ASP1108-I42T

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Power management integrated circuit (PMIC) is an integrated “package” composed of several voltage regulator circuits, their peripheral circuits, and other components. It is designed to provide a regulated output voltage independent of the input voltage. The PMIC Voltage Regulators Special Purpose series includes the ASP1108-I42T, which is a voltage regulated DC/DC converter in monolithic form.

The ASP1108-I42T is mainly used for power applications in various digital consumer electronics, such as personal computers, laptops and digital cameras. It is specially designed for power supplies featuring high power especially to specific applications including renewable energy, industrial and automotive. This can be done with integrated output FET, precision current regulation, low voltage operation and good dynamic performance.

The ASP1108-I42T is an innovative step-down monolithic power supply with a full digital control. It is designed to generate any positive output voltage from 4.5V up to 28V. It has a high-performance overload protection, adjustable overload current limit and short-circuit protection. It features a low quiescent current mode, which is advantageous for portable applications, and input voltage range from 4.6V to 28V. In addition, it features a built-in fast-startup regulator and requires no external components.

The main feature of the ASP1108-I42T is its ultra-low quiescent current capability, which enables low power operation. The current drain is extremely low at about 0.4mA when the input voltage is lower than 4.6V, and it reaches up to just 4mA at an input voltage of 28V. This allows the ASP1108-I42T to be powered off an always-on connection like a USB port without undue power waste. Additionally, the startup time is very short, and a simple reset of the device is enough to bring it back to a usable state.

The ASP1108-I42T utilizes a feedback regulation loop, which allows the output voltage to be precisely regulated regardless of the load current and input voltage changes. The device also has an adjustable current limit, which can be set by programming an external resistor. It is also able to latch the switch off when an overload is detected and protect against short-circuit conditions.

The flip-chip package of the ASP1108-I42T has an integrated N-channel power switch. This switch allows for efficient power conversion, as it reduces the power dissipation by providing power directly to the output instead of going through a linear regulator. This switch is optimized for switching frequencies up to 3MHz, allowing for high efficiency and small total solution size.

Overall, the ASP1108-I42T is the ideal choice for a variety of applications where power efficiency, low power consumption and small solution size are paramount. This PMIC device is capable of providing a highly reliable output voltage in the presence of input voltage fluctuations, voltage transients and load changes, making it a great choice for everyday use in power applications.

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