AS431_12 Datasheet, PDF (1/18 Pages) BCD Semiconductor Manufacturing Limited – ADJUSTABLE PRECISION SHUNT REGULATORS

Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
General Description
Features
AS431
The AS431 is a three-terminal adjustable shunt regula-
tor with guaranteed thermal stability over a full opera-
tion range. It features sharp turn-on characteristics, low
temperature coefficient and low output impedance,
which make it ideal substitute for Zener diode in appli-
cations such as switching power supply, charger and
other adjustable regulators.
The output voltage of AS431 can be set to any value
between V_REF (2.5V) and the corresponding maximum
cathode voltage (36V).
The AS431 precision reference is offered in two volt-
age tolerance: 0.5% and 1.0%.
This IC is available in 4 packages: TO-92 (bulk or
ammo packing), SOT-23, SOT-23-5 and SOT-89.
· Programmable Precise Output Voltage from 2.5V
to 36V
· High Stability under Capacitive Load
· Low Temperature Deviation: 4.5mV Typical
· Low Equivalent Full-range Temperature Coeffi-
cient with 20PPM/^oC Typical
· Sink Current Capacity from 1mA to 100mA
· Low Output Noise
· Wide Operating Range of -40 to 125^oC
Applications
· Charger
· Voltage Adapter
· Switching Power Supply
· Graphic Card
· Precision Voltage Reference
SOT-89
TO-92(Bulk Packing)
TO-92(Ammo Packing)
Dec. 2012 Rev. 2. 6
SOT-23
SOT-23-5
Figure 1. Package Types of AS431
BCD Semiconductor Manufacturing Limited
1