ISL91106IIAZ-TR5654

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ISL91106IIAZ-TR5654 is a high-efficiency, high-performance DC-DC switching regulator with wide input voltage, up to 25V, and junction temperature range up to 110℃. The device, mainly used in communication, automotive, industrial, and consumer applications, can support multiple output voltages in a single chip and offers low-voltage, low-quiescent current and high current capability.

As a member of Power Management Integrated Circuit (PMIC) family, ISL91106IIAZ-TR5654 is classified under Voltage Regulators and DC-DC Switching Regulators to provide power delivery solutions for various power supplies. Broadly, the device’s application field covers input-output configurations in communications, industrial, automotive, consumer and other applications.

The regulator works based on a synchronous rectification buck (step down) conversion process. Output current is controlled by a Pulse Width Modulation (PWM) modulation process, where the regulating frequency is determined by a voltage divider resistors from the output voltage. The high-efficiency circuit topology design reduces power loss due to switching. Output voltage is set by an external resistive feedback (divider) network and controlled by two PMOS transistors. The operating frequency response of this device is optimized for the best performance under transient loads. The current sensing mechanism limits the output current to a predetermined level when the output power exceeds the maximum level.

ISL91106IIAZ-TR5654 contains several protection features to guard against abnormal conditions, such as synchronous rectification shorts, undervoltage, overvoltage, and over-current protection. It also includes an external power-good (PG) flag indicates output regulation and synchronization. The device also includes an independent enable input ( EN ) as well as an internal power switch that can be used to turn the device on/off.

In low-voltage applications, the device can be programmed to operate at a very low voltage by using a special clamp which sets the lowest possible output voltage. This feature gives flexibility to the user to select the output voltage based on the application needs.The enable control pin controls the external power FET to enable/disable the operating circuit of the regulator and keep the temperature of the switch transistor within the required range.

The integrated circuits of ISL91106IIAZ-TR5654 are optimized for switching losses and heat dissipation. The integrated FET switch and low-power integrated FET drain characteristics make the device ideal for low-voltage applications. The circuits of this device also include settable current-limit threshold, over-voltage protection as well as under voltage protection to ensure that the operation stays within the desired range and meets the applications parameters.

In summary, ISL91106IIAZ-TR5654 is a high efficiency, high performance device ideal for industrial, aviation, automotive, communication and other applications. It provides the flexibility to customize the voltage range, current level and synchronization setup to provide the right stability and reliable performance to the user. With several protection mechanisms and advanced topologies, this is an ideal solution for efficient and safe power delivery.

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