S-8521C28MC-BTNT2G

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The S-8521C28MC-BTNT2G is a synchronous buck Regulator controller IC designed specifically to provide voltage regulation within the power management integrated circuits (PMIC) segment. Mainly used as a DC-DC switching controller, the S-8521C28MC-BTNT2G boasts power efficiency levels of up to 94% and is versatile enough to support multiple topologies.

The device is able to regulate voltages ranging from 1.8V to 28V for output voltage accuracy of approximately ±1%. Its switching frequency range is also extensive, reaching up to 1MHz with an extensive range of external components, meaning that the S-8521C28MC-BTNT2G can be tailored to different system requirements.

The S-8521C28MC-BTNT2G is able to support several PMIC system design requirements, offering multiple on-chip innovations to reduce complexity and BOM cost. This includes a quad Level Shift PWM input, allowing users to access a variety of preset and adjustable PWM frequencies as well as a start PWM count and auto-control of the PWM sequence, streamlining system operations.

The S-8521C28MC-BTNT2G features an external compensation, enabling users to adjust the system’s gain and phase margin in order to optimise the efficiency and stability of the voltage regulator. This ensures that the S-8521C28MC-BTNT2G hardware and components are working together in harmony, contributing to better thermal performance. The device also has an onboard bootstrap diode, which handles the power imbalance between the MOSFET’s gate and source, minimising the number of components required, once again reducing BOM cost and system complexity.

The S-8521C28MC-BTNT2G boasts comprehensive protection features, including over-temperature protection, over-current protection (OCP), under-voltage lockout (UVLO), and reverse current protection. The device also supports load disconnect and short-circuit protection, making it an ideal solution in applications where reverse current is a problem. With all of these protection features, the S-8521C28MC-BTNT2G ensures that system operations remain safe and efficient.

In addition to its robust feature set, the S-8521C28MC-BTNT2G is also available in a range of packages, accommodating space constraints. The device is available in a small 12-pin MAPSOP package for cost optimisation, as well as an industry-standard 8-pin SOP and QFN packages. With this extensive range of packages, the S-8521C28MC-BTNT2G provides users with flexibility and a reduction in system complexity.

The S-8521C28MC-BTNT2G is an ideal Voltage Regulator for Battery Management Systems, Industrial Switched Mode Power Supplies, and Automotive, Computing and Mobile Applications. With its low voltage regulation, wide switching frequency range, extensible set of features, and easy external component combination options, the S-8521C28MC-BTNT2G is the perfect choice for system designers wanting to reduce complexity, cost, and get the most out of their system.

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