ISL9011IRGPZ

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The Linear Voltage Regulator IC ISL9011IRGPZ is a high performance monolithic controller for switching power supplies. It features adjustable output voltage, adjustable current limit and over temperature protection. It is designed for applications where a regulated supply voltage is required, such as digital systems and analog systems.

The ISL9011 operates in either a fixed or adjustable voltage mode. In fixed voltage mode the voltage is set by an external resistor. The current limit is adjustable up to a maximum of 2A. The device is protected against over-temperature conditions through an internal thermal shutdown.

The ISL9011 has a wide range of output voltages and is available in both SOT-23-5 and SOT-23-6 packages. The operating temperature range is -40°C to +125°C. It features the current foldback mode for high reliability during overload and short-circuit protection.

The ISL9011 is used in a variety of different applications, such as consumer electronics, industrial power supplies, motor control, medical equipment, and automotive systems. It is ideal for power supplies that require a reliable, high performance regulator.

The working principle of the ISL9011 is based on the control loop. This loop includes the output voltage feedback signal, the error amplifier and the current sense circuit. The feedback signal is proportional to the output voltage and is compared with the reference voltage by the error amplifier. The signal output from the error amplifier is then connected to the current sense circuit and the output voltage is controlled by varying the Switching Frequency and signal current.

The current sense circuit senses the amount of current flowing in the output load and sends this information to the output current-limit register. This register adjusts the switching frequency and controls the output current, thus preventing the device from exceeding the maximum current rating.

In order to ensure proper operation, the ISL9011 also includes a soft-start control circuit. This circuit prevents large inrush currents during power up and protects the output voltage from overshoot.

The ISL9011 is an ideal regulator for applications that require high performance and accuracy. It is capable of supplying up to 2A of continuous output current, and features low voltage drop across its power switches as well as low EMI noise operation.

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