TS821IZ

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The TS821IZ is a component in the group of power management and ICs (PMICs), specifically voltage references. The IC is a low-power, fixed 3.0V voltage reference with a tight initial accuracy over industry-standard temperature ranges, making it an important tool in ensuring reliable feedback for a broad range of industrial, consumer and automotive applications. With rated current as low as 25 nA and a wide operating temperature range, the TS821IZ is suitable for space -constrained and harsh environments where accuracy and reliability are of paramount importance.

The IC’s basic structure comprises of 7 terminals: VCC, GND, OUT, FB, INH, A5V, and ZERO. VCC and GND are used to supply power to the IC where VCC is the positive supply voltage, GND as the return path for power and current flow. OUT pin is used to output the 3Vref, a stable 3.0V voltage reference with a tight accuracy. The FB connection allows a feedback loop to the IC, providing it with an accurate reference voltage. The INH pin enables or disables the IC, allowing the user to dynamically switch the IC on or off in applications requiring dynamic scheduling. The A5V pin provides a 5V auxiliary voltage supply when the internal power supply is lower than 5V. Last but not least, the ZERO pin is used to reset the IC when a low-level input signal is applied to it.

At its core, the TS821IZ uses a regulation circuit composed of four closely matched transistors for the reference voltage. Through this circuit, the IC can monitor and stabilizes the output voltage wherever it is required and maintains the voltage in the range the user specifies. It uses bandgap regulator design and delivers an output voltage that is proportional to absolute temperature and extremely accurate over temperature and time.

The design of the TS821IZ simplifies the issues involved with achieving a stable, accurate voltage reference in an application. The IC is capable of delivering precision accuracy from -40°C to 85°C with an initial accuracy of ±0.3%. It also has excellent long-term stability, suitable for precision feedback applications in the industrial, consumer, or automotive market. With a quiescent current of just 25 nA and low temperature sensitivity, the TS821IZ is an ideal choice when power efficiency and high accuracy are crucial.

The TS821IZ is an ideal reference voltage regulator for high-power electronics systems, such as AC-DC converters, DC-DC step-down converters, boost converters, buck converters, electronic lamps, LCDs, LEDs, RF power amplifiers, and various other power management applications. It can also be used in battery powered systems, providing optimal power efficiency and accuracy even in the increasingly challenging conditions, such as low-voltage, low-current and high temperature environments.

The TS821IZ is such a powerful tool to meet the stringent demands of many low-power and high-precision applications. The low power consumption allows it to perform reliably with fewer components, thereby lowering costs and space constraints while delivering precise voltage references.

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