AZ1085S-ADJTRG1

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AZ1085S-ADJTRG1 is an adjustable, high precision, low dropout linear voltage regulator manufactured by Diodes inc. The product series includes 9 models with adjustable output current range from 0.2A up to 5A.

The device is optimized for very low dropout voltage and adjustable voltage output from 1.2V to 15V. It features two-stage architecture to ensure low dropout performance, 100％ line and load regulation, and excellent transient response due to its sophisticated sub-bandgap enable circuit. The AZ1085S-ADJTRG1 is available in a SOT-23-5, DFN-3x3-8, or SOT-89-3 package.

The AZ1085S-ADJTRG1 voltage regulator is particularly suitable for applications where extremely low quiescent current and low dropout voltage is required or when component count must be carefully managed for space constraints. The AZ1085S-ADJTRG1 can be utilized in mobile phone, laptops, tablets, portable media players, data centers and industrial applications.

The AZ1085S-ADJTRG1 is a positive voltage regulator that is designed to maintain a constant voltage output, responding to input fluctuations, load change and temperature. It is based on a two-stage topology that combines a linear regulator and a series P-channel MOSFET pass element. The device includes a voltage reference, current source and a control logic.

The first stage of the regulator is a bandgap voltage reference that provides a voltage reference of 1.2V (nominal). This voltage is amplified by an error amplifier and compared with a resistive voltage divider that sets the desired output voltage. The difference between these two voltages is used to control the pass element in order to maintain the desired output voltage.

The second stage of the regulator consists of the P-channel MOSFET pass element. When this element is off, no current flows through the output and the output voltage is 0. When it is on, the current passing through is determined by the current source, which is controlled by the voltage on the FB pin.

The AZ1085S-ADJTRG1 includes an overload protection circuit. When the output current exceeds a certain level, the pass element cutoff, preventing the device from overloading. This function is also provided by an over temperature protection circuit, which shuts down the regulator when the die temperature goes above a certain level.

The AZ1085S-ADJTRG1 provides very low quiescent current and excellent load regulation. This adjustable voltage regulator offers excellent line-regulation, fast transient response and low output noise to minimize the effect of power supply fluctuations.

Overall, the AZ1085S-ADJTRG1 is a low dropout linear voltage regulator that offers excellent performance in space-constrained applications with very low quiescent current and high noise immunity. The device is suitable for mobile phone, laptop, tablet, portable media players, data centers and industrial applications. It features two-stage architecture to ensure low dropout performance, 100％ line and load regulation, overload and over temperature protection circuits, and excellent transient response.

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