ZR285F03TA Integrated Circuits (ICs)

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The Voltage References are a type of PMIC (Power Management Integrated Circuit) that is responsible for regulating the power supply by maintaining a constant output voltage level in the presence of pulse load and line voltage variations. The ZR285F03TA is a low-power CMOS Voltage Reference specifically designed for LCD TVs, Digital Set-top Boxes, and other consumer electronics products. It is characterized by a low quiescent current, fast startup time, and high accuracy.

The ZR285F03TA is optimized to provide a stable, accurate output voltage with minimum power consumption. Its output voltage is adjustable with an external divider. The output voltage range is from 2.0V up to 3.2V. The maximum output current is 0.2mA, which is suitable for the application where voltage scaling is required. The ZR285F03TA has low quiescent current of 0.2mA at 10V which helps to keep the quiescent power dissipation low.

The ZR285F03TA allows for multiple reference lookup configurations. It offers two reference voltage options: 2.0V and 3.2V. Using an external divider, an output voltage between 2.0V and 3.2V can be obtained. In parallel lookup mode, the output voltage can be increased or decreased linearly with the external R1 and R2 resistor ratio. This allows the ZR285F03TA to be used in applications that require adjustable reference voltage.

The ZR285F03TA features a fast start-up time of less than 1ms and offers a high accuracy of 0.4% over temperature and 11 years accumulated voltage reference accuracy. This makes the device suitable for LCD TV, DTV and Set-top Box applications that constantly changing line voltage and load. The device is fully protected with under-voltage, overload, and thermal overload protection.

The ZR285F03TA offers various operational modes, including forcing the output into a low quiescent current standby mode, using the Auto Zero Mode, to improve the device input offset accuracy, and a burst mode, to reduce oscillations. The Auto Zero Mode helps to reduce the input offset voltage of the device, while in burst mode the device is turned off and on periodically to adjust its output voltage.

The ZR285F03TA is a low-power CMOS Voltage Reference designed for LCD TVs, Digital Set-top Boxes, and other consumer electronics devices. It features a low quiescent current, fast startup time, and high accuracy, making it suitable for applications that are constantly changing line voltage and load. Its multiple reference lookup configuration, two reference voltage options, and auto zero mode make the device ideal for adjustable reference applications. Its high accuracy and burst mode also offer greater stability and performance.

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