TLVH431B-EP
- Low-voltage operation: down to 1.24 V
- Reference voltage tolerances 0.5% at 25°C
- Adjustable output voltage, VO = VREF to 18 V
- Wide operating cathode current range:
200 µA to 70 mA - 0.25-Ω typical output impedance
- Supports defense and aerospace applications:
- Controlled baseline
- Available in extended (–55°C to 125°C) temperature range
- Extended product life cycle
- Extended product-change notification
- Product traceability
The TLVH431B-EP 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 (1.24 V) and 18 V with two external resistors (see Figure 24). This device operates from a lower voltage (1.24 V) than the widely used TL431 and TL1431 shunt-regulator references.
When used with an optocoupler, the TLVH431B-EP device is ideal for voltage references in isolated feedback circuits designed for 3-V to 3.3-V switching-mode power supplies. It has a typical output impedance of 0.25 Ω. Active output circuitry provides a very sharp turn-on characteristic, making the TLVH431B-EP device an excellent replacement for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | TLVH431B-EP Enhanced Plastic 0.5% Low-Voltage Wide-Operating Current Adjustable Precision Shunt Regulator datasheet | PDF | HTML | 2019年 12月 6日 |
E-book | Tips and tricks for designing with voltage references (Rev. A) | 2021年 5月 7日 | ||
E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019年 6月 28日 | ||
White paper | Voltage reference selection basics white paper (Rev. A) | 2018年 10月 23日 |
設計與開發
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