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PDF AZ431-A Fiche technique - Diodes

Numéro de référence AZ431-A
Description ADJUSTABLE PRECISION SHUNT REGULATORS
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AZ431-A Datasheet, Description
AZ431-A
ADJUSTABLE PRECISION SHUNT REGULATORS
Description
Features
The AZ431-A is a three-terminal adjustable shunt regulator with
guaranteed thermal stability over a full operation range. It features
sharp turn-on characteristics, low temperature coefficient and low
output impedance, which make it ideal substitute for Zener diode in
applications such as switching power supply, charger and other
adjustable regulators.
The output voltage of AZ431-A can be set to any value between VREF
(2.5V) and the corresponding maximum cathode voltage (36V).
The AZ431-A precision reference is offered in two voltage tolerance:
0.4% and 0.8%.
This IC is available in 4 packages: TO92 (bulk or ammo packing),
SOT23, SOT25 and SOT89.
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 Coefficient with
20PPM/oC Typical
Sink Current Capacity from 1mA to 100mA
Low Output Noise
Wide Operating Range of -40 to +125oC
Lead-Free Packages: TO92, SOT23, SOT25, SOT89
Totally Lead-Free; RoHS Compliant (Notes 1 & 2)
Lead-Free Packages, Available in “Green” Molding Compound:
TO92, SOT23, SOT25, SOT89
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
Charger
Voltage Adapter
Switching Power Supply
Graphic Card
Precision Voltage Reference
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds
Pin Assignments
(Top View)
ANODE
3
(Top View)
(Top View)
12
REF
CATHODE
SOT23
123
REF ANODE CATHODE
SOT89 (Option 1)
123
REF ANODE CATHODE
SOT89 (Option 2)
AZ431-A
Document number: DS36721 Rev. 5 - 2
1 of 21
www.diodes.com
September 2015
© Diodes Incorporated
AZ431-A Fiche technique
Typical Applications Circuit (Cont.)
AZ431-A
Current Source or Current Limit
Precision 5V 1A Regulator
PWM Converter with Reference
AZ431-A
Document number: DS36721 Rev. 5 - 2
3 of 21
www.diodes.com
September 2015
© Diodes Incorporated

3 Page

AZ431-A pdf
Electrical Characteristics (Cont.)
AZ431-A
Test Circuit 4 for VKA = VREF
Test Circuit 5 for VKA > VREF
Test Circuit 6 for IOFF
AZ431-A
Document number: DS36721 Rev. 5 - 2
6 of 21
www.diodes.com
September 2015
© Diodes Incorporated

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Un datasheet est un document fourni par le constructeur du composant, où figurent toutes les données techniques sur le produit: puissance dissipée, courant maximal, tension de seuil, tension de claquage, température de stockage, etc.


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