MAX14720DEWA+T

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MAX14720DEWA+T is a power management integrated circuit (PMIC) for advanced microprocessor-based systems. It is one of the many voltage regulators available and is a type of linear and switching power supply. Its main features are: low quiescent current, wide input voltage range and low dropout voltage. It is commonly used for power conditioning and regulation of microprocessor-based systems such as mobile phones, personal digital assistances (PDAs), tablet PCs and Internet of Things (IoT) devices.
Features and Benefits
The MAX14720DEWA+T offers numerous benefits to users, including:
• Low quiescent current (3.3mA ± 1.5mA) which is up to 75% lower than competing devices.
• 95% efficiency over a wide input voltage range (2.7V to 5.5V).
• Extremely low dropout voltage (200mV @ 250mA output).
• Flexible operation with external power transistors, allowing easy configuration of the regulator\'s output voltage.
• Easy to use, integrated power-on reset (POR) circuit which holds the system in reset until the output voltage is within a pre-defined range.
• Accurate output voltage regulation (±1% @ 250mA output).
• Advanced protection features such as over-current, short-circuit and thermal protection.
• Safe operating temperature range (–40°C to +125°C).
Working Principle
The MAX14720DEWA+T PMIC consists of a low quiescent current step-down linear regulator and a low-dropout (LDO) switching regulator. It is capable of supplying up to 1.2A continuous current to a load, with an input voltage of up to 5.5V. The linear regulator generates a fixed output voltage that is set by an external resistor divider. The switching regulator is used to generate an adjustable output voltage (up to 3.3V), and is controlled by a logic signal from an external controller.
The linear regulator is a linear power converter, that operates by varying the duty cycle of an internal NMOSFET switch. The output voltage is set by adjusting the duty cycle of the switch, allowing it to drop less than 200mV @ 250mA output. The operation of the LDO switching regulator is slightly different. It uses an internal PWM controller to generate a clock signal, which when combined with an external synchronous NMOSFET, creates a regulated output voltage. This output voltage can be adjusted by changing the voltage of the external control signal.
Application Field
The MAX14720DEWA+T PMIC was designed to provide a reliable power supply for microprocessor-based systems, including mobile phones, PDAs, tablets and IoT devices. Its low quiescent current, wide input voltage range and low dropout voltage make it ideal for these applications. It can be used as a power conditioning and voltage regulator in products such as mobile phones, PDAs and tablet computers, as well as IoT devices such as wearables, home automation systems and industrial automation systems. Furthermore, the MAX14720DEWA+T is compatible with a variety of external power transistors, allowing for further customization of its output voltage and current.
In summary, the MAX14720DEWA+T is a PMIC that offers a wide range of features, such as low quiescent current, wide input voltage range, low dropout voltage and excellent efficiency. It is designed as a power conditioning and voltage regulator for microprocessor-based systems, including mobile phones, PDAs, tablet PCs and IoT devices.

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