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IC VREF SHUNT ADJ 0.5% SOT23-3
Qualified for Automotive Applications
Operation From −40°C to 125°C
Reference Voltage Tolerance at 25°C
−1% . . . A Grade
− 0.5% . . . B Grade
Typical Temperature Drift
− 14 mV (Q Temp)
Low Output Noise
0.2-Ω Typical Output Impedance
Sink-Current Capability = 1 mA to 100 mA
Adjustable Output Voltage = Vref to 36 V
description
The TL431 is a three-terminal adjustable shunt regulator with specified thermal stability over applicable automotive temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V, with two external resistors (see Figure 17). This device has a typical output impedance of 0.2 Ω. Active output circuitry provides a sharp turn-on 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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