DF04S4805A

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DC DC Converters are widely used in many fields due to their ability to convert direct current (DC) into a different form of DC with different voltage and/or current levels. The DF04S4805A is a high efficiency, 18V, 1.2A DC DC converter with wide range of applications.

The DF04S4805A is a high-frequency, step-down converter featuring a current-mode, hysteretic-style constant frequency control. With an efficiency of up to 95%, the DF04S4805A is suitable for use in many applications such as power supplies, medical-device chargers, and DC/DC convertors. It also has a fast start-up time of less than 500ns, making it suitable for a wide range of applications. The DF04S4805A has a high-frequency operating range of up to 500kHz and can operate over a wide ambient temperature range of -40¦C~ +85¦C.

The DF04S4805A is a synchronous rectification type DC DC converter and works on a flyback topology. It is designed for high-frequency and high-efficiency applications, with the primary side regulating current-mode circuit (FCM) providing steady frequency current mode control. By driving an N-channel MOSFET for the primary switch, it can provide a high efficiency of up to 95%. In addition to the current-mode circuit, the DF04S4805A also includes various protection functions such as short circuit protection, thermal shutdown protection, output over-voltage protection, and over-load protection.

The DF04S4805A is available in both SMD and through-hole packages, and is designed to meet FCC Class B and EN55-011 standards for electromagnetic compatibility. It can also be used in low-power applications, such as portable or hand-held applications that require a minimum component count. The DF04S4805A is ideal for low-power and size-constrained applications, such as notebook, tablet, cellphone, or digital home appliance applications.

The DF04S4805A can be used in a wide range of applications due to its high efficiency and wide range of features and protections. Its current-mode control circuit and fast start-up time make it suitable for applications requiring a low power consumption, while its built-in protection features ensure it can be used with minimal worries about damage or destruction. The DF04S4805A is an ideal choice for applications involving both high efficiency and low power.

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