MAX77711BEWB+T

Overview

The MAX77711BEWB+T is a four-phase, 3A-per-phase configurable step-down converter designed for 1s/2s lithium-ion battery inputs. It features an integrated 300mA PMOS low-dropout regulator (LDO) and supports multiple output configurations including single 12A or multi-output setups via I2C programming. The device operates with a 3V to 10V input range and offers programmable soft-start, soft-stop, and dynamic voltage scaling. It utilizes pseudo-random spread spectrum modulation to reduce electromagnetic interference and includes six general-purpose I/O pins for hardware control.

Feature Summary

• Configurable four-phase architecture supporting up to 12A total output current through various phase combinations
• Integrated 300mA PMOS LDO with active discharge capability for rapid output termination
• Pseudo-random spread spectrum modulation for enhanced electromagnetic interference suppression
• Programmable soft-start, soft-stop, and dynamic voltage scaling via I2C interface

Applications

• DSLR cameras
• HD video mirrorless cameras
• Action photography devices

Procurement Notes

Verify the specific suffix BEWB against official Analog Devices documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with 1s/2s Li+ battery systems and validate thermal requirements for the WLP-64 package in high-current applications.

Selection Notes

Select this component when a compact solution for high-current, multi-output power delivery from dual-cell lithium batteries is required. The integrated LDO simplifies bias supply design, while the configurable phases allow optimization for efficiency versus board space constraints.

Part Context

This part belongs to the MAX77511/MAX77711 family of four-phase buck converters. The MAX77711 variant specifically distinguishes itself by including an integrated PMOS LDO, whereas the MAX77511 does not. Both share identical switching characteristics and configuration options.

Replacement Considerations

MAX77511BEWB+T is a direct substitute if the integrated LDO functionality is not required.