ISL6440IAZ-TK

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The ISL6440IAZ-TK is an integrated switching controller from Intersil Corporation. It is part of the ISL64xx family of high-performance DC-DC controllers, which are capable of delivering high efficiency and low ripple for switch mode power supply (SMPS) applications. The ISL6440IAZ-TK is specifically designed for applications requiring a high efficiency synchronous step down converter with a wide input voltage range of 4.5V to 18V. It features Intersil’s proprietary HyperLight Load™ technology which eliminates the need for an external power switch. The ISL6440IAZ-TK also features AccurateRip™, a ripple cancellation feature, and integrated lossless current sensing, making it capable of adjusting the switching frequency and optimally controlling the output voltage and current as load conditions change.

The ISL6440IAZ-TK is a multi-mode device, meaning it can be programmed to operate in a variety of configurations, including peak current mode, average current mode and voltage mode. In peak current mode, the device responds quickly to changing loads and provides excellent dynamic response, making it ideal for a wide range of applications. In average current mode the device is able to maintain a constant output current regardless of load variations. The voltage mode configuration is best suited for applications which require a fixed voltage output with no current control.

Other features of the ISL6440IAZ-TK include pulse-width modulation (PWM) and pulse-frequency modulation (PFM) modes, which provide a precision voltage output with fast transient response, and programmable undervoltage lockout (UVLO) to protect the device against low input voltage conditions. The device also features an integrated oscillator, providing a self-compensating frequency synchronization which makes the ISL6440IAZ-TK a reliable, low-maintenance solution.

The ISL6440IAZ-TK is housed in a QFN package and is specified to operate over the -40°C to +85°C temperature range. It is also RoHS compliant, making it an ideal choice for both commercial and industrial applications.

In summary, the ISL6440IAZ-TK is a versatile and efficient DC-DC switching controller which is well-suited for a variety of switch mode applications requiring a wide input voltage range, high efficiency and low ripple. Its simple architecture, combined with its feature-rich design, make it the perfect solution for a broad range of switch mode power supply applications.

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