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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.5% SOT23
- Series：AZ431L
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：1.24V
- Voltage - Output (Max)：18 V
- Current - Output：100 mA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
- Grade：-
- Qualification：-
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Overview
The AZ431LANTR-E1 is a low-voltage adjustable precision shunt regulator from the AZ431L series by Diodes Incorporated. It features a reference voltage of 1.24V with an initial accuracy tolerance of ±0.5%. The output voltage is programmable between 1.24V and 18V using two external resistors. Key electrical parameters include a typical temperature coefficient of 20PPM/°C, a dynamic output resistance of 0.05Ω, and a sink current capacity ranging from 0.1mA to 100mA. The device operates within an ambient temperature range of -40°C to +125°C and is housed in a SOT-23 surface-mount package.
Feature Summary
- Provides sharp turn-on characteristics and high stability under capacitive loads for reliable regulation.
- Offers low temperature deviation and low equivalent full-range temperature coefficient for precise thermal performance.
- Features low dynamic output resistance and low output noise to enhance signal integrity.
- Complies with RoHS standards and utilizes lead-free 'Green' molding compounds.
Applications
- Switching power supplies
- PC motherboards
- Graphic cards
- Voltage adapters
- Chargers
Procurement Notes
Verify that the specific ordering suffix E1 corresponds to RoHS compliance rather than Green compound specifications, as the datasheet distinguishes between E1 and G1 suffixes. Confirm the component status is Not Recommended for New Design (NRND) and assess whether this impacts long-term supply chain viability or if the alternative G1 version should be selected instead.
Selection Notes
Select this component when a low-voltage reference near 1.24V is required with tight initial accuracy. Ensure the application circuit can maintain cathode currents between 0.1mA and 100mA for proper regulation. Consider the NRND status when designing new products; the AZ431LANTR-G1 serves as the recommended active alternative with identical electrical characteristics but different packaging compliance markings.
Part Context
This part belongs to the AZ431L series, which are designed as direct substitutes for Zener diodes in various electronic circuits. The series includes multiple package options such as TO92, SOT25, and SOT89, allowing flexibility in board layout and thermal management requirements across different consumer and industrial electronics designs.
Replacement Considerations
The AZ431LANTR-G1 is the designated replacement part number for the AZ431LANTR-E1. Both parts share identical electrical specifications and pinouts, differing primarily in the RoHS/Green compliance marking suffixes.
FAQ
What is the minimum cathode current required for regulation?
The minimum cathode current for regulation is typically 55µA and maximally 80µA at room temperature.
How does the device handle capacitive loads?
The AZ431L series features high stability under capacitive loads, making it suitable for applications requiring significant output capacitance without oscillation.
