TL431AMFDT,215

Overview

The TL431AMFDT,215 is an adjustable precision shunt voltage reference manufactured by Nexperia USA Inc. in the TO-236AB (SOT-23) surface-mount package. It provides a programmable output voltage ranging from 2.495 V to 36 V using two external resistors. The device features a typical initial accuracy of ±1% and supports a cathode current range from 600 µA to 100 mA. It operates within a temperature range of -40°C to 125°C and includes internal compensation for stability.

Feature Summary

• Adjustable output voltage via external resistor divider
• High initial accuracy with ±1% tolerance
• Internal frequency compensation for loop stability
• Low dynamic output impedance

Applications

• Switching power supply feedback control loops
• Precision voltage references
• Programmable linear regulators
• Constant current sources

Procurement Notes

Verify the specific suffix '215' corresponds to the reel packaging configuration required for automated assembly processes. Confirm that the ±1% accuracy grade meets the design requirements, as other grades like B or C offer different tolerances. Ensure the TO-236AB footprint matches the PCB layout specifications.

Selection Notes

Select this component when a compact SOT-23 solution is needed for high-precision applications requiring ±1% accuracy. Consider the operating temperature range up to 125°C for industrial environments. Evaluate the need for AEC-Q100 automotive qualification; if required, choose the AQ variant instead.

Part Context

This part belongs to the TL431 family of three-terminal shunt regulators. It serves as a low-cost alternative to Zener diodes, offering superior performance in terms of accuracy, temperature coefficient, and noise. The device is widely used in power management circuits where precise voltage regulation is critical.

Replacement Considerations

Compatible substitutes include the TL431BMFDT,215 for ±0.5% accuracy and the TL431CMFDT,215 for ±2% accuracy. For automotive-grade applications, the TL431AQDBZR,215 is a verified equivalent with AEC-Q100 certification.