S-8353H40MC-IWZT2G

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The S-8353H40MC-IW-T2G is a DC-DC buck switching regulator from Rohm Semiconductor. It is a part of the family of PMIC – Voltage Regulators – DC DC Switching Regulators. This device is integrated with advanced features like high-efficiency, low input current ripple, low-noise voltage regulation and ultra-small package. It also provides adaptive voltage scaling (AVS) for improved power efficiency.

The S-8353H40MC-IW-T2G has a wide operating temperature range from -40 to +125°C and can handle a voltage input range of 4.5- to 20 V. It provides current up to 5A and can control up to 20 regulated output voltages with a voltage range up to 30 V. It features a built-in adjustable soft-start circuit and enables current-limit operation with selectable levels of current. Furthermore, it also has a power good output signal, thermal shutdown circuit and switch-on protection from turn-off transients.

Apart from power supplies, the S-8353H40MC-IW-T2G has a variety of potential application fields. It can be used for many computing, consumer, automotive and industrial applications with low noise output voltage. These include processors, gaming consoles, TV sets, game controllers, cameras, sound systems, communication equipment, LED lighting systems and more.

The S-8353H40MC-IW-T2G switching regulator works on the simple principle of controlling the voltage by switching the current. In this device, an internal MOSFET is used as a switch which is driven by the internal control block. The input voltage is applied across this MOSFET, controlling the current flow through it. This generates the desired output voltage across a series of inductors and capacitors. The excitation of the MOSFET is achieved by changing its switching frequency by voltage or current feedback loop circuits.

Moreover, the S-8353H40MC-IW-T2G can boast of a constant output current mode operation, as well as mode for improved efficiency and step-load operation. Its constant current mode increases the output current in order to maintain the output voltage constant. This is achieved by limiting the output current to a predetermined level. On the other hand, the improved efficiency mode reduces the switching frequency, resulting in higher efficiency. Finally, the step-load introduces a second output voltage to handle higher transient loads.

In conclusion, the S-8353H40MC-IW-T2G is a highly versatile device. It ensures high efficiency, low input current ripple, and low noise in output voltage regulation making it suitable for a variety of applications. The DC-DC buck switching regulator is bound to perform well in the demanding world of consumer, automotive and industrial applications.

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