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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.4% TO92-3
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.495V
- Voltage - Output (Max)：36 V
- Current - Output：100 mA
- Operating Temperature：-40°C ~ 85°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 TL431BILPRA is a three-terminal programmable shunt regulator diode from onsemi, part of the TL431 series. It operates as a low temperature coefficient Zener reference, programmable from Vref to 36 V using two external resistors. The device features a typical voltage reference tolerance of ±0.4% at 25°C and a dynamic output impedance of 0.22 Ω. It supports a sink current range of 1.0 mA to 100 mA with a typical full-range temperature coefficient of 50 ppm/°C. Packaged in TO-92 (TO-226) LP suffix format, it is designed for precision applications requiring stable voltage references.
Feature Summary
- Programmable output voltage adjustable from Vref to 36 V via external resistors
- High precision with ±0.4% voltage reference tolerance at 25°C
- Low dynamic output impedance for stable regulation performance
- Temperature compensated operation across the full rated operating range
Applications
- Digital voltmeters
- Power supplies
- Op amp circuitry
- Feedback control for driving optocouplers
- Voltage monitors
Procurement Notes
Verify the specific ordering suffix ILPRA corresponds to the required TO-92 tape and reel packaging configuration. Confirm that the B tolerance grade meets the design requirements for voltage reference accuracy. Ensure the operating ambient temperature range aligns with the specified industrial limits for the selected package variant.
Selection Notes
Select this component when a precise, adjustable shunt regulator is needed to replace standard Zener diodes. The B grade offers tighter tolerance than the A or I grades. Consider the thermal resistance characteristics if high power dissipation is expected. Verify stability boundary conditions regarding load capacitance and cathode current for the specific application circuit.
Part Context
This device belongs to the TL431, A, B Series programmable precision references manufactured by onsemi. It utilizes monolithic IC technology to provide a stable reference voltage. The LP suffix indicates the TO-92 plastic package style. The product line includes variants with different tolerances and temperature ranges to suit various industrial and commercial needs.
Replacement Considerations
TL431BCLPRAG
FAQ
How is the output voltage programmed?
The output voltage is programmable from Vref to 36 V using two external resistors connected between the cathode, reference, and anode pins.
What is the typical dynamic output impedance?
The typical dynamic output impedance is 0.22 Ω, measured with a cathode current change from 1.0 mA to 100 mA.
