TLV431B
- Low-voltage operation, VREF = 1.24V
- Adjustable output voltage, VO = VREF to 6V
- Reference voltage tolerances at
25°C
- 0.5% for TLV431B
- 1% for TLV431A
- 1.5% for TLV431
- Typical temperature drift
- 4mV (0°C to 70°C)
- 6mV (–40°C to 85°C)
- 11mV (–40°C to 125°C)
- Low operational cathode current, 80µA typical
- 0.25Ω typical output impedance
- Ultra-small SC-70 package offers 40% smaller footprint than SOT-23-3
- See TLVH431 and TLVH432 for:
- Wider VKA (1.24V to 18 V) and IK (80mA)
- Additional SOT-89 package
- Multiple pinouts for SOT-23-3 and SOT-89 packages
- On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. on all other products, production processing does not necessarily include testing of all parameters.
The TLV431 device is a low-voltage 3-terminal adjustable voltage reference with specified thermal stability over applicable industrial and commercial temperature ranges. Output voltage can be set to any value between VREF (1.24V) and 6V with two external resistors (see the Parameter Measurement Information section). 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 TLV431 device is an ideal voltage reference in isolated feedback circuits for 3V to 3.3V switching-mode power supplies. These devices have a typical output impedance of 0.25Ω. Active output circuitry provides a very sharp turnon characteristic, making them excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.
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 | TLV431x Low-Voltage Adjustable Precision Shunt Regulator datasheet (Rev. Z) | PDF | HTML | 2024/6/12 | ||
| 應用說明 | Voltage Reference Selection and Design Tips For Data Converters (Rev. B) | PDF | HTML | 2024/1/9 | |||
| 電子書 | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019/6/28 | ||||
| 應用說明 | Supplying TPS61200 With a Single Solar Cell (Rev. B) | 2011/9/6 |
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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 |
| SOT-SC70 (DCK) | 6 | Ultra Librarian |
| TO-92 (LP) | 3 | Ultra Librarian |
| SOT-89 (PK) | 3 | Ultra Librarian |