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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.4% TO92-3
- Series：-
- Mfr：Texas Instruments
- Package：Bulk
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：36 V
- Current - Output：100 mA
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA)
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The TL1431CLPE3 is a precision programmable shunt voltage reference manufactured by Texas Instruments. It operates within a cathode voltage range of 2.5 V to 36 V and supports a sink current capability from 1 mA to 100 mA. The device features an initial voltage tolerance of 0.4% and a typical output impedance of 0.2 Ω. It is characterized for commercial temperature operation between 0°C and 70°C. The component utilizes a TO-92 (TO-226AA) three-pin package.
Feature Summary
- Adjustable output voltage settable via two external resistors
- Specified thermal stability over the rated operating temperature range
- Active output circuitry providing fast turn-on characteristics
Applications
- Secondary side regulation in flyback switching power supplies
- Zener diode replacement in onboard regulation circuits
- Voltage monitoring systems with integrated reference
- Comparator applications requiring precise threshold levels
Procurement Notes
Verify the specific suffix 'CLPE3' against the manufacturer's latest orderable addendum to confirm the exact package type, tape-and-reel or bulk availability, and RoHS compliance status. Ensure the commercial temperature rating aligns with system requirements before procurement.
Selection Notes
Select this component when a low-cost, high-precision adjustable reference is required for commercial environments. Verify that the load capacitance remains within the stability boundary conditions defined in the datasheet to prevent oscillation during transient response.
Part Context
This part belongs to the TL1431 family of precision programmable references. While the base TL1431 design covers automotive and military grades, the 'C' designation specifically indicates the commercial temperature variant. The device functions as a shunt regulator, error amplifier, or comparator depending on the feedback configuration applied to the reference pin.
Replacement Considerations
TL1431LP
FAQ
Is the TL1431CLPE3 internally compensated?
Yes, the device is internally compensated to remain stable without an output capacitor between the cathode and anode pins.
What is the minimum cathode current required for regulation?
A minimum cathode current of 1 mA is required to ensure proper regulation and sufficient open-loop gain.
