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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.4% TO92-3
- Series：-
- Mfr：STMicroelectronics
- Package：Bulk
- 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 is an adjustable shunt voltage reference manufactured by STMicroelectronics, housed in a TO-92-3 through-hole package. It provides an output voltage range from 2.5 V to 36 V, set via two external resistors. The device features an initial accuracy of ±0.4% and a temperature coefficient of 100 ppm/°C. It operates with a cathode current range of 1 mA to 100 mA and exhibits a typical dynamic impedance of 0.2 Ω. The component supports an operating temperature range from -40°C to +105°C.
Feature Summary
- Adjustable output voltage capability between 2.5 V and 36 V using external resistors
- High precision with 0.4% initial accuracy and low temperature drift
- Wide sink current range supporting 1 mA to 100 mA operation
- Low dynamic impedance for stable shunt regulation
Applications
- Precision voltage references in power supply circuits
- Programmable linear regulators
- Battery-operated equipment requiring stable reference voltages
- Industrial control systems
Procurement Notes
Verify the specific suffix 'IZ' corresponds to the TO-92-3 through-hole package and ±0.4% accuracy grade when sourcing. Confirm RoHS compliance status as indicated in official documentation. Ensure the supplier provides valid datasheets matching the STMicroelectronics part number TL1431IZ to guarantee correct electrical parameters and thermal characteristics.
Selection Notes
Select the TL1431IZ when a through-hole adjustable shunt reference with high precision is required. Its wide input voltage range up to 36 V and robust current sinking capability make it suitable for various linear regulator topologies. Consider the TO-92-3 package constraints for PCB layout and thermal management compared to surface-mount alternatives.
Part Context
The TL1431 belongs to a family of programmable shunt voltage references designed for general-purpose applications. The TL1431IZ variant specifically denotes the through-hole TO-92-3 packaging with standard industrial temperature ratings. This component serves as a cost-effective solution for establishing precise reference points in analog and mixed-signal circuits.
Replacement Considerations
Public confirmed substitutes include TL1431AIZT, TL1431IZ-AP, and TL1431IZT from STMicroelectronics. Cross-manufacturer equivalents such as KA431AZBU or LM431AIZ may be considered but require verification of pinout compatibility and parameter alignment.
