LT3483EDC#TRMPBF

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LT3483EDC#TRMPBF Application Field and Working Principle

PMIC – Voltage Regulators – DC-DC Switching Regulators

The LT3483EDC#TRMPBF (LT3483EDC#TRMPBF for short) is a high-frequency, synchronous, buck-boost DC-DC switching regulator from Linear Technology Corporation. Specifically designed for applications such as portable electronic devices, it offers up to 3.3A of continuous output current. The LT3483EDC#TRMPBF differs from other DC-DC buck-boost products in its constant frequency modulation, giving it the ability to accurately track a wide input voltage range.

The LT3483EDC#TRMPBF can precisely regulate its output voltage, while offering a highly efficient power Conversion. Its unique synchronous rectified, constant frequency modulation provides a wide input voltage operation range, and high output current capability. The LT3483EDC#TRMPBF is available in a wide variety of packages to accommodate a variety of applications.

The LT3483EDC#TRMPBF synchronous buck-boost switching regulator is the ideal choice for applications with the need for a wide input voltage operating range, high efficiency, and precise output voltage control. It features a 48V internal start-up voltage, 0.6V voltage reference, and 2.5mΩ/7mΩ (E/N) channel on-resistance.

Application Field

The LT3483EDC#TRMPBF is ideally suited for powering a range of portable electronic devices, such as mobile phones, laptops, and other battery-powered devices. Its ultra-conduction performance makes it ideal for applications where high efficiency, short time-to-full-load steps, low noise, and precise output voltage regulation are critical. Its wide input voltage operating range makes it an ideal choice for applications where input voltage is prone to fluctuate.

The LT3483EDC#TRMPBF is also an excellent choice for applications that require supplying multiple devices from one power source. Its synchronous buck-boost switching architecture allows for simultaneous powering of devices with a wide range of voltages, from 3.3V to 30V. By using this technique, multiple devices can be provided with consistent and reliable power over an extended period. It is also well-suited for powering large FPGAs (Field Programmable Gate Arrays) and other digital components, providing stable and accurate power at all times.

Working Principle

The LT3483EDC#TRMPBF synchronous buck-boost switching regulator utilizes a high-frequency, constant frequency modulation pump in order to regulate its output voltage accurately and efficiently. It can precisely control the output voltage while also offering high efficiency (> 90%). During a step down conversion, the low-side P-channel MOSFET (PFET) is switched on and off by the controller. This creates a constant current circuit, and the voltage regulator regulates the output voltage by controlling the average current through the PFET’s resistance. For a step up conversion, the high-side PFET is switched on and off, and the voltage regulator regulates the output voltage by controlling the average current through the PFET’s resistance.

The LT3483EDC#TRMPBF’s advanced synchronous rectifier design allows for low-noise operation and improved energy efficiency. This is achieved by using a synchronous rectifier on the High-Side PFET, instead of a Schottky diode. As the PFET and the synchronous rectifier are both optimized for low resistance, the efficiency increases significantly.

Conclusion

The LT3483EDC#TRMPBF is a high efficiency, synchronous buck-boost switching regulator from Linear Technology Corporation. Its wide input voltage operating range, constant frequency modulation, and ultra-small size make it an ideal choice for powering a range of portable electronic devices. Its synchronous buck-boost switching architecture allows for simultaneous powering of devices with a wide range of voltages, from 3.3V to 30V. By using this technique, multiple devices can be provided with consistent and reliable power over an extended period. It is also well-suited for powering large FPGAs and other digital components, providing stable and accurate power at all times.

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