TL431BCLPRA

Overview

The TL431BCLPRA is a programmable precision shunt voltage reference manufactured by onsemi. It operates within an input voltage range of up to 36 V and provides an adjustable output voltage starting from a minimum of 2.495 V. The device features a typical initial accuracy tolerance of ±0.4% at 25°C, ensuring high precision in voltage regulation applications. It supports a cathode sink current capability ranging from 1.0 mA to 100 mA. The component exhibits a typical full-range temperature coefficient of 50 ppm/°C and maintains low dynamic output impedance. Designed for through-hole mounting, it utilizes the TO-92 (TO-226) package and functions reliably across an operating temperature range of 0°C to 70°C.

Feature Summary

• Programmable output voltage capability extending up to 36 V with precise adjustment
• High initial accuracy with a typical tolerance of ±0.4% at room temperature
• Temperature compensated operation across the full rated operating range
• Low dynamic output impedance and low output noise voltage characteristics

Applications

• Output voltage sensing amplifier in flyback power supply converters
• Precision voltage references in switching regulator feedback loops
• Portable equipment requiring stable reference voltages
• Battery chargers and power management circuits

Procurement Notes

Verify component authenticity and datasheet alignment due to potential lifecycle changes. Confirm RoHS compliance status and packaging type availability as distribution channels may vary. Check for obsolete notices or alternative part recommendations from onsemi before finalizing procurement plans.

Selection Notes

Select this component when high precision voltage referencing is required in space-constrained through-hole designs. The ±0.4% tolerance suits applications demanding tight regulation without external trimming. Ensure the operating temperature range meets system requirements, as this variant covers 0°C to 70°C.

Part Context

This device belongs to the TL431 family of programmable shunt regulators, widely used in power electronics for feedback control. Manufactured using onsemi's Treo platform technology, it integrates bipolar-CMOS-DMOS processes for robust performance. The TL431 series serves as a standard solution for replacing fixed Zener diodes in precision reference applications.

Replacement Considerations

Public confirmed substitute part numbers include TL431BCLPRAG.