TLV431BSN1T1G Integrated Circuits (ICs)

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1. Describe

The TLV431BSN1T1G 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. The TLV431B series features higher reference accuracy of ±0.5% and ±1.0% respectively. For the TLV431C series, the accuracy is even higher. It is ±0.2% and ±1.0% respectively. These devices exhibit a sharp low current turn−on characteristic with a low dynamic impedance of 0.20  over an operating current range of 100 A 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 with an optocoupler, the TLV431A/B/C 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.

2. Features

    1. Programmable Output Voltage Range of 1.24 V to 16 V

    2. Voltage Reference Tolerance ±1.0% for A Series, ±0.5% for B Series and ±0.2% for C Series

    3. Sharp Low Current Turn−On Characteristic

    4. Low Dynamic Output Impedance of 0.20  from 100 A to 20 mA

    5. Wide Operating Current Range of 50 A to 20 mA

    6. Micro Miniature TSOP−5, SOT−23−3 and TO−92−3 Packages

    7. NCV and SCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable

    8. These are Pb−Free and Halide−Free Devices

3. Applications

    1. Low Output Voltage (3.0 V to 3.3 V) Switching Power Supply Error Amplifier

    2. Adjustable Voltage or Current Linear and Switching Power Supplies

    3. Voltage Monitoring

    4. Current Source and Sink Circuits

    5. Analog and Digital Circuits Requiring Precision References

    6. Low Voltage Zener Diode Replacements

4. PACKAGE DIMENSIONS