TLVH431A

Product Folder Order Now Technical Documents Tools & Software Support & Community TLVH431, TLVH431A, TLVH431B TLVH432, TLVH432A, TLVH432B SLVS555L – NOVEMBER 2004 – REVISED APRIL 2020 TLVH431, TLVH432 Low-Voltage Adjustable Precision Shunt Regulators 1 Features 1 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 2 Applications Adjustable voltage reference for data Converters Secondary side regulation in flyback SMPSs Zener replacement with low leakage current Voltage monitoring for power rails Comparator with integrated reference 3 Description 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 Figure 19). These devices operate from a lower voltage (1.24 V) than the widely used TL431 and TL1431 shuntregulator references. When used with an optocoupler, the TLVH431 and TLVH432 devices are ideal voltage references in isolated feedback ...