AZ431AN-ATRE1
- Manufacturer
- DIODES
- Product Number
- AZ431AN-ATRE1
- Description
- AZ431AN-ATRE1 is a high-performance 3-terminal adjustable precision shunt regulator with SOT23 package, featuring ultra-high output voltage accuracy of 0.4% and adjustable output voltage ranging from 2.5V to 36V.
- Inventory
- 68400
- Datasheet
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AZ431AN-ATRE1.pdf
- Delivery
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- Payment
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Product Overview
AZ431AN-ATRE1 is a high-performance 3-terminal adjustable precision shunt regulator with SOT23 package, featuring ultra-high output voltage accuracy of 0.4% and adjustable output voltage ranging from 2.5V to 36V. The device has excellent thermal stability with a typical full-temperature range temperature coefficient of only 20ppm/℃, a cathode current carrying range of 1mA~100mA, and integrates low dynamic impedance and low output noise characteristics. Compliant with RoHS lead-free environmental standards, it is an ideal voltage regulation and reference choice for scenarios such as switching power supplies, chargers, graphics cards, and precision voltage references.
Key Features
- Ultra-high precision output: The reference voltage accuracy reaches 0.4%, and the reference voltage is accurately stabilized in the range of 2.490V~2.510V at 25℃
- Wide voltage adjustment range: The output voltage can be freely programmed between 2.5V and 36V to meet multi-specification power supply needs
- Excellent thermal stability: The typical full-temperature range reference voltage deviation is only 4.5mV, and the temperature coefficient is as low as 20ppm/℃
- Strong load compatibility: Supports 1mA~100mA cathode current and maintains high stability even under capacitive loads
- Low power consumption and low noise: The typical reference current is only 0.7μA, with both low dynamic impedance (0.15Ω typical value) and low output noise
Technical Specifications
Specification Parameter Value/Characteristic Test Condition/Remarks Reference Voltage (VREF) 2.5V (0.4% precision) TA=25℃, VKA=VREF, IKA=10mA Output Voltage Range 2.5V~36V Adjustable with external voltage divider resistors Cathode Current Range (IKA) 1mA~100mA Recommended operating range Full-Temperature Voltage Deviation (ΔVREF) 4.5mV(typ)/16mV(max) -40℃~+125℃, VKA=VREF, IKA=10mA Temperature Coefficient 20ppm/℃ (typ) Full operating temperature range Dynamic Impedance (ZKA) 0.15Ω(typ)/0.5Ω(max) VKA=VREF, IKA=1mA~100mA, f≤1kHz Reference Current (IREF) 0.7μA(typ)/4μA(max) IKA=10mA, R1=10kΩ, R2=∞ Operating Temperature Range -40℃~+125℃ Meets industrial-grade wide temperature requirements Package Type SOT23 3-pin surface-mount package for miniaturized layout Typical Applications
1. Switching Power Supply Voltage Regulation Circuit
In the feedback voltage regulation circuit of switching power supplies, the 0.4% high precision of AZ431AN-ATRE1 can accurately control the output voltage of the power supply. The wide voltage adjustment range is suitable for multi-specification power supplies such as 5V, 12V, and 24V. The low dynamic impedance characteristic can quickly respond to power supply ripples and ensure the stability and reliability of the power supply output.
2. Charger Voltage Reference
For the voltage detection and reference circuit of fast chargers, the 2.5V precise reference of this device can realize precise control of the charging voltage. The current carrying capacity of 1mA~100mA can match the current demand of the charger in different working stages, and the excellent thermal stability can cope with the temperature rise during the charger's operation and avoid voltage drift.
3. Graphics Card Precision Power Supply
In the core power supply and memory power supply auxiliary circuits of graphics cards, the low-noise characteristic of AZ431AN-ATRE1 can reduce the interference of power supply ripples on display signals. The 0.4% high-precision output can ensure the stability of the graphics card's power supply voltage and avoid screen blooming and freezes caused by voltage fluctuations.
