LT1534IS#TRPBF

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LT1534IS#TRPBF is a high-efficiency, synchronous, brushless, DC-DC switcher that offers the power of dual conversion and flexibility in a small integrated package. By combining both synchronous buck and boost functions in one single device, the LT1534IS#TRPBF is an ideal solution for a wide range of applications, including powering an ASIC or FPGA, as well as providing a hybrid power system. It is a robust, cost-effective, and efficient solution for various system needs.

Application Field of LT1534IS#TRPBF

The LT1534IS#TRPBF provides a wide input voltage range of 2.5 V to 20 V, and its output voltage range is adjustable from 0.6 V to 6.0 V. This makes it suitable for a variety of applications, including consumer electronics and industrial products. With its wide input voltage range and adjustable output voltage, the LT1534IS#TRPBF is an ideal choice for applications which need to step-down and/or step-up input voltage to a specific voltage level. In addition, its high efficiency and low output voltage ripple make it an excellent choice for providing a stable output voltage, which is critical for powering sensitive circuits.

The LT1534IS#TRPBF is suitable for applications such as network points of presence (NPoPs), telecoms and wireless base stations, wireless charging and access points, laptop PCs, point of load (PoL) for ASICs, SDRAM and battery powered devices, and navigation systems. Additionally, it can be used in high-end mobile phones, digital video and audio equipment, home electronics, instrumentation and medical devices, portable devices, and HDD/SDD power systems.

Working Principle of LT1534IS#TRPBF

The LT1534IS#TRPBF is based on a synchronous PWM switching topology that uses two N-channel MOSFETs to obtain higher efficiency. The topology is designed using state-of-the-art paraLLEL MOSfETs (Parallel MOSFETs) to reduce gate charge and energy loss, and to facilitate high efficiency in a small package. It integrates a dual output converter along with two internal voltages and also enables configurable switching frequency and dead time.

The device comprises of two N-channel MOSFETs connected in parallel between the input source and the output load. The two MOSFETs operate in a synchronous buck-boost mode and their gates are driven by a fixed voltage level. The turn-on timing of the switches is regulated by an internal oscillator, and the serial data interface that is used to program the functional parameters.

When the MOSFETs switch on, current flows from the input to the output and is regulated by controlling the gate voltage of the respective MOSFETs. When the MOSFETs switch off, the polarity of the current reverses, creating a negative voltage. This reverse voltage is used by the device to activate the other MOSFET and to charge the output inductor. The LT1534IS#TRPBF uses an adaptive slew rate control to control the slope of the output voltage and is also equipped with a wide range of protection features.

This adaptive slew rate control helps reduce the total output voltage ripple and improves the power efficiency, thus enhancing the overall performance of the system. In addition, the device is equipped with two voltage channels, output voltage tracking, and soft-start features to ensure an ease of implementation.

Conclusion

The LT1534IS#TRPBF DC-DC switching regulator is a high-efficiency, synchronous buck-boost device that is suitable for a variety of applications. It provides a wide input voltage range and adjustable output voltage, and its advanced control techniques, such as adaptive slew rate control and voltage tracking, ensure a smooth transition and high power efficiency. Its integrated protection features and compact size makes it a robust and efficient solution for various system needs.

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