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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1.5% SOT23-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：1.24V
- Voltage - Output (Max)：6 V
- Current - Output：15 mA
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
- Grade：-
- Qualification：-
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Overview
The TLV431IDBZRG4 is a low-voltage adjustable precision shunt regulator manufactured by Texas Instruments. It features an initial accuracy of 1.5% and operates within a temperature range of -40°C to +85°C. The device supports an output voltage adjustment from 1.24V to 18V with a maximum series VREF input voltage of 18V. It utilizes a SOT-23-3 surface-mount package and has a maximum cathode current of 70mA.
Feature Summary
- Provides adjustable precision reference voltage functionality in a compact surface-mount package
- Enables output voltage setting across a wide range using external resistors
- Offers high accuracy for stable voltage regulation in low-voltage applications
Applications
- Adjustable voltage and current references
- Secondary side regulation in flyback switch-mode power supplies
- Voltage monitoring circuits
- Comparator applications with integrated reference
Procurement Notes
Verify the specific suffix 'RG4' indicates RoHS compliance and tape-and-reel packaging configuration as per manufacturer documentation. Confirm the 1.5% accuracy grade matches design requirements. Ensure the SOT-23-3 footprint aligns with PCB layout specifications. Cross-reference the datasheet revision date to ensure compatibility with current manufacturing standards.
Selection Notes
Select this component when a low-voltage, high-accuracy shunt regulator is required for space-constrained designs. The 1.5% tolerance offers a balance between cost and precision compared to tighter grades. Consider the 70mA cathode current capability for load driving needs. Verify that the 18V maximum operating voltage suits the circuit's supply rails.
Part Context
This part belongs to the TLV431 family of low-voltage adjustable precision shunt regulators. It serves as a modern alternative to traditional Zener diodes and older TL431 variants, offering lower minimum operating voltages and improved performance in compact packages suitable for portable and industrial electronics.
Replacement Considerations
Direct substitutes include other TLV431 variants with similar accuracy and package types, such as TLV431AIDBZR or TLV431BIDBZR, provided their accuracy grades (1% or 0.5%) meet the application's tolerance requirements. Ensure pinout compatibility and thermal characteristics are matched.
