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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：-20°C ~ 70°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 TL1431CZ is an adjustable shunt voltage reference manufactured by STMicroelectronics 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 guarantees a voltage tolerance of ±0.4% and operates with a cathode current range of 1 mA to 100 mA. It features a typical dynamic impedance of 0.2 Ω and a temperature coefficient of 90 ppm/°C. The component functions within an ambient temperature range of -20°C to +70°C.
Feature Summary
- Adjustable output voltage capability between 2.5 V and 36 V using external resistors
- High precision with guaranteed ±0.4% initial accuracy
- Wide operating current range supporting sink currents from 1 mA to 100 mA
Applications
- Precision power supply regulation
- Voltage reference for analog-to-digital converters
- Battery-operated equipment monitoring
Procurement Notes
Verify the specific suffix 'CZ' to confirm the TO-92-3 through-hole package and ±0.4% tolerance grade. Confirm RoHS compliance status as per the latest datasheet revision. Check for end-of-life or obsolescence notices, as availability may be limited compared to tape-and-reel variants like the TL1431CZT.
Selection Notes
Select this component when a low-cost, through-hole adjustable reference is required for general-purpose applications. Ensure the thermal environment stays within the -20°C to +70°C limit; otherwise, consider automotive-grade variants. Verify that the 100 mA sink current meets the load requirements and that the TO-92-3 footprint fits the PCB layout constraints.
Part Context
The TL1431CZ belongs to the broader TL1431 family of programmable shunt voltage references. This series includes various packages such as SOIC (TL1431IDT) and SOT-323 (TL1431ACCT), offering different pin counts and mounting styles. The family shares core functionality but varies in precision grades, temperature ranges, and physical form factors to suit diverse design needs.
Replacement Considerations
The TL1431CZT serves as a direct substitute, offering identical electrical characteristics in a tape-and-reel format suitable for automated assembly. Other equivalents include the TL1431ACZ for similar performance in bulk packaging.
