TL431CDR-J

Overview

The TL431CDR-J is an adjustable shunt voltage reference IC manufactured by Texas Instruments, housed in an SOIC-8 surface-mount package. It operates within a cathode voltage range of 2.5 V to 36 V and supports a maximum cathode current of 100 mA. The device features an initial accuracy of ±2.2% and a temperature coefficient of 92 ppm/°C. It functions across a commercial operating temperature range of 0°C to +70°C. The component is RoHS compliant and utilizes standard SOIC-8 packaging for integration into power management circuits.

Feature Summary

• Provides precise adjustable shunt regulation with high thermal stability
• Supports wide input voltage range up to 36 V for flexible circuit design
• Delivers stable reference performance across specified commercial temperature ranges

Applications

• Precision voltage references in power supply circuits
• Programmable output regulators
• Error amplifiers in feedback control loops

Procurement Notes

Verify the specific suffix 'J' indicates the commercial temperature grade (0°C to +70°C) rather than extended industrial grades. Confirm the SOIC-8 package dimensions match the target PCB footprint. Ensure the order quantity aligns with the manufacturer's standard reel or cut-tape specifications. Cross-reference the datasheet revision history for any recent manufacturing changes.

Selection Notes

Select this component when a low-cost, adjustable shunt regulator is required for commercial-grade applications. The ±2.2% initial accuracy suits general-purpose regulation tasks. Consider the 100 mA sink capability for load requirements. Verify that the 92 ppm/°C temperature coefficient meets the system's precision needs compared to higher-accuracy alternatives.

Part Context

This part belongs to the TL431 family of programmable shunt regulators from Texas Instruments. It serves as a versatile reference element in analog and mixed-signal designs. The device replaces fixed voltage references by allowing external resistor networks to set the output voltage. It is widely used in consumer electronics and industrial control systems requiring reliable voltage regulation.

Replacement Considerations

Direct pin-compatible substitutes include other TL431 variants such as TL431AIDR or TL431BIDR, though these may offer tighter initial accuracy tolerances. Verify that alternative parts meet the same SOIC-8 package constraints and commercial temperature range requirements before substitution.