AS1328A-BQFT-AD

The AS1328A-BQFT-AD is a step-down DC-DC converter specifically designed to convert an input voltage range of between 4.5V and 36V to an adjustable output voltage range of between 0.6V to 28V. This device employs synchronous rectification and uses a constant frequency, continuous current-mode (CCM) control architecture for enhanced efficiency, exceptional line and load regulation, and excellent transient response. AS1328A-BQFT-AD is ideal for battery-powered applications such as metering, medical, and industrial applications.

The device is capable of delivering up to 1.5A of continuous current, over a wide input voltage range. It is easy to use, and programming is simplified through the use of a single external resistor, which sets the output voltage of the device to any output voltage in the 0.6V-28V range. The device also integrates an adjustable soft-start, current limit, and over-temperature protection.

The AS1328A-BQFT-AD is a PWM controller with a built-in high-side MOSFET switch, internal power-on reset, and selectable frequency. The output voltage is regulated through a constant frequency current-mode (CFM) control, which provides excellent line and load regulation, fast transient response, and adjustable soft-start. The device is integrated with a low-side MOSFET to provide synchronous rectification, offering higher efficiency as compared to traditional buck regulators. The PWM controller can operate up to 1.5MHz, allowing for a very small component footprint.

The device features a low-voltage shutdown, which allows the device to be powered down from an external source, such as a battery, without putting additional stress on the input source. In addition, the device also features a power good signal indicator to notify the user when the output voltage is within the specified range.

The AS1328A-BQFT-AD is a highly integrated, cost-effective, and efficient DC-DC converter solution, making it ideal for a variety of battery-powered applications, including metering, medical, and industrial applications. It provides optimal voltage regulation and high efficiency with low quiescent current for powering low power components.