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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.4% TO92-3
- Series：-
- Mfr：STMicroelectronics
- 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 ~ 105°C (TA)
- Mounting Type：Through Hole
- Package / Case：TO-226-2, TO-92-2 (TO-226AC)
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The TL1431IZ-AP is an adjustable shunt voltage reference manufactured by STMicroelectronics. It provides a programmable output voltage ranging from 2.5 V to 36 V, set via two external resistors. The device features a typical dynamic impedance of 0.2 Ω and operates with a sink current capability between 1 mA and 100 mA. It offers initial accuracy options of ±0.4% or ±1%, with a temperature coefficient of approximately 90 to 100 ppm/°C. The component supports through-hole mounting in a TO-92-3 package and functions within a standard industrial temperature range.
Feature Summary
- Adjustable output voltage setting using external resistors
- High precision stability across operating temperatures
- Wide cathode current operating range for flexible design
Applications
- Precision power supply regulation
- Programmable Zener diode replacement
- Voltage monitoring circuits
Procurement Notes
Verify the specific suffix configuration when ordering, as it determines the tolerance grade and packaging format. Confirm that the TO-92-3 through-hole package aligns with the target PCB layout requirements. Ensure the selected variant meets the necessary thermal and electrical specifications for the intended application environment before finalizing procurement.
Selection Notes
Select this component when a low-cost, high-precision shunt reference is required for linear regulation or feedback loops. The TO-92-3 package is suitable for prototyping and applications where surface area is not constrained. Consider the ±1% or ±0.4% accuracy grades based on the circuit's sensitivity requirements and budget constraints.
Part Context
This part belongs to the TL1431 family of programmable voltage references. It serves as a direct functional equivalent to industry-standard parts like the TL431, offering similar pinouts and electrical characteristics. The series is widely used in general-purpose electronics for stable voltage generation and error amplification in switching power supplies.
Replacement Considerations
Direct substitutes include the TL431AIZ-AP and other variants within the same STMicroelectronics family. Cross-manufacturer equivalents such as the LM431AIZ are also available. Verify pin compatibility and thermal performance when substituting.
