TI TLVH431BQDBZRQ1

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 V_REF (1.24 V) and 18 V with two external resistors. 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 Ω. 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.

• 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, V₀ = V_REF to 18 V
• Wide Operating Cathode Current Range: 100 μA to 70 mA
• 0.25-Ω Typical Output Impedance
• -40°C to 125°C Specifications