ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.5% TO92
- Series：-
- Mfr：Diodes Incorporated
- Package：Cut Tape (CT),Tape & Box (TB)
- 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：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Supplier Device Package：TO-92
- Grade：-
- Qualification：-
Download product information
Overview
The AS431IAZTR-G1 is a low cathode current adjustable precision shunt regulator manufactured by Diodes Incorporated. It operates within a voltage range of 2.5V to 36V and features an initial voltage tolerance of 0.5%. The device supports a sink current capacity from 50µA to 100mA with a typical minimum cathode current for regulation of 10µA. It utilizes a TO-92 package and functions across an operating temperature range of -40°C to +125°C.
Feature Summary
- Provides programmable precise output voltage between 2.5V and 36V using external resistors
- Features low minimum cathode current for regulation, enabling operation in very low power dissipation applications
- Ensures high stability under capacitive load conditions
- Delivers low temperature deviation and low output noise characteristics
Applications
- Charger circuits
- Voltage adapter designs
- Switching power supplies
- Graphic card power management
- Precision voltage reference systems
Procurement Notes
Verify the component matches the AS431I datasheet specifications, specifically the 0.5% voltage tolerance indicated by the 'A' suffix and the TO-92 package denoted by 'Z'. Confirm the G1 suffix indicates RoHS compliance and green manufacturing status. Ensure the TR designation aligns with tape and reel packaging requirements for automated assembly processes.
Selection Notes
Select this component when low cathode current regulation is required compared to standard shunt regulators. The 0.5% tolerance grade suits applications demanding higher initial accuracy than the 1.0% variant. Consider the TO-92 package for through-hole mounting needs where thermal resistance and physical footprint are compatible with the design constraints.
Part Context
This part belongs to the AS431 series of three-terminal adjustable shunt regulators. It serves as a substitute for Zener diodes in various power management roles. The manufacturer notes that this specific model is not recommended for new designs and suggests utilizing the AP431S series instead for future projects.
Replacement Considerations
Public confirmed substitute part numbers include AS431IBZTR-G1 (1.0% tolerance) and AS431IANTR-G1 (SOT-23 package). Designers should transition to the AP431S series for new implementations as explicitly stated in the documentation.
FAQ
What is the minimum cathode current required for regulation?
The typical minimum cathode current for regulation is 10µA, with a maximum specified value of 50µA.
How does the AS431I differ from standard 431 regulators?
The AS431I features a significantly lower minimum cathode current for regulation, making it ideal for very low power dissipation applications compared to industry standard versions.
