TL431
Einstellbarer Präzisions-Shunt-Regler
TL431
- Reference voltage tolerance at 25°C
- 0.5% (B grade)
- 1% (A grade)
- 2% (Standard grade)
- Adjustable output voltage: Vref to 36V
- Operation from −40°C to 125°C
- Typical temperature drift (TL43xB)
- 6mV (C temp)
- 14mV (I temp, Q temp)
- Low Output Noise
- 0.2Ω Typical output impedance
- Sink-current capability: 1mA to 100mA
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 2.5V) and 36V, with two external resistors. These devices have a typical output impedance of 0.2Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications, such as on-board 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 DBV, 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 grade, respectively. In addition, low output drift versus temperature verifies 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.
Technische Dokumentation
Design und Entwicklung
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ATL431EVM-001 — ATL431 einstellbarer Shunt-Regler – Evaluierungsmodul
The ATL431EVM-001 evaluation module (EVM) features the functionality and adjustability of the ATL431 by letting you program the cathode voltage with various resistor values. You can also set the cathode current using the various resistors in series with the supply. (...)
TL431 Family Unencrypted PSpice Transient and AC Model (Rev. B)
TL431x, TL432x TINA-TI AC Reference Design
TL431x, TL432x TINA-TI Transient & AC Spice Model
TL431x, TL432x TINA-TI Transient Reference Design
TL431CALC — TL431 Design Calculator
The TL431CALC spreadsheet calculates all component parameters for any desired output voltage for the TL43x, TLV43x and TL1431. The spreadsheet includes limits for each device. Resistor values are calculated to the nearest 1% value.
Unterstützte Produkte und Hardware
Produkte
Shunt-Spannungsreferenzen
Software
Berechnungstool
PSPICE-FOR-TI — PSpice® für TI Design-und Simulationstool
Viele TI-Referenzdesigns beinhalten TL431
Mit unserem Referenzdesign-Auswahltool können Sie die für Ihre Anwendung und Ihre Parameter am besten geeigneten Designs durchsehen und ermitteln.
| Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
|---|---|---|
| PDIP (P) | 8 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |
| SOP (PS) | 8 | Ultra Librarian |
| SOT-23 (DBV) | 5 | Ultra Librarian |
| SOT-23 (DBZ) | 3 | Ultra Librarian |
| SOT-89 (PK) | 3 | Ultra Librarian |
| SOT-SC70 (DCK) | 6 | Ultra Librarian |
| TO-92 (LP) | 3 | Ultra Librarian |
| TSSOP (PW) | 8 | Ultra Librarian |
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