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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.5% TO92-3
- Series：-
- Mfr：onsemi
- Package：Tape & Box (TB)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.495V
- Voltage - Output (Max)：36 V
- Current - Output：100 mA
- Operating Temperature：-25°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 FAN431LZXA is a three-terminal programmable shunt regulator manufactured by onsemi. It features an adjustable output voltage range from approximately 2.5V to 36V, set via two external resistors. The device provides a sink current capability of 1.0mA to 100mA and exhibits a typical dynamic output impedance of 0.2Ω. It operates within a temperature range of -25°C to +85°C with a typical full-range temperature coefficient of 50ppm/°C.
Feature Summary
- Programmable output voltage adjustable between V_REF and 36 volts using external resistors
- Active output circuitry delivers sharp turn-on characteristics for Zener diode replacement
- Temperature compensated operation ensures stability across the full rated operating range
Applications
- Replacement for Zener diodes in precision reference applications
- Adjustable voltage regulation circuits requiring low dynamic output impedance
- Power supply feedback networks utilizing programmable shunt regulation
Procurement Notes
Verify component authenticity through authorized distribution channels. Confirm package integrity matches TO-92 specifications. Ensure environmental compliance aligns with project requirements. Validate datasheet revision against manufacturing batch documentation. Inspect terminals for physical defects prior to integration.
Selection Notes
Select this component when precise voltage referencing is required over wide temperature variations. Consider the 1.0mA to 100mA sink current range for load matching. Evaluate the 0.2Ω dynamic impedance for noise-sensitive designs. Verify resistor tolerance impacts overall accuracy given the 50ppm/°C coefficient.
Part Context
This device belongs to the FAN431 series of programmable shunt regulators. It serves as a direct functional alternative to fixed Zener diodes, offering superior thermal stability and adjustable output capabilities. The series maintains consistent electrical performance standards across its variants for reliable industrial and commercial deployment.
Replacement Considerations
Direct substitutes include FAN431 and FAN431A variants within the same family. Verify pinout compatibility and thermal characteristics when cross-referencing. Ensure equivalent sink current capabilities match the original design constraints.