4. Precision Instrument Reference Source
In the internal reference circuit of test instruments such as multimeters and oscilloscopes, the ultra-high precision and low temperature coefficient of the device can provide a stable voltage reference, ensuring the accuracy of the instrument's measurement data. At the same time, the small SOT23 package is suitable for the compact PCB layout inside the instrument.
5. Adjustable Regulated Power Supply
In the output adjustment module of laboratory adjustable regulated power supplies, AZ431AN-ATRE1 can realize wide-range voltage adjustment from 2.5V to 36V through external voltage divider resistors. The 100mA cathode current can meet the load demand of small-power regulated power supplies and provide precise and controllable power supply for experiments.
Why Choose AZ431AN-ATRE1 ?
- Significant precision advantage: The 0.4% voltage accuracy is far higher than that of conventional devices of the same type, meeting the requirements of high-precision power supply and reference
- Strong adaptability: The wide voltage adjustment range of 2.5V~36V can cover most civil and industrial power supply specifications
- Good environmental tolerance: The wide operating temperature range of -40℃~+125℃ and low temperature coefficient of 20ppm/℃ are suitable for complex working conditions
- Circuit simplification: The 3-terminal package only needs external voltage divider resistors to realize voltage adjustment, reducing the complexity of peripheral circuit design
- High cost performance: While achieving ultra-high precision and multi-function, it has excellent batch procurement cost advantages
SUNTOP COMPANY INTRODUCTION
Founded in 2000, Suntop is one of the leading global distributors of electronic components, dedica ted to providing comprehensive procurement and supply chain services to the global electronics manufacturing industry. Our services include distribution, spot trading, PPV cost-saving projects, and inventory management. We not only offer high-quality products but also strive to assist our clients in achieving optimal solutions with minimal time and cost.
As a trusted partner for numerous OEMs, ODMs, CEMs, and EMS companies worldwide, our professional team manages millions of component records from thousands of trading partners across dozens of countries daily through our company database. We maintain close business relationships with major factories and distributors in North America, Europe, and Asia to ensure that our clients stay ahead in a highly competitive market.
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+ —1. In what aspects is the 0.4% precision of AZ431AN-ATRE1 reflected? What is the difference from the 0.8% precision model? >
- The reference voltage range of the device is 2.490V~2.510V at 25℃, with a deviation of only ±0.4%; the voltage range of the 0.8% precision model is 2.480V~2.520V, whose precision and voltage stability are lower than this model, making it more suitable for scenarios with strict precision requirements.
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+ —2. How to achieve voltage adjustment in the range of 2.5V~36V? What requirements do external resistors need to meet? >
- It can be realized by connecting external voltage divider resistors R1 and R2 between the reference terminal, cathode and anode. The formula is Vout=(1+R1/R2)×2.5V. It is recommended to select resistors with precision of 1% or above and low temperature drift to ensure the stability of the adjusted voltage.
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+ —3. The maximum cathode current of the device can reach 100mA, can it directly drive high-power loads? >
- 100mA is the maximum shunt current of the cathode. The device is a shunt regulator, so it is not recommended to directly drive high-power loads. For high-power scenarios, power transistors need to be used to expand the output current, and the device itself undertakes the functions of voltage reference and feedback adjustment.
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+ —4. How to ensure the stable operation of the device under capacitive loads? Is there a limit on the capacitance? >
- The device has high stability under capacitive loads and can operate stably in the range of 1μF~100μF capacitive loads without additional buffer resistors, and can be directly adapted to most capacitive load scenarios.
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Packaging data
Packaging Type Minimum Order Quantity Quantity per Package Packaging Carrier Application Scenario Tape & Reel 3000pcs 3000pcs Standard industrial reel Mass production for automated lines Cut Tape 5pcs Custom-cut as needed Anti-static tape R&D prototyping/small-batch trial production Bulk 100pcs 100pcs Anti-static packaging bag Laboratory testing/sample verification -
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