HA17431 Series
Shunt Regulator
ADE-204-049A (Z)
Rev.1 Sep. 2002
Description
The HA17431 series is temperature-compensat...
HA17431 Series
Shunt
Regulator
ADE-204-049A (Z)
Rev.1 Sep. 2002
Description
The HA17431 series is temperature-compensated 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
GND
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 mA max HA17431VPJ
A Version ±2.2% 2.550 V 2.495 V 2.440 V 40 V max 150 mA max
HA17431PNAJ HA17431P...