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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 2% TO92-3
- Series：-
- Mfr：Microchip Technology
- Package：Strip
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：36 V
- Current - Output：100 mA
- Operating Temperature：-40°C ~ 85°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 TL431ILP is a precision programmable three-terminal shunt voltage regulator manufactured by Microsemi. It features an adjustable output voltage range from 2.5V to 36V, set via two external resistors. The device offers an initial voltage reference accuracy of 2% and operates within an ambient temperature range of -40°C to 85°C. Key electrical characteristics include a typical dynamic impedance of less than 200mΩ and a sink current capability ranging from 1mA to 100mA.
Feature Summary
- Provides low output impedance for improved load regulation
- Features low output noise performance
- Offers direct pin-to-pin replacement compatibility with industry standard TL431 devices
Applications
- Feedback path in switching power supplies
- Overvoltage protection (OVP) crowbar circuits
- Reference source for A/D and D/A converters
- Zener diode replacement with improved turn-on characteristics
Procurement Notes
Verify the manufacturer designation as Microsemi on official documentation, as this component is frequently associated with Texas Instruments or STMicroelectronics. Confirm that the specific ordering suffix matches the required tolerance and temperature grade. Note that the datasheet identifies this series as obsolete and not recommended for new designs; ensure availability aligns with long-term supply requirements.
Selection Notes
Select the TL431ILP when a 2% initial voltage reference accuracy is sufficient for the application. Ensure the operating environment falls within the specified -40°C to 85°C range. Verify that the cathode current requirements remain between 1mA and 100mA. Consider thermal resistance guidelines for the TO-92 package if high dissipation is expected.
Part Context
This component belongs to the TL431/TL431A/TL431B series of precision programmable references produced by Microsemi's Integrated Products Division. The ILP variant specifically denotes the 2% tolerance version housed in a Plastic TO-92 3-Pin package. This series is designed to be pin-compatible with legacy industry standards while offering defined thermal stability.
Replacement Considerations
The datasheet specifies direct pin-to-pin replacement for the industry standard TL431 and TL1431. Verify that substitute components match the 2% initial accuracy and the -40°C to 85°C operating temperature range.
