LT1431CZ#TRPBF

Voltage Reference Overview

The LT1431CZ#TRPBF is a programmable shunt voltage regulator in a 3-lead TO-92 plastic package. It features a nominal 2.5V reference voltage with a guaranteed initial tolerance of ±0.4%. The device supports an operating temperature range from 0°C to 70°C and handles a maximum cathode current of 100mA. It operates within a supply voltage range up to 36V, offering low reference pin current and fast turn-on characteristics suitable for precision applications.

Voltage Reference Feature Summary

• Adjustable shunt regulation with internal divider resistors enabling standalone 5V operation
• High accuracy with 0.4% initial voltage tolerance and low dynamic output impedance
• Pin-compatible with TL431 for simplified design upgrades

Voltage Reference Applications

• Linear regulators
• Adjustable power supplies
• Switching power supplies

Voltage Reference Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm that the C-grade designation aligns with the required commercial temperature range of 0°C to 70°C for your application environment. Ensure compatibility with the TO-92 footprint during PCB layout finalization.

Voltage Reference Selection Notes

Select this part when a TL431-compatible form factor is required but higher initial accuracy is needed. The 0.4% tolerance provides better precision than standard alternatives. Consider the 100mA sink capability against load requirements and verify that the 36V maximum voltage rating exceeds the circuit's peak operating conditions.

Voltage Reference Part Context

This component belongs to the LT1431 family of adjustable shunt regulators manufactured by Analog Devices. The Z package variant specifically offers a compact 3-lead TO-92 configuration, distinguishing it from the 8-pin DIP or SOIC versions while maintaining identical electrical performance specifications across the series.

Voltage Reference Replacement Considerations

LT1431CZ#PBF