ISL9307IRTAANCZ-T7A

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The ISL9307IRTAANCZ-T7A is a high-performance, low-voltage, 2.3V/3A synchronous buck converter with integrated power switches. It is a low-noise, high-accuracy mixed-mode linear/switching regulator specifically designed for regulations of output voltages from 0.8V to 2.8V. This device offers low noise operation and a high current drive capability of 3A to power step-down applications.

The ISL9307IRTAANCZ-T7A is well suited for applications such as audio amplifiers, DSP systems, LED backlighting, white goods, and alternative energy systems. This device integrates an input voltage range up to 5.5V, a programmable switching frequency, a soft-start feature, and an enable pin to control the device.

The ISL9307IRTAANCZ-T7A features a variable frequency Mode of operation, with a programmable switching frequency range from 200kHz to 1.8MHz. It also features an adjustable output voltage, a programmable soft-start feature, over-current protection, enable pin control and a power good flag.

This regulator also offers mixed-mode operation. This means that either a linear or a switching regulator can be selected depending on the power requirements of the application. The linear regulator operates in the lower current range from 0.2mA to 0.5mA, while the switching regulator is enabled for power levels from 0.5mA to 2.3A. This hybrid operation allows for an improved dynamic performance, a smaller solution area, and higher efficiency.

The ISL9307IRTAANCZ-T7A implements a dual-phase, single-ended output voltage regulator architecture. The two phases operate at 180° out of phase and are controlled by a peak current mode modulator. This architecture provides fast transient response, small output voltage ripple and low noise operation over a wide range of input voltages.

The ISL9307IRTAANCZ-T7A features a Programmable Soft-Start feature. This provides a sequence of rising output voltages with a programmable rise time. This allows for the voltage to ramp up slowly and eliminates the inrush current at system turn-on, enabling the device to start up quickly and safely.

The ISL9307IRTAANCZ-T7A is protected from over-current conditions by the current limit circuitry. When the output current reaches the current limit threshold, the device switches off for a given period of time and then resumes normal operation.

In summary, the ISL9307IRTAANCZ-T7A is a high-performance, low-voltage, 2.3V/3A synchronous buck converter with integrated power switches and features a hybrid, dual-phase, single-ended output voltage regulator architecture with a current limit feature and a programmable soft-start feature. This device is ideal for applications in the audio amplifiers, DSP systems, LED backlighting, white goods, and alternative energy systems.

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