedance of 0.2 Oc, ensuring stable performance. The output voltage can be adjusted between approximately 2.5 V and 36 V using two external resistors, making it versatile for various applications. The device supports a sink current capability ranging from 1 mA to 100 mA and has a fast turn-on time of 500 ns. It is characterized for operation over a military temperature range of -55¬8C to 125¬8C, making it suitable for demanding environments. The TL1431MFKB can be utilized in applications such as adjustable voltage and current referencing, secondary side regulation in flyback switch-mode power supplies, and as a Zener diode replacement.