MAX1928EUB25+

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MAX1928EUB25+ Application Field and Working Principle

The MAX1928EUB25+ is a DC-DC buck converter integrated voltage regulator with super-capacitors, operating from a 2.6V to 25V input voltage range and up to 18V output voltage range, 1.5A output current, and 0.1V load regulation accuracy. It can be used in a wide range of access point, gateway, industrial environment, automotive applications and consumer devices to power of different processors, peripherals, and wireless radios.

The MAX1928EUB25+ offers simple, single voltage supply operation and advanced, energy efficiency features with very low output current consumption and fast response time, which allows for precise and precise drive and control of peripheral logic. It also features an adjustable switching frequency from 6kHz to 500kHz, programmable loop control, and advanced current-mode control with cycle-by-cycle current limit.

The MAX1928EUB25+ utilizes a PFM/PWM control topology to ensure very low EMI and ripple, as well as high efficiency in a very small area. It additionally boasts fast transient response and quick over-current shutdown capability. The device operates in PFM mode up to 10mA of load current, and offers numerous other advanced features such as internal maximum power-point tracking, soft-start and output voltage tracking.

In order to maximise power density, the MAX1928EUB25+ uses an instant-on start-up circuitry, reducing the pulsating input current. This helps prevent hot spots that can occur during power-up while also avoiding the in-rush current normally associated with a conventional buck converter.

In summary, the MAX1928EUB25+ offers a complete regulation solution with fast transient response, low output capacitance, and EN55022 compliance for noise emitted by switching power supplies, making it the perfect choice for high-efficiency and low-noise voltage regulation in a wide variety of applications. This device is ideal for applications with high power density and fast transient response such as access points, gateways, industrial environment, automotive applications and consumer devices.

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