CBS1004803-F4

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DC-DC converters are devices that convert a direct-current source to an alternating voltage source. DC-DC converters are widely used in a variety of applications, including power supplies, industrial equipment, medical equipment, automotive electronics, and communication systems. The CBS1004803-F4 is a DC-DC converter manufactured by Texas Instruments. This device converts unregulated an input voltage of 4.5 to 36 Vdc and provides a regulated output voltage of 3.3Vdc.

The CBS1004803-F4 is a synchronous buck converter. Buck converters are step-down power converters, commonly used to provide a low-voltage output from a higher voltage input. This device integrates two switches and requires only two external components to form a complete power conversion circuit. The device is protected against over voltage, over current, and short circuit conditions, making it ideal for applications that require reliable operation. The converter has a switching frequency of 400 kHz and a footprint of 3.5 x 5 mm, making it suitable for a variety of power management applications.

The CBS1004803-F4 is ideal for powering DSPs, FPGAs, and microcontrollers. The device is also suitable for powering AC/DC electrical equipment, such as LCD TVs, laptops, and AC/DC adapters. Moreover, the device is suitable for charging applications, such as USB charging adapters and battery chargers.

The working principle of the CBS1004803-F4 is based on switching power conversion. A high-side and a low-side switch control the current flow in a LC network, which is known as the “inductor-capacitor” network or “LC network”. The operation of the device is based on the fact that a current will flow in an LC network when a voltage difference is applied across its terminals. The high-side switch (M1) controls the voltage applied to the LC network, while the low-side switch (M2) controls the current flowing through the LC network.

The CBS1004803-F4 includes internal features that help optimize the system performance. These features include: input voltage level shifter, soft start, and a high- voltage startup circuit. The device also has active supply current sensing circuitry that enables external current sensing. This device also features adjustable loop soft-start and frequency foldback for improved system reliability.

The CBS1004803-F4 is a highly efficient DC-DC converter that provides a regulated 3.3Vdc output from a 4.5-36 Vdc input. The device is suitable for a variety of power management applications, including powering DSPs, FPGAs, microcontrollers, AC/DC electrical equipment, and charging applications. The device features an integrated LC network, internal features to optimize system performance, and external current sensing. This makes the device a reliable and cost-effective solution for a variety of applications.

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