TL431CDBVRG4

Overview

The TL431CDBVRG4 is an adjustable precision shunt regulator from Texas Instruments, housed in a SOT-23-5 package. It provides an adjustable output voltage ranging from 2.495 V to 36 V with an initial accuracy of ±2.2%. The device supports a maximum cathode current of 100 mA and operates within a temperature range of 0°C to 70°C. It features a low dynamic impedance of 0.22 Ω and a typical temperature coefficient of 50 ppm/°C. The component is RoHS compliant and designed for surface-mount applications.

Feature Summary

• Adjustable output voltage capability spanning from 2.495 V up to 36 V
• High initial accuracy specification of ±2.2% across the operating temperature range
• Low dynamic impedance of 0.22 Ω ensuring stable regulation performance
• Compact SOT-23-5 surface-mount package design for space-constrained layouts

Applications

• Precision voltage references in power supply circuits
• Programmable linear regulators and feedback control loops
• Battery management systems requiring accurate voltage monitoring
• Industrial process control instrumentation

Procurement Notes

Verify the complete part number including the G4 suffix to ensure compliance with specific environmental standards and manufacturing revisions. Confirm that the SOT-23-5 package variant matches the required PCB footprint. Check datasheet specifications for thermal derating requirements under high load conditions. Ensure compatibility with assembly processes regarding moisture sensitivity levels.

Selection Notes

Select this component when a precise, adjustable reference voltage is needed in a compact form factor. The ±2.2% accuracy suits general-purpose applications where tighter tolerances are not critical. Consider the 100 mA current limit for load requirements. Evaluate the 0°C to 70°C operating range against environmental constraints. Compare against higher accuracy variants if stricter tolerance is required.

Part Context

This device belongs to the TL431 family of adjustable shunt regulators, widely used as voltage references and error amplifiers. The TL431 series offers a cost-effective solution for regulating voltages in switching and linear power supplies. The DBV suffix indicates the SOT-23-5 package, while G4 denotes lead-free and RoHS-compliant construction. It serves as a standard component for feedback network implementation.

Replacement Considerations

Direct pin-to-pin replacements include the TL431CDBVR and TL431CDBVRE4. Verify that substitute parts maintain the same ±2.2% initial accuracy and 100 mA current rating. Ensure the replacement component supports the same SOT-23-5 package and operating temperature range. Cross-reference datasheets for any differences in dynamic impedance or temperature coefficients.