17431 Datasheet | Hitachi Semiconductor

Description The HA17431 series is temperature-pensated variable shunt regulators. The main application of these products is in voltage regulators that provide a variable output voltage. The on-chip high-precision reference voltage source can provide ±1% accuracy in the V versions, which have a VKA max of 16 volts. The HA17431VLP, which is provided in the MPAK-5 package, is designed for use in switching mode power supplies. It provides a built-in photocoupler bypass resistor for the PS pin, and an error amplifier can be easily constructed on the supply side. Features - The V versions provide 2.500 V ±1% at Ta = 25°C - The HA17431VLP includes a photocoupler bypass resistor (2 kΩ) - The reference voltage has a low temperature coefficient - The MPAK-5(5-pin), MPAK(3-pin) and UPAK miniature packages are optimal for use on high mounting density circuit boards - Car use is provided Block Diagram K PS- REF 2.500V + - 2kΩ A Note: - The PS pin is only provided by the HA17431VLP. HA17431 Series Application Circuit Example Switching power supply secondary-side error amplification circuit Vout R + R1 - K PS 2kΩ REF A R2 HA17431VLP Ordering Information Item Reference voltage (at 25°C) Accuracy Max Typ Min Cathode voltage Cathode current Car use Version V Version ±1% 2.525 V 2.500 V 2.475 V 16 V max 50 m A max HA17431VPJ A Version ±2.2% 2.550 V 2.495 V 2.440 V 40 V max 150 m A max HA17431PNAJ HA17431PAJ HA17431FPAJ Normal Version ±4% 2.595 V 2.495 V 2.395 V 40 V max 150 m A max Package TO-92 HA17431PJ...