LTC3619BIDD#PBF

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The LTC3619BIDD#PBF is a switch-mode power supply (SMPS) controller and integrated circuit that combines synchronous buck and flyback controllers with an LDO controller to create a complete triple output PMIC solution. The LTC3619BIDD#PBF can be used in applications such as computing, industrial, and communications, as well as automotive and consumer applications where efficiency and reliability are key design objectives. The LTC3619BIDD#PBF is part of the DC-DC switching regulator product family from Linear Technology Corporation.

The LTC3619BIDD#PBF includes three integrated controllers, one of which is a buck controller, one a flyback controller, and the third an LDO controller, providing multiple output voltages with one device. The device has an input voltage range from 2.2V to 5.5V and seamlessly transitions between the buck and flyback controllers based on the desired output. This provides the LTC3619BIDD#PBF with adjustable output voltage and current, adjustable frequency, low noise, fast loop response, and fast transient response. It also has integrated soft start and current limit protection, thermal shutdown, short circuit protection, and programmable under-voltage lockout.

The buck controller provides a constant output current and is designed for systems that require the ability to regulate multiple outputs while providing high efficiency operation. The LTC3619BIDD#PBF buck controller is capable of supplying up to 3A of output current and can operate at frequencies of up to 1MHz, allowing for high efficiency designs with space and cost savings compared to traditional transformer-based solutions. The LTC3619BIDD#PBF buck controller can be used for applications such as consumer electronics and communications, as well as for power sequencing, sequencing multiple supplies, or direct sequencing of multiple supplies into a single board.

The flyback controller provides high efficiency for low power applications such as powering FPGAs, microprocessors, or ASICs with multiple outputs. The flyback controller is capable of switching at frequencies of up to 500kHz, allowing it to provide high efficiency in a small size and low noise operation. It also has integrated short circuit protection and current limit protection. The LTC3619BIDD#PBF can provide up to 8A of current at a total output power of up to 60 watts.

The LDO controller provides a low noise, low dropout, low current output for sensitive analog circuits. The LDO controller is capable of providing an adjustable current of up to 3A with a wide output voltage range from 0.7V to 5.5V. The LDO controller also has a programmable shutdown input which can be used to turn off the device in low power systems.

The LTC3619BIDD#PBF has a digitally programmable output voltage and current, adjustable frequency, low noise, fast loop response, and fast transient response which make it an ideal solution for high power, high efficiency, and reliable triple output PMIC applications. The device is designed to be fast, efficient, and reliable in a wide range of applications. Additionally, the integrated device simplifies designs by providing all three controllers in a single package. The device also has a wide range of safety features, such as short circuit protection, current limit protection, and thermal shutdown, enabling designers to create robust, reliable, and safe designs.

In summary, the LTC3619BIDD#PBF is an efficient and versatile solution for triple output power supply applications. The device includes a buck controller, flyback controller, and LDO controller, providing multiple outputs with one device. The device is suitable for a range of applications including computing, industrial, automotive, and consumer, and is designed for efficiency, reliability, and safety.

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