Texas Instruments

TL431BQLP

TL431BQLP Description

The TL431BQLP from Texas Instruments is a high-precision, adjustable shunt voltage reference designed for applications requiring stable voltage regulation. This TO-92-3 packaged device offers an output voltage range of 2.495V to 36V, making it highly versatile for various circuit designs. With a ±0.5% tolerance and 100 mA output current capability, it ensures reliable performance in precision voltage reference applications. The TL431BQLP operates as a programmable voltage reference, allowing designers to set the output voltage using external resistors. Its low cathode current (700 µA) and shunt reference topology make it ideal for low-power and space-constrained designs.

TL431BQLP Features

• Adjustable Output Voltage (2.495V–36V): Enables flexible design configurations.
• High Precision (±0.5% Tolerance): Ensures accurate voltage regulation.
• Low Cathode Current (700 µA): Reduces power consumption in standby modes.
• 100 mA Output Current: Supports higher load demands compared to similar references.
• Shunt Reference Type: Simplifies circuit design for voltage clamping and regulation.
• Wide Operating Temperature Range: Suitable for industrial and automotive environments.
• RoHS3 Compliant & REACH Unaffected: Meets environmental and regulatory standards.
• Through-Hole (TO-92-3) Packaging: Facilitates easy prototyping and PCB integration.

TL431BQLP Applications

The TL431BQLP is widely used in:

• Switching Power Supplies: Provides precise feedback voltage regulation.
• Voltage Monitoring Circuits: Ensures stable thresholds for over/under-voltage protection.
• Battery Chargers: Maintains accurate reference voltages for charge control.
• LED Drivers: Acts as a stable reference for constant current regulation.
• Industrial Control Systems: Delivers reliable voltage references in harsh environments.
• Consumer Electronics: Used in power management for TVs, set-top boxes, and audio systems.

Conclusion of TL431BQLP

The TL431BQLP stands out as a high-performance, adjustable shunt voltage reference with exceptional accuracy (±0.5%) and wide voltage range (up to 36V). Its low power consumption, high output current capability, and robust packaging make it a preferred choice for engineers designing precision voltage regulation systems. Whether in power supplies, battery management, or industrial controls, the TL431BQLP offers reliability, flexibility, and ease of integration, making it a cornerstone component in modern electronic designs.