TLVH431AILP

Overview

The TLVH431AILP is a three-terminal adjustable shunt voltage reference manufactured by Texas Instruments. It operates within a supply voltage range of 2.5 V to 36 V and provides an adjustable output voltage from 1.24 V to 18 V via external resistors. The device features a typical dynamic impedance of 0.22 Ω and supports a cathode current range from 100 µA to 60 mA. It offers initial accuracy options including 0.25%, 0.5%, 1%, and 1.5%. The component is housed in a TO-92-3 package with a maximum temperature coefficient of 100 ppm/°C and functions across a temperature range of -40°C to +125°C.

Feature Summary

• Adjustable output voltage capability ranging from 1.24 V to 18 V using external resistor dividers
• Low operating current consumption of 100 µA at 25 °C for power-efficient designs
• High sink current capability up to 60 mA with low dynamic impedance
• Guaranteed temperature stability over the full operating temperature range

Applications

• Battery chargers
• Switch mode power supplies
• Battery operated equipment
• Data acquisition systems
• Energy management circuits

Procurement Notes

Verify the specific suffix code (AILP) against the official datasheet to confirm the exact accuracy grade, as variations exist within the family. Ensure the TO-92-3 through-hole package matches the target PCB layout requirements. Confirm that the 100 µA minimum operating current is compatible with the application's quiescent current constraints. Check for any recent Product Change Notifications regarding pinout or material composition updates.

Selection Notes

Select this component when a low-power, high-precision shunt regulator is required in a through-hole package. The wide operating current range allows flexibility in feedback network design. Consider the 100 ppm/°C temperature coefficient for applications requiring stable reference voltages across varying thermal conditions. Compare against standard TL431 devices if higher current drive or different package types are needed.

Part Context

The TLVH431 series represents a low-voltage, precision adjustable shunt regulator designed for space-constrained and power-sensitive applications. It serves as a modern alternative to traditional bandgap references, offering improved performance in terms of operating current and dynamic impedance. The device integrates a 1.24 V internal reference with an error amplifier to provide precise voltage regulation.

Replacement Considerations

Direct replacements include other variants within the TLVH431 family such as TLVH431BILP or TLVH431MILP, which share identical pinouts and functionality but differ in initial accuracy grades. Standard TL431 equivalents may be considered if package compatibility and slightly higher operating currents are acceptable.