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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% TO92-3
- Series：-
- Mfr：Texas Instruments
- Package：Cut Tape (CT),Tape & Box (TB)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.495V
- 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) Formed Leads
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The TL431ACLPME3 is a precision programmable shunt regulator manufactured by Texas Instruments. It operates within an input voltage range of 2.5V to 36V and provides an adjustable output voltage from 2.495V to 36V. The device features an initial accuracy of ±1.0% and a maximum temperature coefficient of 92ppm/°C. It supports a maximum cathode current of 100mA and functions with a minimum operating current of 1mA. Packaged in a TO-92-3 through-hole configuration, it operates between -40°C and +125°C.
Feature Summary
- Precision adjustable reference with sharp turn-on characteristics
- Internal 2.5V reference for stable regulation
- Wide operating voltage range up to 36V
- Thermal stability across extended industrial temperatures
Applications
- Power supply feedback loops
- Comparator circuits
- Linear regulator references
- Battery chargers
Procurement Notes
Verify the specific suffix 'ME3' against official Texas Instruments documentation to confirm RoHS compliance status and lead-free manufacturing details. Ensure the TO-92-3 package variant matches the required PCB footprint. Confirm that the ±1.0% accuracy grade meets the design specifications for the intended application environment.
Selection Notes
Select this component when a low-cost, high-accuracy voltage reference is required for shunt regulation applications. The TO-92 package suits through-hole designs where space constraints are less critical than surface-mount alternatives. Consider the 100mA current capability for driving load requirements without external amplification.
Part Context
The TL431 series serves as a widely adopted standard for precision voltage referencing in power management circuits. Originally released in 1978, it replaced earlier Zener diodes by offering superior stability and sharper turn-on characteristics. The TL431ACLPME3 represents the automotive-grade or enhanced reliability variant within the broader TL431 family, maintaining compatibility with standard control topologies.
Replacement Considerations
Compatible substitutes include the TL431ACLPR and TL431AILP from Texas Instruments, provided the package type and accuracy grades align with the design requirements. Other manufacturers offer pin-compatible equivalents such as the REF30xx series, though electrical parameters may differ.
