TL431CDG4

Overview

The TL431CDG4 is a precision adjustable shunt voltage reference manufactured by Texas Instruments. It operates within an input voltage range of 2.50V to 36.0V and provides an adjustable output voltage from 2.495V to 36V. The device supports a maximum cathode current of 100 mA with an initial accuracy tolerance of ±2%. It functions in an operating temperature range of 0°C to 70°C and utilizes an 8-pin SOIC surface-mount package.

Feature Summary

• Provides precise programmable shunt regulation for stable voltage references
• Features low dynamic impedance for improved noise performance
• Offers wide operating voltage range suitable for various power supply topologies

Applications

• Precision voltage references in power supply circuits
• Programmable output regulators
• Battery-operated equipment requiring stable reference voltages

Procurement Notes

Verify the specific suffix G4 indicates lead-free and RoHS compliance status as per manufacturer documentation. Confirm the SOIC-8 package dimensions match your PCB footprint requirements. Ensure the ±2% initial accuracy meets your circuit design tolerances before finalizing procurement decisions.

Selection Notes

Select this component when a standard adjustable shunt regulator is required for general-purpose applications. Consider the ±2% tolerance if higher precision is not critical. Verify that the 100 mA current capability aligns with the load requirements of the target circuit design.

Part Context

This part belongs to the TL431 series of programmable shunt regulators, widely used as a versatile voltage reference element. It serves as a cost-effective alternative to fixed voltage references in feedback loops and control circuits.

Replacement Considerations

Direct pin-compatible substitutes include the TL431CD and TL431CDRG4 from Texas Instruments. Other manufacturers may offer equivalent functional parts, but electrical characteristics should be compared carefully.