ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
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：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-243AA
- Supplier Device Package：SOT-89-3
- Grade：-
- Qualification：-
Download product information
Overview
The TL431CPK is a precision programmable shunt regulator manufactured by Texas Instruments. It operates as a three-terminal device with an adjustable output voltage range spanning from the reference voltage of approximately 2.5 V up to 36 V, configured via two external resistors. The component features a typical output impedance of 0.2 Ω and supports cathode currents between 1 mA and 100 mA. It is housed in a SOT-89-3 surface-mount package and maintains specified thermal stability across automotive, commercial, and military temperature ranges.
Feature Summary
- Provides precise voltage regulation suitable for replacing Zener diodes in board-level regulation and power supply applications
- Offers low output noise and high thermal stability across wide operating temperature conditions
- Features active output circuitry with defined turn-on characteristics for reliable switching performance
Applications
- Board-level voltage regulation circuits
- Adjustable linear and switching power supplies
- Portable equipment requiring compact voltage references
Procurement Notes
Verify the specific suffix 'CPK' against the manufacturer's current datasheet to confirm pinout compatibility and tolerance grade. Ensure the sourcing channel provides original documentation to validate RoHS compliance and authenticity. Cross-reference the package marking codes with official TI guidelines to prevent counterfeit components during acquisition.
Selection Notes
Select this component when a compact SOT-89-3 form factor is required for space-constrained designs. Choose based on the need for a 2.5 V to 36 V adjustable range with standard precision tolerances. Consider the thermal management requirements associated with the SOT-89-3 package for the intended power dissipation levels.
Part Context
This part belongs to the TL431 family of programmable shunt regulators. It serves as a direct replacement for fixed Zener diodes in feedback loops and reference circuits. The device integrates a bandgap reference and error amplifier to maintain stable output voltages under varying load and line conditions.
Replacement Considerations
Compatible substitutes include the TL431AIPK and TL431BIPK from Texas Instruments, which share the same SOT-89-3 package and functional specifications while offering different accuracy grades.
