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MAX8649 - 1.8A Step-Down Regulator

General Description

The MAX8649 high-efficiency DC-to-DC step-down switching regulator delivers up to 1.8A of output current.

The device operates from a 2.5V to 5.5V input voltage range, making it future proof for next-generation battery technologies.

The output voltage is I2C programmable from 0.75V to 1.38V.

Key Features

  • include internal soft-start control circuitry to reduce inrush current, output overvoltage, overcurrent, and overtemperature protection. Features o 1.8A Guaranteed Output Current o I2C Programmable VOUT (750mV to 1.38V in 10mV Steps) o o o o Operates from 2.5V to 5.5V Input Supply On-Chip FET and Synchronous Rectifier Fixed 3.25MHz PWM Switching Frequency Synchronizes to 13MHz, 19.2MHz, or 26MHz System Clock when Available o Small 1.0µH Inductor o Initial Accuracy 0.5% at 1.25V Output o 2% Outp.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-4504; Rev 0; 9/09 1.8A Step-Down Regulator with Differential Remote Sense in 2mm x 2mm WLP General Description The MAX8649 high-efficiency DC-to-DC step-down switching regulator delivers up to 1.8A of output current. The device operates from a 2.5V to 5.5V input voltage range, making it future proof for next-generation battery technologies. The output voltage is I2C programmable from 0.75V to 1.38V. Fully differential remote sense ensures precise DC regulation at the load. Total output error is less than 2% over load, line, and temperature. The MAX8649 operates at a 3.25MHz fixed frequency. The high operating frequency minimizes the size of external components. The switching frequency of the converter can be synchronized to the master clock of the application.