LT1370HVCT7#PBF

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LT1370HVCT7#PBF Application Field and Working Principle

The LT1370HVCT7#PBF is an advanced charge pump DC-DC converter that combines high voltage operation and output regulation from a tiny 3mm x 3mm QFN package. The device is part of Linear Technology’s PMIC portfolio and is classified as a Voltage Regulator, DC-DC Switching Regulator. This makes the LT1370HVCT7#PBF ideal for applications that require step up and boost voltage conversion for power sensitive applications.

The LT1370HVCT7#PBF is current mode controlled and can deliver up to 250mA of output current. The device includes a wide input voltage range of 1.8V to 16V, adjustable output voltage up to 22V and switching frequencies ranging from 100kHz to 1MHz. This makes the LT1370HVCT7#PBF an ideal solution for high voltage DC-DC conversion in battery-powered systems, voltage conversion for handheld multimedia devices and portable medical systems.

LT1370HVCT7#PBF Working Principle

The LT1370HVCT7#PBF uses a flyback architecture, with two switches and one current source. In this arrangement, the two switches alternate their conductive state, meaning they switch on and off in sequence. When the switch that is connected to the supply voltage closes, energy is stored in the inverting side of the inductance. When the switch at the output opens, the energy stored in the inverting side of the inductance is released to supply the load at the output. This process is repeated, resulting in a constant output voltage.

LT1370HVCT7#PBF Features and Benefits

The LT1370HVCT7#PBF can generate up to 22V from a 1.8V to 16V input voltage, depending on the output voltage setting. Due to its current mode control and minimum on-time, the device is able to deliver a high efficiency over a wide range of input and output voltages. The switching frequency is adjustable, ranging from 100kHz to 1MHz, and is further enhanced by the feature of selecting LFOK or Burst Mode operation.

The LT1370HVCT7#PBF includes cycle-by-cycle current limit, over-temperature protection and soft-start to protect the device against excessive load and thermal issues. The device also includes an enable pin, which is used to reduce the power consumption in standby operation. The LT1370HVCT7#PBF is housed in a tiny 3mm x 3mm QFN package, making it ideal for today’s small form factor applications.

Conclusion

The LT1370HVCT7#PBF is a highly integrated, efficient, and easy to use DC-DC converter. It provides an adjustable output up to 22V, with a wide input voltage range of 1.8V to 16V. Its features, such as current limit, over-temperature protection and soft-start, make the LT1370HVCT7#PBF an ideal solution for high voltage DC-DC conversion in battery-powered systems, voltage conversion for handheld multimedia devices and portable medical systems.

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