FSL146MRBN

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The FSL146MRBN is a unipolar high-frequency switching regulator, which belongs to the PMIC (Power Management Integrated Circuit) family, more specifically, the AC DC converters, offline switchers families.

The regulator has a wide range of application fields that are suited for many operations, such as HDTVs, displays, handheld devices, and DLP applications. Its low-voltage operating range allows users to control 3.3V to 5V power supplies. This complemented with its low Standby & Off-Mode supply current (10uA & 0.02uA respectively) makes this regulator an ideal product for low-power and energy-efficient applications.

The FSL146MRBN features a wide output range that covers 2.5V to 24V (max), a wide input voltage range of 4.75V to 40V, and a stability-enhancing temperature range of -40°C to 125°C.

In terms of its working principle, the FSL146MRBN uses a Vibrator-Type switching regulator that operates in the PWM (Pulse Width Modulation) mode. It is an unipolar device, meaning that it regulates one power source only – the only thing that is taken into consideration when regulating the output voltage is the load current. This makes the regulation process simpler, faster and more reliable because there is only one input parameter to control.

The FSL146MRBN features built-in short-circuit protection and thermal performance distribution control which provide additional safety measures in the case of unexpected events.

Apart from its versatile range of usage, the FSL146MRBN also offers high efficiency of up to 98%. When coupled with its low standby current, it is an excellent power solution for high-power and/or low-voltage devices. The extended temperature range of -40°C to 125°C makes it a great choice for usage in demanding environments.

The high frequency of the FSL146MRBN switching regulator allows for a smaller overall size, which is beneficial in applications where space is a constraint (e.g. hand-held devices). Additionally, the device is equipped with integrated EMI filters that provide improved electromagnetic compatibility, further reducing the device’s overall size.

All in all, the FSL146MRBN is a unipolar high-frequency switching regulator geared for low-power and high-power applications. It features a wide range of application fields, low power consumption, high efficiency, extended temperature range, short-circuit protection, and integrated EMI filters. Its working principle relies on the Vibrator-Type switching regulator, which operates in the PWM mode.

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