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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% TO92-3
- Series：-
- Mfr：onsemi
- Package：Bulk
- 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：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The TLV431ALPRE is a low voltage precision adjustable shunt regulator manufactured by onsemi. It features a programmable output voltage range from 1.24 V to 16 V and offers a guaranteed reference accuracy of ±1.0% at 25 °C. The device exhibits a sharp low current turn-on characteristic with a dynamic impedance of 0.20 Ω over an operating current range of 100 µA to 20 mA. It operates within a wide cathode current range of 50 µA to 20 mA and is available in the TO-92-3 package.
Feature Summary
- Programmable output voltage range spanning 1.24 V to 16 V
- Guaranteed reference accuracy of ±1.0% at 25 °C
- Sharp low current turn-on characteristic
- Low dynamic output impedance of 0.20 Ω
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 circuits
- Analog and digital circuits requiring precision references
Procurement Notes
Verify the specific ordering suffix 'E' against official documentation to confirm tape and reel packaging specifications, as variations exist within the product family. Ensure compatibility with lead-free manufacturing processes if required by the application. Confirm that the TO-92-3 package dimensions align with the target PCB layout constraints before finalizing procurement decisions.
Selection Notes
Select this component when a precise low-voltage reference is needed for shunt regulation applications. The ±1.0% tolerance suits general-purpose industrial environments. Consider the thermal resistance characteristics for heat dissipation requirements. Evaluate stability boundaries regarding load capacitance and equivalent series resistance to ensure reliable operation across the specified temperature range.
Part Context
This part belongs to the TLV431A/B series of low voltage precision adjustable shunt regulators. It serves as a direct replacement for Zener diodes in numerous circuit designs requiring higher precision. The series includes variants like TLV431B with tighter tolerances and different package options such as TSOP-5 and SOT-23-3.
Replacement Considerations
TLV431BLPRE
FAQ
What is the minimum cathode current required for regulation?
The minimum cathode current for regulation is typically 55 µA.
How does the TLV431A compare to standard Zener diodes?
It provides a sharper turn-on characteristic and lower dynamic impedance, making it a superior replacement for Zener diodes in precision reference applications.
