RE-1209S/H

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DC-DC converters are electrical systems that convert electrical energy from one form to another, typically producing an electrical signal of different voltage and current levels from the input source. The RE-1209S/H, a high efficiency, high linearity isolated DC-DC converter, is one such device. It is a non-isolated device that offers high efficiency over a wide load range with fast transient response.

The RE-1209S/H is designed to convert high voltage input sources, such as automotive batteries, into low voltage output that can be used for a variety of applications such as handset, portable, and embedded systems. The device operates by using a high-frequency quasi-resonant switching technique, which allows for efficient conversion and elimination of the interference between input and output.\' It provides an adjustable output voltage range of 0.8V - 5V and can operate in both step down and step-up operating modes with a 1-7 Ah current limit.

The RE-1209S/H can be used for a number of applications, including energy harvesting, battery charging, stationary and mobile device applications, and automotive applications. It offers features like a wide input voltage range, tight line regulation, fast load transients, low noise, and high efficiency. The device also provides such protection circuits as an internal thermal shutdown, overvoltage protection, over-temperature protection, and short circuit protection for added safety.

The working principle of the RE-1209S/H is based on the power switch technology. The device uses a high-frequency quasi-resonant switching technique to convert the input voltage to the desired output voltage with high efficiency, and also provides a high power conversion rate and state-of-the-art EMI performance. The switching frequency is adjustable according to different needs and supports up to 65 kHz.

The RE-1209S/H features a highly integrated architecture, and its integrated components include P-channel and N-channel power MOSFETs, inductors, flyback transformer, a bias winding for the internal bias supplies, and a control IC for logic control and cycle by cycle current limiting. It also includes an analog voltage feedback network that ensures precise and stable output.

The RE-1209S/H has a wide operating temperature range of -40°C to +85°C and offers a low constant on-time of just 650 ns. It is engineered to offer a wide input voltage range of 4.5V to 22V, and is available in a compact 4.5mm x 7mm QFN-10 package. It also features an upgraded PCB design capable of providing high EMI performance for mobile applications.

In conclusion, the RE-1209S/H is a high efficiency and high linearity isolated DC-DC converter that offers a wide range of applications with its high efficiency and fast transient response. It is a highly integrated solution and features a wide operating temperature range, wide input voltage range, and tight line regulation. Its integrated components include P and N channel power MOSFETs, inductors, and control IC for added functionality and reliability.

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