TLVH431
- 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.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TLVH431, TLVH432 Low-Voltage Adjustable Precision Shunt Regulators datasheet (Rev. N) | PDF | HTML | 2024/6/6 | ||
| 技術文章 | 確定您的光耦合器具有正確偏壓 | PDF | HTML | Download English Version | PDF | HTML | 2024/3/20 | |
| 電子書 | Tips and tricks for designing with voltage references (Rev. A) | 2021/5/7 | ||||
| 應用說明 | Using the TL431 for Undervoltage and Overvoltage Detection (Rev. A) | 2019/12/11 | ||||
| 選擇指南 | 431 Device Nomenclature (Rev. B) | 2019/9/18 | ||||
| 電子書 | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019/6/28 | ||||
| 技術文章 | Designing for isolated DC/DC converter shunt safety | PDF | HTML | 2015/8/29 | |||
| 應用說明 | Designing Overcurrent protection for TPL7407L Peripheral Driver | 2014/11/5 | ||||
| 應用說明 | Setting the shunt voltage on an adjustable shunt regulator | 2011/9/1 | ||||
| 更多文件說明 | SLL Precision Reference Product Clip | 2006/2/23 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23 (DBZ) | 3 | Ultra Librarian |
| SOT-23 (DBV) | 5 | Ultra Librarian |
| TO-92 (LP) | 3 | Ultra Librarian |
| SOT-89 (PK) | 3 | Ultra Librarian |
| SOT-SC70 (DCK) | 6 | Ultra Librarian |