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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 2% 8SOIC
- Series：-
- Mfr：Microsemi Corporation
- Package：Tube
- 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：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The TL431IDM is a precision programmable three-terminal shunt voltage regulator manufactured by Microsemi Corporation. It operates within an ambient temperature range of -40°C to +85°C and features an initial voltage reference accuracy of 2%. The device allows output voltage programming from 2.5V to 36V using two external resistors. It provides a sink current capability ranging from 1mA to 100mA with a typical equivalent full-range temperature coefficient of 30ppm/°C.
Feature Summary
- Offers low dynamic output impedance for improved load regulation
- Provides direct pin-to-pin replacement for industry standard TL431 and TL1431 devices
- Features low output noise characteristics
Applications
- Feedback path in switching power supplies
- Overvoltage protection (OVP) crowbar circuits
- Reference source for A/D and D/A converters
Procurement Notes
Verify component authenticity through authorized channels as the datasheet explicitly marks this series as obsolete and not recommended for new designs. Confirm that the specific lot matches the required operating temperature range and tolerance specifications before integration into critical systems.
Selection Notes
Select this component when a surface-mount solution compatible with standard SOIC-8 footprints is required. Ensure circuit design accommodates the specified cathode current limits and stability boundary conditions defined in the electrical characteristics section.
Part Context
This part belongs to the TL431/A/B series of precision adjustable references. It utilizes a plastic SOIC 8-pin package designated as DM. The device functions as a three-terminal shunt regulator, serving as a high-performance alternative to traditional Zener diodes with superior turn-on characteristics.
Replacement Considerations
TL431CDM
FAQ
What is the maximum cathode-to-anode voltage rating?
The absolute maximum rating for Cathode to Anode Voltage (VKA) is 37V.
How is the output voltage determined?
The output voltage is programmable from 2.5V to 36V using two external resistors connected to the Reference terminal.
