KA431SLMFTF

Overview

The KA431SLMFTF is a programmable shunt regulator manufactured by onsemi, classified under voltage references and power management ICs. It features an adjustable output voltage range from 2.5V to 36V with an initial accuracy of 2% and a temperature coefficient of 50 PPM/C. The device supports a maximum series input voltage of 37V and operates within a shunt current range of 1mA to 100mA. It is housed in a SOT-23F package with cut tape or reel packaging options, designed for surface mount installation and operating temperatures between -25°C and +85°C.

Feature Summary

• Programmable shunt regulation capability with adjustable reference voltage
• High precision performance with 2% initial accuracy and low temperature drift
• Wide operational voltage range supporting up to 37V input
• Compact surface-mount SOT-23F package design

Applications

• Precision voltage reference circuits
• Linear and switching power supply feedback loops
• Battery charging control systems
• Over-voltage protection circuits

Procurement Notes

Verify the specific suffix LMF2TF against official datasheets to confirm pinout compatibility and thermal characteristics. Confirm RoHS compliance status through manufacturer documentation before integration. Ensure ordering quantities align with available cut tape or reel configurations. Validate that the selected variant meets the required operating temperature range for the target application environment.

Selection Notes

Select this component when a compact, high-accuracy programmable reference is needed for space-constrained designs. The SOT-23F package suits surface-mount assembly processes. Consider the 1mA minimum cathode current requirement for light-load stability. Evaluate the 50 PPM/C temperature coefficient against system thermal requirements. Compare against other KA431 variants if different packaging or lead-free specifications are necessary.

Part Context

This part belongs to the KA431 family of programmable shunt regulators produced by onsemi. These devices serve as versatile alternatives to Zener diodes, offering superior accuracy and temperature stability. The family includes various package options such as TO-92 and SOT-23 to accommodate different board space and mounting requirements across consumer and industrial electronics.

Replacement Considerations

Compatible substitutes include LM431 and TL431 variants. Verify pinout alignment and electrical parameter equivalence before substitution. Check for package compatibility, specifically SOT-23 footprint matching. Ensure replacement parts meet the same 2.5V to 36V adjustment range and current handling capabilities.