TL431BQPKG3

The TL431BQPKG3 is a highly integrated voltage reference from Texas Instruments that is commonly used in many applications such as automotive, consumer electronics and industry. The TL431BQPKG3 is designed to provide precision voltage regulation in feedback circuits and is widely used in non-isolated DC/DC converters, AC/DC converters and switching power supplies. It can also be used for other purposes such as overvoltage and undervoltage protection and active current limiting.

The TL431BQPKG3 consists of a three-terminal adjustable shunt regulator, an internal temperature compensator, an internal voltage reference, an internal current source and an output voltage error amplifier. Its main purpose is to maintain a constant output voltage with a wide input voltage range. The TL431BQPKG3’s output voltage can be adjusted using external resistors to any value between 2.5V and 36V. The TL431BQPKG3 offers a wide range of temperature stability: -0.05%/°C at 0°C, -0.1%/°C at 25°C, and -0.2%/°C at 85°C.

The TL431BQPKG3 features an internal voltage reference source of 2.495V with a 0.05%/V line regulation and 0.3%/V load regulation. The internal current source of the device is also adjustable and can deliver up to 100mA depending on the application. The device features a current limit protection circuitry that turns off the device if the output current exceeds the set limit.

The TL431BQPKG3 requires a minimum load of 10mA to ensure accurate voltage regulation, while the maximum output voltage error amplifier gain is typically 10dB. The device can also act as a current limiter when installed with a current sense resistor. When activated, the current limiter reduces the output current to a safe level when an overcurrent situation is detected.

The TL431BQPKG3 is an excellent choice for applications that require a wide input voltage range, high accuracy and fast response. With its small size and low power consumption, it is also suitable for use in space-constrained battery operated applications. The TL431BQPKG3 is available in a small SOIC-8 package and is rated for operation up to 125°C.