MAX17531ATB+T

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Maxim Integrated’s MAX17531ATB+T is an integrated switching DC-DC converter that can provide up to 1.2A output current with single inductor solution. It is suitable for battery-operated or USB-powered applications that require high step-up/down battery performance while maintaining excellent efficiency and requiring no minimum inductor current. It is a high performance device that has integrated features such as a high-frequency, high-efficiency, switched-mode current booster, integrated boost voltage regulator and low on-resistance switch devices.

Application Field

The MAX17531ATB+T is a high-efficiency step-up/down voltage converter with adjustable output voltage. It can support a wide range of operating input voltages, from 2.7V up to 5.5V, providing continuously adjustable output voltage range with up to 5.5V. It is ideally suited for wearable device, consumer electronics, sensor and medical applications where battery-operated, USB-powered or miniature device end products are required.

It also features a flexible integration of low Iq boost voltage regulator, low on-resistance switches to maximize power efficiency, current booster and adjustable output voltage to provide unity power factor operation. The MAX17531ATB+T supports multiple output modes, including boost, buck and bypass. This makes it ideal for applications where the output voltage needs to be adjusted in order to save power. Additionally, it has the capability to directly drive external LEDs and is equipped with external sense pin for accurate output voltage tracking.

Working Principle

The working principle of the MAX17531ATB+T is based on the inductor boost converter topology, which makes use of a high power efficiency, high frequency, switched-mode topology. The inductor is linked to two switches (and two diode one for inrush current protection). When the switches are turned on and off, current flows through the inductor according to the voltage input and output currents.

When the switch is in its on state, the energy stored in the inductor is transferred to the output, generating an output voltage. To maintain the output voltage constant, the switch operates in a Pulse Width Modulation (PWM) mode that modulates the average output current. This modulation is achieved by controlling the duty cycle of the switch. The PWM control helps regulate and regulate the output voltage and current to the desired level.

The MAX17531ATB+T also employs a constant frequency control (CFC) loop which helps to maintain the current to the set point. The CFC loop helps in maintaining the constant current throughout the operation. This helps to conserve the power consumption and provide a longer operation time for the applications.

Also, the adjustable output voltage makes it easier for designers to maximize the performance of the MAX17531ATB+T for specific applications. The output voltage can be adjusted from 2.7V up to 5.5V, providing an all-round performance with up to 5.5V as an output voltage. This makes it an ideal device for applications that require a higher voltage level such as a USB-powered application.

Conclusion

The MAX17531ATB+T is an integrated switching DC-DC converter with adjustable output voltage. It delivers up to 1.2A output current with single inductor solution, making it ideal for battery-operated or USB-powered applications that require high step-up/down battery performance. Maxim Integrated’s MAX17531ATB+T also features a high-frequency, high-efficiency, switched-mode current booster, integrated boost voltage regulator and low on-resistance which makes it an excellent device for applications that require a higher voltage level such as a USB-powered application.

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