MAX8520ATP/V+

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MAX8520ATP/V+ Application Field and Working Principle

PMIC or Power Management ICs are responsible for the control and distribution of electrical power in modern electronic devices. The MAX8520ATP/V+ is a specialized PMIC designed to offer excellent efficiency, performance and value for devices such as smartphones, tablets and other high-end consumer electronics.

The MAX8520ATP/V+ is a two-phase, synchronous-rectification buck converter that delivers up to 8.5A of continuous output current. It has a wide input voltage range of up to 17V, and its high efficiency PWM controller offers up to 95% efficiency for consumer applications. It supports multiple sleep modes and implements a wide range of protection functions to ensure safe operation.

The MAX8520ATP/V+ is designed for low to medium power applications and boasts low quiescent current, precise output current sensing, and a programmable power stage that allows for infinite combinations of output voltage and current. It also supports external voltage and current monitoring, as well as programmability for design flexibility.

The Working Principle

The MAX8520ATP/V+ is based on the synchronous rectification buck converter topology. In this topology, input power is converted to a regulated output voltage using a pair of power switches and an energy storing inductor. The two power switches (called high-side and low-side) control the current flow while the inductor stores energy in between power switch operations to smooth the output.

The MAX8520ATP/V+ features a programmable PWM controller that enables precise control and regulation of the output voltage. This PWM controller reads the output voltage and adjusts the duty cycle of the power switches to maintain the correct output voltage. The MAX8520ATP/V+ can also sense the output current to maximize efficiency by reducing the current flowing through the system at low loads and reducing the power loss due to the switching frequency at higher loads.

The MAX8520ATP/V+ also features multiple protection functions to ensure safe operation. These include an over-current protection, an under-voltage lockout, an over-temperature protection, and a current foldback that reduces the output current to a safe level in case of an overload.

The Application Field

The MAX8520ATP/V+ can be used in a variety of applications such as smartphones, tablets, and other high-end consumer electronics. It is ideally suited for battery-powered devices as its low quiescent current allows for the highest level of efficiency. The device’s high output current capability, wide input voltage range, and programmable power stage make it perfectly suited for applications requiring high output power and high efficiency along with the flexibility to adjust the output voltage and current for optimal performance.

In addition to its excellent efficiency, the MAX8520ATP/V+ also offers robust protection features, including an overcurrent protection, an undervoltage lockout, an over-temperature protection, and a current foldback, which enable reliable and safe operation in all conditions.

Overall, the MAX8520ATP/V+ is an excellent PMIC choice for a wide range of high-end applications with demanding requirements on efficiency, performance and reliability.

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