ISL9305IRTHBCNLZ-T

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The ISL9305IRTHBCNLZ-T is a 3A buck regulator with integrated feedback comparator. It offers a wide input voltage range from 2.5V to 6V, adjustable output voltage from 0.8V to Vin - 0.3V and output current up to 3A. The device is ideal for space-constrained applications and requires few external components. This makes it very easy to use in a wide range of electronic systems.

The ISL9305IRTHBCNLZ-T provides a high level of integration and cost efficiency to address a big variety of applications related to voltage conversion and power management solutions. It integrates an on-chip reverse current protection and thermal shutdown protection. Additionally, it provides over-current limiting, over-voltage protection, under-voltage shutdown, and a power good flag output.

The integrated internal Loop Compensation allows fast transient response and high load regulation accuracy. The ISL9305IRTHBCNLZ-T also offers cycle-by-cycle current limiting, soft start, and external PWM control to reduce EMI. Its 2-MHz operating frequency allows flexible solutions in terms of size and efficiency.

The ISL9305IRTHBCNLZ-T is designed for use in fixed and adjustable voltage linear and switching conversion applications. It provides an efficient and cost-effective solution for distributing power to multiple power management domains. As a highly integrated device, it simplifies the design, saves space and enhances flexibility. It is also suitable for systems requiring reverse current limiting, as this is built into the device.

The device operates on a wide voltage range with adjustable output voltage and load current up to 3A. It is designed for low output noise and good load regulation over line and temperature range. The output voltage is regulated with a two-stage architecture, consisting of a fast transient control loop and a voltage error amplifier. The control loop is implemented with a comparator, an offset cell, and a compensator network for fast transient response, low output noise, and excellent line regulation. The external resistor divider sets the output voltage and the feedback connection from the output is monitored to regulate the output voltage.

The ISL9305IRTHBCNLZ-T also has an integrated power-good flag output pin that provides an indication of the output voltage reaching a user-defined valid level. The PGOOD pin is active low and responds to any change in output voltage, whether through an external control signal or load transient. The power-good flag also helps monitor the output voltage.

In addition, it has an integrated current limit comparator that turns the output off when the load current exceeds a certain predefined level. The device can be programmed using several external pins. Soft start is provided through an external capacitor connected to the prog pin. Additionally, an enable pin can be used to enable and disable the device.

The ISL9305IRTHBCNLZ-T is ideally suited for voltage conversion and power management applications in telecommunication, industrial, and automotive system designs. The device is available in a small, thermally enhanced, 4x5mm TDFN package that is ideal for space-constrained applications.

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