MAX8761ETG+T

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PMIC - Voltage Regulators - Special Purpose

The MAX8761ETG+T is a simple, high-performance voltage regulator designed for application specific power management. It is for use in power supplies, analog and digital circuits, LED applications and portable electronic equipments. Its features include: high efficiency, low quiescent current, fast transient response, low output noise and low droop.

Features

• Input voltage range from 0.8V to 5.5V
• Output voltage range from 0.8V to 5.25V
• Up to 500mA output current
• High efficiency
• Low quiescent current
• Fast transient response
• Low output noise
• Low droop

Applications

• Power supplies
• Analog and digital circuits
• LED applications
• Portable electronic equipments

Working Principle

The MAX8761ETG+T is a high-performance voltage regulator that uses an advanced Variable Linear Model (VLM) pulse width modulation (PWM) control. The VLM operates in a zero-voltage switching (ZVS) mode and is used to provide high transient response and low output noise while maintaining high efficiency. The MAX8761ETG+T also employs an external NPN transistor as an output switch, which is used to minimize internal component count and provide an efficient means of controlling the output voltage of the regulator. The output voltage of the regulator is determined by a simple resistor divider network.

In operation, the VLM control signal is generated from the PWM output of the MAX8761ETG+T. The output voltage of the regulator is controlled by the duty cycle of the PWM signal. The duty cycle of the PWM signal is determined by the VLM control signal, which is adjusted according to the feedback voltage from the output voltage divider network. The MAX8761ETG+T also incorporates an internal low dropout (LDO) linear regulator which is used to provide a stable supply voltage for the internal circuitry.

Conclusion

The MAX8761ETG+T is a high performance voltage regulator designed for application specific power management. With its high efficiency, low quiescent current and fast transient response, it is ideal for use in power supplies, analog and digital circuits, LED applications and portable electronic equipments. Its advanced Variable Linear Model (VLM) pulse width modulation (PWM) control also ensures low output noise and low droop. With its features, the MAX8761ETG+T offers a cost-effective solution for all voltage regulator requirements.

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