TLVH431B-Q1
- Qualified for Automotive Applications
- Low-Voltage Operation: Down to 1.24 V
- Reference Voltage Tolerances at 25°C
- 0.5% for B Grade
- 1% for A Grade
- Adjustable Output Voltage, VO = VREF to 18 V
- Wide Operating Cathode Current Range: 100 µA to 70 mA
- 0.25- Typical Output Impedance
- –40°C to 125°C Specifications
The TLVH431 devices are low-voltage 3-terminal adjustable voltage references, with thermal stability specified over the automotive temperature range. Output voltage can be set to any value between VREF (1.24 V) and 18 V with two external resistors (see Figure 2). These devices operate from a lower voltage (1.24 V) than the widely used TL431 and TL1431 shunt-regulator references.
When used with an optocoupler, the TLVH431 devices are ideal voltage reference in isolated feedback circuits for 3-V to 3.3-V switching-mode power supplies. They have a typical output impedance of 0.25 . Active output circuitry provides a very sharp turn-on characteristic, making the TLVH431 an excellent replacement for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | TLVH431A-Q1, TLVH431B-Q1 Low-Voltage Adjustable Precision Shunt Regulator . 数据表 (Rev. B) | 2011年 3月 28日 | |||
功能安全信息 | TLVH431B-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 2021年 9月 22日 | |||
应用简报 | Automotive LED Lighting with Adjustable Shunt References | 2018年 7月 17日 |
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