MAX20003ATPA/V+TC2

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The MAX20003ATPA/V+TC2 buck–boost DC/DC converter is a versatile device designed for applications that require output voltages to stay within a regulated range regardless of input voltage variations. This device can be configured as a constant-voltage buck, in which case the input voltage is regulated to a lower value than the output voltage; a constant-voltage boost, in which case the output voltage is regulated to a higher value than the input voltage; or it can be used as a buck/boost configuration, in which case the input and output voltages can either be of the same polarity or opposite polarity. The device is capable of producing an output voltage with an accuracy of ±1% over a wide range of input and output voltage conditions. It also features an adjustable frequency, allowing it to maximize efficiency at the desired switching frequency.

The MAX20003ATPA/V+TC2 integrates 4 voltage detectors into the integrated circuit, which decreases external component count significantly and simplifies the circuit design. A programmable frequency allows the user to configure a desired operating frequency for the converter. The low output current ripple allows for noise sensitive applications to be powered with this device. The device is offered in an 8-pin LLP package which can fit into a small system space. All these features make the MAX20003ATPA/V+TC2 an ideal Buck-Boost DC/DC converter for a wide range of applications from low to high power.

Applications for this device include energy harvesting, point-of-load (POL) regulators for mobile and home applications, industrial motor controls and digital power supplies. The device is capable of providing adjustable output voltages from 0.8V to 5.5V in 20mV steps. The integrated low output current ripple allows this device to be used in noise sensitive applications without any noise filtering components. The device also includes thermal protection and overcurrent protection functions, which ensures the device is protected from possible shorts and over temperature conditions.

The MAX20003ATPA/V+TC2 is a synchronous switch-mode DC/DC converter, using the buck-boost arrangement to maintain a regulated output voltage across a range of input voltage sources. It requires a single versus dual inductor solution with high efficiency due to the constant on-time, fixed frequency control scheme. It features a 0.8V to 5.5V output range, selectable switching frequency up to 1MHz and surpasses requirements of fast transient response. This allows the device to respond rapidly to changing input and output conditions, resulting in superior power conversion efficiency and stability when compared to other traditional solutions.

The integrated driver allows user to configure the switching frequency, peak current limit and valley current limit. The total conversions loss of the device is minimized and a wide range of output loads can be driven reliably and consistently. The peak current and valley current limits are adjustable to optimize performance and minimize leakage current regardless of output load. This allows the device to maintain an efficient operation across a range of input and output voltage conditions.

Overall, the MAX20003ATPA/V+TC2 is a high performance, ultra-compact Buck-Boost DC/DC converter with programmable frequency and a single- versus dual-inductor solution. It is a versatile device ideal for applications that require a wide range of output voltages, fast transient response and high efficiency. This device is a cost effective solution to many power conversion designs.

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