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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% SOT23F
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：20 V
- Current - Output：100 mA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SOT-23-3 Flat Leads
- Supplier Device Package：SOT-23F
- Grade：-
- Qualification：-
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Overview
The ZTL431AFFTA is a three-terminal adjustable precision shunt regulator manufactured by Diodes Incorporated. It provides an output voltage range from V_REF to 20V, set via two external divider resistors. The device features a reference voltage tolerance of 1% at +25°C and operates within an ambient temperature range of -40°C to +125°C. It offers excellent temperature stability and handles output currents up to 100mA. The unit utilizes the SOT23F package.
Feature Summary
- Adjustable output voltage programmable between V_REF and 20V using external resistors
- High initial accuracy with 1% reference voltage tolerance at +25°C
- Wide operating temperature range spanning -40°C to +125°C
- Capable of sink current handling up to 100mA
Applications
- Opto-coupler linearization
- Linear regulators
- Improved zener diode replacement
- Variable reference circuits
Procurement Notes
Verify the specific ordering code ZTL431AFFTA against the manufacturer's official documentation to confirm active status and packaging details. Ensure the selected component matches the required SOT23F package and 1% tolerance grade for your design specifications. Cross-reference datasheet revisions to validate electrical characteristics prior to final procurement.
Selection Notes
Select this component when a cost-effective adjustable shunt regulator is needed to replace standard zener diodes. It is suitable for applications requiring improved performance over basic zeners. Consider the 1% tolerance grade if higher precision than the standard 2% grade is necessary. Verify that the maximum cathode voltage rating of 20V aligns with the circuit requirements.
Part Context
This part belongs to the ZTL431/ZTL432 family of adjustable precision shunt regulators. The ZTL431 variant uses a standard pinout, while the ZTL432 has a different pin configuration in SOT23 and SOT23F packages. Both are functionally equivalent to TL431/TL432 devices, except for the maximum operation voltage limit.
Replacement Considerations
The ZTL431AFFTA serves as a direct functional replacement for TL431AFDT and similar adjustable shunt regulators. When substituting, verify that the maximum cathode voltage rating of 20V is sufficient for the application, as some legacy parts may support higher voltages.
