TL431 Programmable Shunt Regulator – TO-92 Package

TL431 Programmable Shunt Regulator – TO-92 Package

The TL431 and TL432 devices are three-terminal adjustable shunt regulators, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V, with two external resistors. These devices have a typical output impedance of 0.2 Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies. The TL432 device has exactly the same functionality and electrical specifications as the TL431 device but has different pinouts for the DVB, DBZ, and PK packages. Both the TL431 and TL432 devices are offered in three grades, with initial tolerances (at 25°C) of 0.5%, 1%, and 2%, for the B, A, and standard grades, respectively. In addition, low output drift versus temperature ensures good stability over the entire temperature range. The TL43xxC devices are characterized for operation from 0°C to 70°C, the TL43xxI devices are characterized for operation from –40°C to 85°C, and the TL43xxQ devices are characterized for operation from –40°C to 125°C. This product is known as TL431 Adjustable Precision Shunt Regulator TO-92 Package, TL431, Adjustable Precision Shunt Regulator, Component, TL431, TL431 Transistor, TL431 Transistor Adjustable Precision Shunt Regulator.

Features:

• Reference Voltage Tolerance at 25°C
  – 0.5% (B Grade)
  – 1% (A-Grade)
  – 2% (Standard Grade)
• Adjustable Output Voltage: Vref to 36 V
• Operation From −40°C to 125°C
• Typical Temperature Drift (TL43xB)
  – 6 mV (C Temp)
  – 14 mV (I Temp, Q Temp)
• Low Output Noise
• 0.2-Ω Typical Output Impedance
• Sink-Current Capability: 1 mA to 100 mA

Features/Specs:

• Series: TL431
• Function: Adjustable Precision Shunt Regulator
• Product Type: Voltage References
• Output Voltage: Adjustable
• Initial Accuracy: 1 %
• Temperature Coefficient: 92 PPM / C
• Series VREF – Input Voltage – Max: 36 V
• Maximum Output Voltage: 36 V
• Shunt Current – Min: 600 uA
• Shunt Current – Max: 100 mA
• Minimum Operating Temperature: -40°C
• Maximum Operating Temperature: +125°C
• Mounting Style: Through Hole
• Package/Case: TO-92-3
• Length: 4.83 mm
• Width: 3.43 mm
• Height: 3.68 mm
• Weight: 213 mg

Applications:

• Adjustable Voltage and Current Referencing
• Secondary Side Regulation in Flyback SMPSs
• Zener Replacement
• Voltage Monitoring
• Comparator with Integrated Reference

Datasheet: TL431

Package Includes:

• 1 x TL431 Programmable Shunt Regulator – TO-92 Package

Note: Product Images are shown for illustrative purposes only and may differ from the actual product.