The TLVH431 and TLVH432 devices are low-voltage 3-terminal adjustable voltage references, 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 ). 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 and TLVH432 devices are ideal voltage references 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 and TLVH432 devices excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.
●The TLVH432 device is identical to the TLVH431 device, but is offered with different pinouts for the 3-pin SOT-23 and SOT-89 packages.
● Low-Voltage Operation: Down to 1.24 V
● Reference Voltage Tolerances at 25°C
● 0.5% for B Grade
● 1% for A Grade
● 1.5% for Standard Grade
● Adjustable Output Voltage, VO = VREF 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
● TLVH432 Provides Alternative Pinouts for SOT-23-3 and SOT-89 Packages
● Ultra-Small SC-70 Package Offers 40% Smaller Footprint than SOT-23-3
