TLVH432
Einstellbarer Präzisions-Shunt-Regler, 1,5 %, Niederspannung, breiter Betriebsstrom (umgekehrte Pinb
TLVH432
- Low-voltage operation: down to 1.24V
- Reference voltage tolerances at 25°C
- 0.5% for B grade
- 1% for A grade
- 1.5% for standard grade
- Adjustable output voltage, VO = VREF to 18V
- Wide operating cathode current range: 100µA to 70mA
- 0.25Ω typical output impedance
- –40°C to +125°C specifications
- TLVH432 provides alternative pinouts for SOT-23-3 and SOT-89 packages
- Ultra-small SC-70 package offers 40% smaller footprint than SOT-23-3
The TLVH431 and TLVH432 devices are low-voltage 3-terminal adjustable voltage references, with specified thermal stability over applicable industrial and commercial temperature ranges. Output voltage can be set to any value between VREF (1.24V) and 18V with two external resistors (see Figure 6-2). These devices operate from a lower voltage (1.24V) than the widely used TL431 and TL1431 shunt-regulator references.
When used with an optocoupler, the TLVH431 and TLVH432 devices are an excellent choice for voltage references in isolated feedback circuits for 3V to 3.3V switching-mode power supplies. The devices have a typical output impedance of 0.25Ω. Active output circuitry provides a very sharp turn-on characteristic, making the TLVH431 and TLVH432 devices excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.
The TLVH432 device is identical to the TLVH431 device, but is offered with different pinouts for the 3-pin SOT-23 and SOT-89 packages.
Technische Dokumentation
Typ | Titel | Datum | ||
---|---|---|---|---|
* | Data sheet | TLVH431, TLVH432 Low-Voltage Adjustable Precision Shunt Regulators datasheet (Rev. N) | PDF | HTML | 06 Jun 2024 |
Application note | Optimization of a Shunt Reference for Flyback Converters | PDF | HTML | 18 Okt 2023 | |
Application note | Using the TL431 for Undervoltage and Overvoltage Detection (Rev. A) | 11 Dez 2019 | ||
Selection guide | 431 Device Nomenclature (Rev. B) | 18 Sep 2019 | ||
E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 28 Jun 2019 | ||
Application note | Setting the shunt voltage on an adjustable shunt regulator | 01 Sep 2011 | ||
More literature | SLL Precision Reference Product Clip | 23 Feb 2006 |
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. (...)
PSPICE-FOR-TI — PSpice® für TI Design-und Simulationstool
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Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
---|---|---|
SOT-23 (DBZ) | 3 | Ultra Librarian |
SOT-89 (PK) | 3 | Ultra Librarian |
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