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TLV Series 1.24 V Low Voltage Precision Adjustable Shunt Regulator - SOT-23-3

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Mfr. Name: onsemi
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Product Specification Section
onsemi TLV431BSN1T1G - Technical Attributes
Attributes Table
Shunt Type: Shunt
Output Type: Adjustable
Accuracy: ±0.5%
Reference Voltage: 1.24V
Output Voltage: 1.24V to 16V
Output Impedance: 0.4Ω
Cathode Current: 0.1mA to 20mA
Power Dissipation: 0.13W
Operating Temp Range: -40°C to +85°C
Package Style:  SOT-23 (SC-59,TO-236)
Mounting Method: Surface Mount
Features & Applications

The TLV431A and B series are precision low voltage shunt regulators that are programmable over a wide voltage range of 1.24 V to 16 V.

The TLV431A series features a guaranteed reference accuracy of ±1.0% at 25°C and ±2.0% over the entire industrial temperature range of −40°C to 85°C. For TLV431B series, the accuracy is even higher, it’s ±0.5% and ±1.0% respectively. These devices exhibit a sharp low current turn−on characteristic with a low dynamic impedance of 0.20 Ω over an operating current range of 100 µA to 20 mA. This combination of features makes this series an excellent replacement for zener diodes in numerous applications circuits that require a precise reference voltage. When combined withan optocoupler, the TLV431A/B can be used as an error amplifier for controlling the feedback loop in isolated low output voltage (3.0 V to 3.3 V) switching power supplies. These devices are available in economical TO−92−3 and micro size TSOP−5 and SOT−23−3 packages.

Key Features:

  • Programmable Output Voltage Range of 1.24 V to 16 V
  • Voltage Reference Tolerance ±1.0% for A Series and ±0.5% for B Series
  • Sharp Low Current Turn−On Characteristic
  • Low Dynamic Output Impedance of 0.20 Ω from 100 µA to 20 mA
  • Wide Operating Current Range of 50 µA to 20 mA
  • Micro Miniature TSOP−5, SOT−23−3 and TO−92−3 Packages
  • Pb−Free Packages are Available


  • Low Output Voltage (3.0 V to 3.3 V) Switching Power Supply Error Amplifier
  • Adjustable Voltage or Current Linear and Switching Power Supplies
  • Voltage Monitoring
  • Current Source and Sink Circuits
  • Analog and Digital Circuits Requiring Precision References
  • Low Voltage Zener Diode Replacements
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Factory Lead Time:
29 Weeks
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