The TL431-Q1 is a three-pin adjustable shunt regulator with specified thermal stability
over applicable automotive temperature ranges. The output voltage can be set to any value from
VREF (approximately 2.5 V) to 36 V, with two external
resistors (see ). This device has a typical output impedance of 0.2 Ω.
circuitry provides a sharp turnon characteristic, making this device
an excellent replacement for
Zener diodes in many applications, such as onboard regulation,
adjustable power supplies, and
switching power supplies.
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