Datasheet AN431 (Diodes)
| Manufacturer | Diodes |
| Description | Adjustable Precision Shunt Regulators |
| Pages / Page | 13 / 1 — A Product Line of. Diodes Incorporated. AN431. ADJUSTABLE PRECISION SHUNT … |
| File Format / Size | PDF / 364 Kb |
| Document Language | English |
A Product Line of. Diodes Incorporated. AN431. ADJUSTABLE PRECISION SHUNT REGULATORS. Description. Pin Assignments. (Top View)
Model Line for this Datasheet
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A Product Line of Diodes Incorporated AN431 ADJUSTABLE PRECISION SHUNT REGULATORS Description Pin Assignments
The AN431 series ICs are three-terminal adjustable shunt regulators with guaranteed thermal stability over a full operation range. These
(Top View)
ICs feature sharp turn-on characteristics, low temperature coefficient
and low output impedance, which make them ideal substitutes for
ANODE Zener diodes in applications such as switching power supply, charger
and other adjustable regulators.
3
The output voltage of these ICs can be set to any value between VREF
(2.5V) and the maximum cathode voltage (36V).
The AN431 precision reference is offered in two voltage tolerance:
0.5% and 1.0%.
1 2 These ICs are available in SOT-23 package.
CATHODE REF
Features SOT-23
Programmable Precise Output Voltage from 2.5V to 36V High Stability under Capacitive Load
Applications
Low Temperature Deviation: 4.5mV Typical Low Equivalent Full-range Temperature Coefficient with Charger
20PPM/oC Typical Voltage Adapter
Low Dynamic Output Resistance: 0.15Ω Typical Switching Power Supply
Sink Current Capacity from 1mA to 100mA Graphic Card
Low Output Noise Precision Voltage Reference
Wide Operating Range of -40 to +125oC Lead-Free Packages: SOT-23
Totally Lead-Free; RoHS Compliant (Notes 1 & 2)
Lead-Free Packages, Available in “Green” Molding Compound: SOT-23
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
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.
Typical Applications Circuit
R3 V V IN OUT R1 V V REF AN431 OUT=(1+R1/R2)*VREF R2 Shunt Regulator AN431 1 of 13 April 2015 Document number: DS37414 Rev. 3 - 2
www.diodes.com
© Diodes Incorporated
The AN431 series ICs are three-terminal adjustable shunt regulators with guaranteed thermal stability over a full operation range. These
(Top View)
ICs feature sharp turn-on characteristics, low temperature coefficient
and low output impedance, which make them ideal substitutes for
ANODE Zener diodes in applications such as switching power supply, charger
and other adjustable regulators.
3
The output voltage of these ICs can be set to any value between VREF
(2.5V) and the maximum cathode voltage (36V).
The AN431 precision reference is offered in two voltage tolerance:
0.5% and 1.0%.
1 2 These ICs are available in SOT-23 package.
CATHODE REF
Features SOT-23
Programmable Precise Output Voltage from 2.5V to 36V High Stability under Capacitive Load
Applications
Low Temperature Deviation: 4.5mV Typical Low Equivalent Full-range Temperature Coefficient with Charger
20PPM/oC Typical Voltage Adapter
Low Dynamic Output Resistance: 0.15Ω Typical Switching Power Supply
Sink Current Capacity from 1mA to 100mA Graphic Card
Low Output Noise Precision Voltage Reference
Wide Operating Range of -40 to +125oC Lead-Free Packages: SOT-23
Totally Lead-Free; RoHS Compliant (Notes 1 & 2)
Lead-Free Packages, Available in “Green” Molding Compound: SOT-23
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
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.
Typical Applications Circuit
R3 V V IN OUT R1 V V REF AN431 OUT=(1+R1/R2)*VREF R2 Shunt Regulator AN431 1 of 13 April 2015 Document number: DS37414 Rev. 3 - 2
www.diodes.com
© Diodes Incorporated
