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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% SOT23-3
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：1.24V
- Voltage - Output (Max)：16 V
- Current - Output：20 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 (TO-236)
- Grade：-
- Qualification：-
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Overview
The TLV431ASN1T1G is a precision low voltage adjustable shunt regulator from onsemi, belonging to the A series. It features a programmable output voltage range of 1.24 V to 16 V and a guaranteed reference accuracy of ±1.0% at 25 °C. The device exhibits a sharp low current turn-on characteristic with a low dynamic output impedance of 0.25 Ω over an operating current range of 0.1 mA to 20 mA. It is housed in a micro miniature SOT-23-3 package (SN1 suffix) and is lead-free and halide-free.
Feature Summary
- Programmable output voltage range spanning 1.24 V to 16 V via external resistors
- Guaranteed reference accuracy of ±1.0% at 25 °C for the A series
- Sharp low current turn-on characteristic suitable for precise regulation
- Low dynamic output impedance ensuring stable performance across operating currents
Applications
- Low output voltage switching power supply error amplifier
- Adjustable voltage or current linear and switching power supplies
- Voltage monitoring circuits
- Current source and sink applications
- Analog and digital circuits requiring precision references
Procurement Notes
Verify the specific ordering suffix SN1T1G corresponds to the SOT-23-3 package and tape & reel shipping configuration. Confirm that the 'A' designation aligns with the required ±1.0% reference accuracy tolerance. Ensure the component meets Pb-Free and Halide-Free requirements if mandated by the design specifications.
Selection Notes
Select this component when a precision shunt regulator is needed with ±1.0% initial accuracy. The SOT-23-3 package offers space-saving benefits for compact designs. Consider the wide operating current range and low dynamic impedance for applications demanding stable regulation under varying load conditions.
Part Context
This device is part of the TLV431 family, which includes B and C series variants offering tighter tolerances. The TLV431A specifically targets general-purpose applications where ±1.0% accuracy is sufficient. It serves as a direct replacement for Zener diodes in circuits requiring a more precise reference voltage.
Replacement Considerations
SCV431ASN1T1G: Automotive qualified version with unique site and control change requirements; AEC-Q100 qualified and PPAP capable.
FAQ
What is the minimum cathode current required for regulation?
The minimum cathode current for regulation is typically 30 µA, with a maximum specified limit of 80 µA.
Is the TLV431ASN1T1G suitable for automotive applications?
No, the standard TLV431 prefix is not automotive qualified. For automotive applications requiring AEC-Q100 qualification and PPAP capability, the SCV431 prefix should be selected.
