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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% SOT23-3
- 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-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
- Grade：-
- Qualification：-
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Overview
The AS431BNTR-G1 is a three-terminal adjustable precision shunt regulator manufactured by Diodes Incorporated. It operates within a cathode voltage range of 2.5V to 36V and features a 1.0% initial accuracy tolerance. The device provides a typical temperature deviation of 4.5mV and maintains a low equivalent full-range temperature coefficient of 20PPM/°C. It supports a sink current capacity from 1mA to 100mA with a minimum regulation current of 0.4mA. The component is housed in an SOT-23 surface-mount package and is designed for operation across a wide ambient temperature range of -40°C to +125°C.
Feature Summary
- Features sharp turn-on characteristics and high stability under capacitive loads, making it suitable as a Zener diode substitute.
- Offers low output noise and low dynamic impedance for precise voltage regulation applications.
- Compliant with RoHS standards and available in lead-free, halogen-free, and antimony-free green molding compounds.
Applications
- Switching power supplies
- Chargers
- Voltage adapters
- Graphic cards
- Precision voltage references
Procurement Notes
Verify the specific ordering suffix G1 confirms compliance with RoHS directives and green compound requirements. Confirm the B suffix indicates the 1.0% voltage tolerance variant rather than the A (0.5%) option. Ensure the TR designation matches the required tape and reel packaging quantity of 3000 units. Validate that the SOT-23 package aligns with the target PCB footprint and thermal management strategy.
Selection Notes
Select this component when a programmable reference voltage between 2.5V and 36V is required with 1.0% accuracy. Consider the SOT-23 package for space-constrained surface-mount designs. Evaluate the 20PPM/°C temperature coefficient against environmental operating conditions. Verify that the 100mA maximum sink current meets the load requirements of the intended circuit topology.
Part Context
This part belongs to the AS431 family of adjustable precision shunt regulators. The series includes variants with different packages such as TO92, SOT25, and SOT89, and offers both 0.5% and 1.0% tolerance options. The AS431BNTR-G1 specifically utilizes the SOT-23 package with tape and reel packaging for automated assembly processes.
Replacement Considerations
AS431BNTR-E1 is listed as a previous generation alternative but is marked as Not Recommended for New Design (NRND). Other family members like AS431ANTR-G1 offer tighter 0.5% tolerance but differ in accuracy specifications.
