EEE > Power management > Shunt voltage reference > Radiation-hardness-assured (RHA) 0.4% accuracy, 2.4-V to 36-V adjustable shunt reference
Summary
The Texas Instruments TL1431 is a precision programmable reference suitable for aerospace, industrial, auto, telecom, and computing. TL1431 features the fundamental analog building, an accurate voltage reference and op amp with specified thermal stability over commercial, automotive and military temperature ranges.
The device is suitable replacement for Zener diodes and other types of references in applications such as switching power supplies, adjustable power supplies, and onboard regulation because of the sharp turnon characteristic provided by Active output circuitry. The output can be set using two external resistors.
TL1431 can behave as an error amplifier, single voltage reference, comparator with integrated reference or voltage clamp when used with its key components.
Applications
- Adjustable voltage and current referencing
- Secondary side regulation in flyback SMPSs
- Zener replacement
- Voltage monitoring
- Comparator with integrated reference
- Command and data handling (C&DH)
- Optical imaging payload
- Radar imaging payload
- Satellite electrical power system (EPS)
Orderable Part Numbers
Key features
- QMLV qualified to 100-krad(Si) RHA, 5962R99620
- 0.4% initial voltage tolerance
- 0.2-Ω typical output impedance
- Fast turnon: 500 ns
- Sink current capability: 1 mA to 100 mA
- Low reference current (REF)
- Adjustable output voltage: VI(ref) to 36 V
Testing & qualification
Below are the technical documentations available for this product:
- Radiation & reliability report
- Application note
- Space-Grade, 100-krad, Linear Thermoelectric Cooler (TEC) Driver Circuit
- Space-Grade, 100-krad, Window Comparator Circuit
- Space-Grade, 50-krad, 1.25-V, Low-Noise Voltage Reference Circuit
- Failure Containment in Spacecraft Point-of-Load Power Supplies
- Single-Event Effects Confidence Interval Calculations
- Heavy Ion Orbital Environment Single-Event Effects Estimations
- Selection guide
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Last updated: 2021-12-21
TL1431-SP
Radiation-hardness-assured (RHA) 0.4% accuracy, 2.4-V to 36-V adjustable shunt reference
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