FAN4050CIS333X

Overview

The FAN4050CIS333X is a precision micropower shunt voltage reference manufactured by Fairchild Semiconductor. It provides a stable output voltage of 3.3V with an initial accuracy of ±0.2%. The device operates within a supply voltage range of 2.5V to 36V and draws a typical quiescent current of 10µA. It features a low temperature coefficient of 50ppm/°C over the industrial temperature range of -40°C to +85°C. The component is housed in a compact SC-70 surface-mount package, designed for applications requiring high stability and low power consumption.

Feature Summary

• Provides precise 3.3V reference output with ±0.2% initial accuracy
• Operates efficiently with micropower consumption of 10µA typical quiescent current
• Maintains stability across wide supply voltages from 2.5V to 36V
• Features low temperature drift of 50ppm/°C for reliable performance

Applications

• Portable battery-powered equipment requiring precise voltage monitoring
• Handheld instruments needing stable reference sources
• Data acquisition systems utilizing analog-to-digital converters
• Series/parallel DAC references for signal conditioning

Procurement Notes

Verify the specific suffix 'X' indicates tape-and-reel packaging configuration when sourcing. Confirm the manufacturer origin as Fairchild Semiconductor or its successor entity ON Semiconductor, noting that corporate acquisitions may affect part marking and documentation availability. Ensure the SC-70 package dimensions match your PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component when a fixed 3.3V reference is required with minimal current draw. The ±0.2% accuracy suits applications demanding tight tolerance without active trimming. Consider the SC-70 package for space-constrained designs. Verify that the operating voltage range of 2.5V to 36V aligns with your system's supply rails and that the temperature coefficient meets your environmental specifications.

Part Context

This device belongs to the LM4050 series of micropower shunt voltage references. It serves as a cost-effective alternative to more complex regulator circuits by providing a simple two-terminal reference solution. The series is characterized by high precision and low power, making it suitable for various industrial and consumer electronics applications where voltage stability is critical.

Replacement Considerations

Equivalent parts include the LM4050BEX3-3.3 from Maxim Integrated (now Analog Devices). Verify pinout compatibility and electrical parameters such as initial accuracy and temperature coefficient before substitution. Ensure the replacement supports the same SC-70 package and operating voltage range.