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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.8% SOT89-3
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：36 V
- Current - Output：100 mA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-243AA
- Supplier Device Package：SOT-89-3
- Grade：-
- Qualification：-
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Overview
The AZ431BR-ATRE1 is a three-terminal adjustable precision shunt regulator manufactured by Diodes Incorporated. It provides an output voltage programmable from 2.5V to 36V with a voltage tolerance of 0.8%. The device operates within a cathode current range of 1mA to 100mA and features a typical temperature coefficient of 20PPM/°C. It is housed in a SOT-23 package and supports an operating ambient temperature range from -40°C to +125°C.
Feature Summary
- Programmable precise output voltage ranging from 2.5V to 36V
- Guaranteed thermal stability over the full operation range
- Sharp turn-on characteristics with low output impedance
- Low equivalent full-range temperature coefficient
Applications
- Charger circuits
- Voltage adapters
- Switching power supplies
- Graphic cards
- Precision voltage references
Procurement Notes
Verify that the component matches the specific 0.8% voltage tolerance designation indicated by the 'B' suffix, as opposed to the 0.4% variant. Confirm the SOT-23 surface-mount package type aligns with board layout requirements. Ensure compliance with RoHS directives if environmental standards are mandatory for the assembly process.
Selection Notes
Select this part when a standard Zener diode replacement requires higher accuracy and lower dynamic impedance. The 0.8% tolerance suits applications where tighter 0.4% specifications are unnecessary. Verify that the maximum cathode voltage rating of 36V accommodates the circuit's peak operating conditions without exceeding limits.
Part Context
This component belongs to the AZ431-A series of adjustable precision shunt regulators. It serves as a direct functional substitute for traditional Zener diodes in linear regulation and reference applications. The series includes variants with different voltage tolerances and packaging options to support diverse design constraints.
Replacement Considerations
Public confirmed substitutes include AZ431AN-ATRG1 (0.4% tolerance) and AZ431BN-ATRG1 (0.8% tolerance). These alternatives share identical electrical characteristics but differ in voltage accuracy or manufacturing lot specifications.
FAQ
What is the minimum cathode current required for regulation?
The minimum cathode current for regulation is typically 1.0 mA.
Does the device offer a shutdown function?
No, the AZ431BR-ATRE1 does not feature a shutdown pin or function.
