General Description

The MAX8952 high-efficiency DC-to-DC step-down switching regulator delivers up to 2.5A of output current. The device operates from a 2.5V to 5.5V input voltage range, supporting commonly-used battery technologies in handsets. The output voltage is I2C programmable from 0.77V to 1.40V. Remote sense ensures precise DC regulation at the load. Total output error is less than ±1.5 over load, line, and temperature.

Features

♦ 2.5A Guaranteed Output Current

♦ I2C Programmable VOUT (770mV to 1.40V in 10mV Steps)

♦ Initial Accuracy ±0.5 at 1.40V Output

♦ ±1.5 Output Accuracy Over Load, Line, and Temperature (DCR ≤ 38.5mΩ)

♦ Power-Save Mode Increases Light Load Efficiency

♦ Fixed 3.25MHz PWM Switching Frequency

♦ Small 1.0µH Inductor

♦ Synchronizes to 13MHz, 19.2MHz, or 26MHz System Clock When Available

♦ Overvoltage and Overcurrent Protection

♦ Operates from 2.5V to 5.5V Input Supply

♦ Thermal Shutdown Protection

♦ On-Chip FET and Synchronous Rectifier

♦ 400kHz I2C Interface

♦ < 1µA Shutdown Current

♦ 16-Bump, 2mm x 2mm WLP Package

Applications

    Cell Phones and Smartphones

    PDAs and MP3 Players

    Tablet PCs