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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% SOT23
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：1.24V
- Voltage - Output (Max)：10 V
- Current - Output：15 mA
- Operating Temperature：-40°C ~ 125°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 ZTLV431AFTA is a three-terminal adjustable shunt regulator manufactured by Diodes Incorporated (formerly Zetex). It provides an output voltage range of 1.24V to 10V, set via external resistors. The device features a reference voltage tolerance of 1% at 25°C and operates within a temperature range of -40°C to 125°C. Key electrical parameters include a typical dynamic output impedance of 0.25Ω and a minimum cathode current for regulation of 100µA. It is housed in a surface-mount SOT-23 package.
Feature Summary
- Adjustable output voltage capability between 1.24V and 10V using two external divider resistors
- High initial accuracy with a 1% reference voltage tolerance at 25°C
- Low dynamic output impedance for stable regulation performance
- Wide operating temperature range suitable for industrial environments
Applications
- Opto-coupler linearization circuits
- Linear regulators
- Variable reference sources
- Replacement for Zener diodes requiring improved performance
Procurement Notes
Verify the manufacturer origin as Zetex Semiconductors or Diodes Incorporated when sourcing. Confirm the specific 'A' grade designation ensures the required 1% initial tolerance. Ensure the SOT-23 package type matches the PCB footprint requirements. Check that the reel size and quantity per reel align with assembly line specifications.
Selection Notes
Select this component when a cost-effective shunt regulator with high precision is needed. The 1% tolerance makes it suitable for applications demanding strict voltage accuracy. Consider the low minimum cathode current requirement for power-sensitive designs. Verify that the 10V maximum cathode voltage meets the circuit's operational limits.
Part Context
This part belongs to the TLV431 series of adjustable shunt regulators. It serves as a direct replacement for standard Zener diodes where better stability and lower impedance are required. The device is widely used in power supply feedback loops and reference voltage generation across various electronic systems.
Replacement Considerations
Direct replacements include other A-grade TLV431 variants in SOT-23 packages from compatible manufacturers. Ensure substitute parts maintain the 1.24V reference voltage and 1% tolerance specification. Verify pinout compatibility to avoid circuit redesign during implementation.
