TLV431AILP

Overview

The TLV431AILP is a precision programmable shunt voltage reference from Texas Instruments. It operates within a supply voltage range of 2.5 V to 20 V and provides an adjustable output voltage from 1.24 V to 20 V. The device features a typical initial accuracy of 0.4% at 25°C, with a maximum temperature coefficient of 60 ppm/°C over the industrial temperature range. It includes a built-in 2.5 V reference option for fixed applications and offers low dynamic output impedance. The component is housed in a compact SOT-23 package suitable for space-constrained designs.

Feature Summary

• Precision programmable shunt regulation with high accuracy
• Wide operating voltage range supporting diverse circuit requirements
• Low dynamic output impedance for stable performance under varying loads
• Compact surface-mount packaging for efficient board layout

Applications

• Portable equipment power supplies
• DC-to-DC converter feedback loops
• Battery chargers
• Voltage monitoring circuits

Procurement Notes

Verify the specific suffix 'A' indicates the industrial temperature grade (-40°C to +85°C) and 'LP' denotes the SOT-23 package. Confirm that the datasheet matches the intended application voltage and current requirements. Ensure compatibility with existing PCB footprints for the SOT-23 form factor. Check for any recent lifecycle status updates or alternative recommendations from the manufacturer before finalizing procurement.

Selection Notes

Select this component when a precise, adjustable voltage reference is needed in a small footprint. Consider the 0.4% initial accuracy and 60 ppm/°C temperature coefficient for applications requiring tight tolerance. Evaluate the operating voltage range against the system's supply rails. The SOT-23 package is ideal for portable devices where space is limited. Verify thermal performance if operating near maximum current limits.

Part Context

The TLV431 series represents a family of programmable shunt regulators widely used in analog and mixed-signal circuits. The TLV431AILP specifically targets cost-sensitive and space-constrained applications requiring reliable voltage referencing. It serves as a drop-in replacement for many standard Zener diodes and other shunt references, offering superior accuracy and stability. This part is integral to feedback networks in switching power supplies and linear regulators.

Replacement Considerations

Direct substitutes include the TLV431BILP (higher accuracy) or TLV431QML (military grade). Generic equivalents may exist but require verification of pinout and electrical specifications. Ensure any replacement maintains the same SOT-23 package and voltage range. Consult official cross-reference lists for validated alternatives.