MAX1951AESA+T

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The MAX1951AESA+T is a high-performance, low-noise, synchronous buck voltage regulator with precisi on output voltage. It is designed to provide a small, low-noise, easy-to-use point-of-load (POL) solution. This integrated device includes a fixed output voltage buck converter, amplifier and voltage reference, and low-noise linear regulators. The MAX1951AESA+T is intended for applications requiring a 3.3V output with input voltages from 2.5V to 5.5V and output currents up to 2A.

Application Field :

The MAX1951AESA+T is ideal for systems requiring high-performance, low-noise power solutions. Typical applications include powering processors, ASICs, and other logic, as well as communications systems and server blades.

Working Principle :

The MAX1951AESA+T is a synchronous buck voltage regulator with a selectable output voltage of 1.8V or 3.3V. The input range is from 2.5V to 5.5V. The high-efficiency switching regulator contains a high-side and a low-side switch and offers up to 95% efficiency. The device includes a P-channel MOSFET (PSMD1) and an N-channel MOSFET (NSMD2) configured in a synchronous buck configuration. The switching frequency is adjustable to 200kHz with the Oscillator Frequency pin (FS). The current sense resistor (RS) provides the feedback loop in order to maintain a constant output voltage. The integrated low-noise linear regulator is designed to provide a clean, ripple-free output voltage.

The MAX1951AESA+T is supplied in the space-saving 5-pin SOT-23 package, which reduces board space and assembly compliance costs. The device also features shutdown mode, soft-start, current-limit protection, and overvoltage protection for enhanced system reliability.

The MAX1951AESA+T is a synchronous buck voltage regulator that provides a high performance, low-noise power solution for a variety of systems. Its features make it an ideal choice for powering processors, ASICs, and other logic, as well as communications systems and server blades.

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