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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 2.2% SOT89-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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：Surface Mount
- Package / Case：TO-243AA
- Supplier Device Package：SOT-89-3
- Grade：-
- Qualification：-
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Overview
The TL432IPK is a three-terminal adjustable shunt regulator manufactured by Texas Instruments, housed in an SOT-89-3 surface-mount package. It functions as a precision voltage reference with an adjustable output range from 2.495V to 36V. The device features a typical dynamic impedance of 0.2 ohms and supports cathode currents between 1 mA and 100 mA. It offers a standard initial accuracy of 2% at 25°C and operates within a temperature range of -40°C to +125°C.
Feature Summary
- Adjustable output voltage capability spanning from the internal reference level up to 36V via external resistors
- Low output impedance ensuring stable regulation performance across operating conditions
- High thermal stability suitable for automotive, commercial, and military temperature environments
Applications
- Board-level voltage regulation circuits
- Adjustable power supply designs
- Switching power supply feedback loops
- Replacement for Zener diodes in precision applications
Procurement Notes
Verify the specific suffix 'PK' corresponds to the SOT-89-3 package configuration required for your design. Confirm that the standard 2% accuracy grade meets your system's tolerance requirements, as higher precision variants exist within the family. Ensure compatibility with your manufacturing process for surface-mount assembly.
Selection Notes
Select this component when a compact SOT-89-3 footprint is preferred over the pin-compatible TL431. Note that while electrically similar to the TL431, the pinout arrangement differs in certain packages. Choose this part if the specified -40°C to +125°C industrial/military temperature range is necessary for your application environment.
Part Context
The TL432 series belongs to Texas Instruments' portfolio of programmable shunt regulators. It shares core electrical characteristics with the widely used TL431 but distinguishes itself through specific pin configurations in packages like SOT-89. This variant is designed for applications requiring precise voltage referencing in space-constrained surface-mount layouts.
Replacement Considerations
The TL431IPK is a functional equivalent but requires verification of pinout compatibility due to potential differences in lead arrangements for the same package type. Other TI variants such as TL432AIPK offer tighter accuracy tolerances.
