S-8533A28AFT-TB-G

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The S-8533A28AFT-TB-G is a DC-DC switching controller manufactured by Seiko Epson Corporation. It is part of their PMIC - Voltage Regulators - DC DC Switching Controllers product line. This controller is designed to provide optimum design flexibility and cost effectiveness while also providing better thermal performance over other products in its class. It is a dual-phase PWM (pulse width modulation) controller that uses low-side and high-side MOSFETs to regulate voltage. It is ideal for applications such as DC-DC converters and power supplies.

The S-8533A28AFT-TB-G is designed to provide high efficiency and robust system performance. It uses a proprietary control architecture and an integrated MR2 current-balance circuit for accurate current balance between the high-side and low-side MOSFETs. The device features a soft-start circuit for reduced system startup time and improved reliability, a fault-detection circuit for system health monitoring, an enable-output control circuit for improved system reliability, and internal thermal protection. The device also features a wide frequency range, adjustable gate-drive current, and a cascade I2C interface for flexible system configurability.

The S-8533A28AFT-TB-G integrated voltage regulator has a wide input voltage range of 6 V to 40 V, which allows it to be used in a variety of applications. It can provide up to 30 W of output power with low output resistance and no additional output capacitors. The device\'s wide frequency range of 100 kHz to 800 kHz enables high frequency operation for improved efficiency and lower noise. The device also supports adjustable output voltage, current foldback and short circuit protection.

The S-8533A28AFT-TB-G works using the principle of pulse width modulation (PWM). In PWM, the width of each pulse determines the amount of power delivered to the load. In the S-8533A28AFT-TB-G, analog voltage feedback is used to control the on-time of the high-side switch. The PWM circuit detects the voltage level of each pulse, compares it with the target level, and adjusts the on-time as required. This causes the output voltage to be maintained at a constant level due to the feedback loop. The same process is used to regulate the current in the load, ensuring that the system remains in balance.

The S-8533A28AFT-TB-G is ideal for applications such as Buck or Buck-Boost voltage regulators, DC-DC converters, and power supplies, as well as other applications requiring regulated output voltage. It features a wide operating temperature range from –20°C to 85°C, and is protected from over-temperature, under-voltage and over-voltage conditions. The device also features on-chip EMI filtering for improved EMI performance.

The S-8533A28AFT-TB-G provides performance, reliability and flexibility for a wide range of voltage regulation applications. It can be used in systems requiring highly efficient power conversion, improved system health monitoring, better thermal performance, and optimized design flexibility due to its low profile package. The device also provides options for configurable output voltage levels, current foldback and short circuit protection, as well as an integrated MR2 current-balance circuit.

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