ISF2405A

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The ISF2405A is a high-performance, step-up DC-DC converter from the popular 24xx series of switching regulators developed by RECOM Power. It is a high efficiency, low-noise, and wide input voltage range point-of-load (POL) DC/DC converters. This device is particularly suitable for any system having high current requirements up to 6 A with an input voltage range from 4.5 V to 30 V.

The ISF2405A is based on contrast to traditional linear regulators provide up to 95% efficiency, making them more efficient and more cost-effective than their linear counterparts. It provides a stable 5 V, 12 V, 15 V or 24 V output voltage with an adjustable output voltage range from 0.8 V to 5 V. It is available in a wide variety of packages depending on the application and is designed to operate over a wide operating temperature range of -40 to +105 °C.

The ISF2405A has an ultra-low ripple noise of 1 mV, reducing output ripple and eliminating additional filtering components in the system. It has a low start-up current of 200 µA and a low shutdown current of 0.5 µA, making it suitable for battery-powered applications such as portable devices. It also includes features such as over voltage protection, over current protection, short circuit protection, and under voltage lock out protection for improved reliability.

The ISF2405A operates in a step-up or boost converter configuration. The input voltage is converted to a higher output voltage through a series of switching steps. It has an internal, current-mode control switching regulator with an integrated power MOSFET, operating at a fixed switching frequency. The regulator also includes internal compensation for adjusting the output voltage and current regulation.

The ISF2405A is designed to operate in an open-loop configuration, meaning no external feedback components are required. The user can select on-board resistor settings for output voltage selection as well as current limit and hysteresis voltage. The user can also use a trim potentiometer for adjusting the output voltage and current limit.

The ISF2405A has a wide range of applications such as power management for medical, automotive, industrial, computing, and consumer electronic systems. It can also be used in military and avionics applications given its wide operating temperature range. The device is ideal for low power applications where size, efficiency, and noise are critical.

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