The HA17431H series is a family of voltage referenced shunt regulators. The main application of these products is in voltage regulators that provide a variable output voltage. The HA17431H series products are provided in a wide range of packages; TO-92 insertion mounting packages and MPAK-5 (5 pin), MPAK (3 pin), UPAK surface mounting packages are available. The on-chip high-precision reference voltage source can provide 1% accuracy, which have a VKA max of 36 volts.