SHUNT REGULATORS. AZ431-A Datasheet

AZ431-A REGULATORS. Datasheet pdf. Equivalent

Part AZ431-A
Description ADJUSTABLE PRECISION SHUNT REGULATORS
Feature Product Brief ADJUSTABLE PRECISION SHUNT REGULATORS Description The AZ431-A series ICs are three-ter.
Manufacture BCDSEMI
Total Page 18 Pages
Datasheet
Download AZ431-A Datasheet



AZ431-A
ADJUSTABLE PRECISION SHUNT REGULATORS
General Description
Features
Data Sheet
AZ431-B
The AZ431-B is a three-terminal adjustable shunt regu-
lator with guaranteed thermal stability over a full oper-
ation 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 AZ431-B can be set to any value
between VREF (2.5V) and the corresponding maximum
cathode voltage.
The AZ431-B precision reference is offered in two
voltage tolerance: 0.4% and 0.8%.
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 18V
· 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 125oC
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. 3.3
SOT-23
SOT-23-5
Figure 1. Package Types of AZ431-B
BCD Semiconductor Manufacturing Limited
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AZ431-A
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
Pin Configuration
AZ431-B
N Package
(SOT-23)
ANODE
3
R Package
(SOT-89)
K Package
(SOT-23-5)
NC 1
5 ANODE
1
REF
2
CATHODE
123
REF ANODE CATHODE
*
(Note 1)
CATHODE
2
3
4 REF
Note 1: * Pin 2 is attached to substrate and
must be connected to ANODE or open
Z Package
(TO-92(Bulk Packing))
Z Package
(TO-92(Ammo Packing))
3 CATHODE
2 ANODE
1 REF
3 CATHODE
2 ANODE
1 REF
Figure 2. Pin Configuration of AZ431-B (Top View)
Functional Block Diagram
CATHODE
REF
VREF
+
-
Dec. 2012 Rev. 3.3
ANODE
Figure 3. Functional Block Diagram of AZ431-B
BCD Semiconductor Manufacturing Limited
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