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2022-09-23 10:06:27
AS431 is an adjustable precision shunt regulator
feature
Programmable precision output voltage 2.5V to 36V
Very accurate reference voltage: 0.15% typical
High stability under capacitive load
Low temperature deviation: 4.5mV typical
Low equivalent full-scale temperature coefficient, typical value is 20PPM/oC
Low dynamic output resistance: 0.15Ω typical
·Sink current capacity from 1mA to 100mA
·Low output noise
Wide operating range -40 to 125oC
application
·charger
·Voltage adapter
·Switching power supply
· Graphics card
·Precision voltage reference
General Instructions
The AS431 series ICs are three-terminal adjustable shunt regulators that guarantee thermal stability over the entire operating range. These integrated circuits have strong conduction characteristics, low temperature coefficient and low output impedance, and are ideal replacements for Zener diodes in applications such as switching power supplies, chargers and other adjustable voltage regulators.
The output voltage of these ICs can be set to any value between VREF (2.5V) and the maximum cathode voltage (36V).
The AS431 precision reference offers gap tolerances in two bands: 0.4% and 0.8%.
These ICs are available in 4 packages: TO-92 , SOT-23-3, SOT-23-5 and SOT-89.
Pin configuration
Functional block diagram
Typical performance characteristics
typical application
Mechanical Dimensions
to -92 units: mm (in)
SOT-23-3 Units: mm (inches)
SOT-23-5 Units: mm (inches)
SOT-89 Units: mm (inches)
