TLV431CLPRE3

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

TLV431CLPRE3 is a microprogrammable, three-terminal adjustable shunt voltage reference developed by Texas Instruments. Its main application field is for precision low power applications such as electronic power conversion, battery management systems, instrumentation, and microprocessors. It is also used to provide a stable reference voltage with adjustable output voltage.

The TLV431CLPRE3 is a triple output voltage reference that operates in a very low power range (1 µA max). The adjustable shunt regulator has a wide output voltage range from 0.45 V to 4.5 V (with option to go below 0.5 V) with programmable precision output voltage and current limit.

The voltage reference consists of an adjustable voltage reference cell and an on-chip sub-circuit for automated adjustment. The adjustment sub-circuit makes use of the wide range of variable bias currents available for the adjustable reference cell and can adjust the open-circuit output voltage across a wide range of values in two selectable trim steps.

The programming of the reference cell is achieved by connecting the integrated Pass-Transistor-like structure to the external PWM input pin, providing the ability to adjust the reference voltage without access to the internal reference. The integrated pass transistor is also used to limit the output current of the reference, further enhancing the operational flexibility of the device.

The TLV431CLPRE3 utilizes an internal current limiter that acts as a short-circuit protection circuit for the reference cell. This feature makes the device suitable for use in systems that are exposed to transient overloads and over-temperature conditions. The current limit can be selected via a digital input via the Select pin, giving designers the ability to select between different current limiting levels.

The output voltage of the TLV431CLPRE3 can be adjusted at the factory in one of two selectable trim steps. It achieves constant output current in both steps with temperatures between -40°C and +125°C and load regulation of better than 100 ppm/mA maximum. The typical temperature coefficient of the reference voltage is 0.1 mV/°C maximum.

The TLV431CLPRE3 operates over a wide supply voltage range from 2.7 V to 5.5 V. Its operating temperature range is -55°C to +125°C and its maximum output current is 150mA. The device is available in a variety of packages, such as TO-92, SOT-23, SC-70, and LFCSP.

In summary, the TLV431CLPRE3 is a triple output voltage reference that can be used to provide programmable precision output voltage and current limit in very low power applications. Its adjustable shunt regulator has a wide output voltage range and it can limit the output current of the reference. The device is available in a variety of packages and its temperature coefficient is 0.1 mV/°C maximum. This makes it an ideal choice for precision low power applications in power conversion, battery management systems, instrumentation, and microprocessors.

The specific data is subject to PDF, and the above content is for reference