LD29080DT90R

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LD29080DT90R is a low-power, high-performance, low-noise low-dropout linear regulator designed for sub-micron CMOS process. It is a fixed regulators with output voltage adjustable within a certain range. Transconductance function prevents output voltage from exceeding its preset regulated level by sinking out of control current during voltage surges. This helps to protect the circuit from damage due to over-voltage or over-current scenarios. This particular LD29080DT90R is a single output regulator with an adjustable output voltage range of 1.2V to 6V.

LD29080DT90R features a typical low dropout voltage of only 250mV at full load current and low noise output. This makes it suitable for applications such as mobile phones, PDAs, digital still cameras, portable audio/video devices, data storage and medical diagnostic instruments. The maximum output current of LD29080DT90R is limited to 1A and has an operating temperature range of -40°C to 85°C. Typical current usage is between 10mA to 200mA. LD29080DT90R also accepts an input voltage ranging between 3V to 18V and over-voltage protection of up to 24V. Power supply rejection ratio is also excellent with values in the order of 115dB.

LD29080DT90R’s working principle is based on monolithic design. This includes two main stages; first is a pass element which controls the voltage and current transfer between input and output of the regulator. The second stage includes voltage comparator formed from two transistors and a resistor that compare the input and output voltages. If the difference between them is more than the allowable level, the pass element adjusts the output voltage to its preset level. This integrated design also helps to reduce size, noise, and power dissipation.

In conclusion, the LD29080DT90R is designed to provide an adjustable voltage source with excellent regulation and protection against over-current or voltage surges. It is small in size, efficient, low-noise and can work in wide range of temperatures. This makes it suitable for many applications in portable audio, video and computing devices.

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