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MAX15029ATB/V+T Application Field and Working Principle

Introduction

The MAX15029ATB/V+T is a highly integrated, wide input voltage range, and low dropout linear regulator IC suitable for use in a wide range of applications. It is a part of the MAX15029 family of PMIC – Voltage Regulators – Linear products from Maxim Integrated, and is designed for a wide input voltage range of 2.3V to 6.5V. Its adjustable low dropout voltage of just 150 mV makes it ideally suited to applications where low input voltages must be regulated, such as automotive, and battery-powered applications.

Features and Benefits

The MAX15029ATB/V+T features an adjustable output voltage range between 0.5V and 5.5V and a programmable 5A/15A peak current capability, with an adjustable voltage tolerance (up to 0.5%), making it highly suited for applications such as automotive, battery, and charger applications.

The MAX15029ATB/V+T also features a low dropout voltage of 150 mV, making it ideal for applications requiring low input voltages. The device also provides low quiescent current of 5.65 μA, which is further reduced to 0.39 μA in shutdown mode. This improves battery life, especially in applications running on batteries.

The device is available in various packages, such as the 8-pin TSSOP, 8-pin HTSSOP, and 4-pin WSON packages, which is suited for a wide range of applications in different form factors. It also features over temperature, input under voltage lockout, and over current protection, making it highly reliable.

Applications

The MAX15029ATB/V+T is ideally suited for applications in the automotive, battery-powered, and charger applications. It is suitable for a wide range of applications, such as LED lighting, power converters, power supplies, high current loads, and power controllers. It can also be used in automotive infotainment systems, DC-DC converters, and general-purpose power supplies.

Working Principle

The MAX15029ATB/V+T is a highly integrated linear regulator IC that is designed to efficiently regulate the input voltage to an adjustable output voltage. It operates by sensing the voltage at the output and adjusting the internal current source and voltage reference to maintain the output voltage. The device provides a high precision output voltage due to its programmable voltage tolerance.

The MAX15029ATB/V+T operates in two modes; active mode and shutdown mode. In the active mode, the device operates to regulate the output voltage with low dropout voltage and low quiescent current. In the shutdown mode, the device is disabled, reducing the quiescent current to nearly zero.

The MAX15029ATB/V+T also features an adjustable peak current limit, enabling it to protect the device from current overloads. The peak current limit is set using a resistor connected to the DPMON pin. When the load current reaches the peak current limit, the device switches to the current limiting mode, reducing the output voltage.

Conclusion

The MAX15029ATB/V+T is a highly integrated, wide input voltage range, and low dropout linear regulator IC suitable for use in a wide range of applications. It is designed for a wide input voltage range of 2.3V to 6.5V and a programmable peak current capability of 5A/15A. It provides low quiescent current of 5.65 μA and an adjustable low dropout voltage of just 150 mV. It is suitable for applications in the automotive, battery-powered, and charger applications. The working principle of the MAX15029ATB/V+T is based on the adjustable current source and voltage reference to maintain the output voltage.

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