| VO (V) | 1.24 |
| Reference voltage | Adjustable |
| Initial accuracy (Max) (%) | 1 |
| VO adj (Min) (V) | 1.24 |
| VO adj (Max) (V) | 18 |
| Iz for regulation (Min) (uA) | 60 |
| Rating | Automotive |
| Temp coeff (Max) (ppm/ degree C) | 161 |
| Operating temperature range (C) | -40 to 125 |
| Iout/Iz (Max) (mA) | 80 |
- 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.
