LT1431IZ#PBF

Voltage Reference Overview

The LT1431IZ#PBF is a programmable shunt voltage regulator in a 3-lead TO-92 plastic package. It features a guaranteed 0.4% initial voltage tolerance and operates within a temperature range of -40°C to 85°C. The device provides a nominal internal current limit of 100mA, with sink capability ranging from 1mA to 100mA. It supports output voltages between 2.5V and 36V when configured with external resistors.

Voltage Reference Feature Summary

• Adjustable shunt voltage regulation with high initial accuracy
• Internal bias current cancellation for low reference pin current
• Pin-compatible design with TL431 for simplified upgrades

Voltage Reference Applications

• Linear regulators
• Adjustable power supplies
• Switching power supplies

Voltage Reference Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence. Confirm the Z package designation matches the required TO-92 form factor. Ensure the 'I' grade specification aligns with the necessary industrial operating temperature range requirements for the target application environment.

Voltage Reference Selection Notes

Select this component for applications requiring a direct replacement for TL431 devices with improved initial accuracy. Consider the 3-pin configuration for space-constrained designs. Evaluate the need for external compensation if driving complex capacitive loads or utilizing the COMP pin for stability enhancement in feedback loops.

Voltage Reference Part Context

This part belongs to the LT1431 family of adjustable shunt regulators manufactured by Analog Devices Inc. (formerly Linear Technology). The family includes various packages such as 8-lead DIP, SOIC, and CERDIP options, offering flexibility for different thermal and spatial constraints while maintaining consistent electrical performance characteristics across the series.

Voltage Reference Replacement Considerations

LT1431CZ#PBF