MAX77511AEWB+T

Overview

The MAX77511AEWB+T is a four-phase, 3A-per-phase configurable buck regulator designed for single-cell or two-cell lithium-ion/polymer battery inputs. It features an input voltage range of 3V to 10V and supports programmable output voltages from 0.25V to 5.2V via I2C. The device integrates six GPIOs for hardware control and offers pseudo-random spread spectrum modulation to reduce electromagnetic interference. It operates within a temperature range of -40°C to +125°C and utilizes a compact 3.54mm x 3.54mm WLP-64 package.

Feature Summary

• Configurable multi-phase architecture allowing flexible current distribution across four phases
• Integrated pseudo-random spread spectrum modulation for electromagnetic interference suppression
• Programmable soft-start, soft-stop, and dynamic voltage scaling transition times
• Six general-purpose input/output pins for hardware control and status monitoring

Applications

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

Procurement Notes

Verify the specific suffix 'AEWB' against official Analog Devices documentation to confirm temperature grade and packaging specifications. Ensure compatibility with required inductor types and external component values before integration. Cross-reference the datasheet revision date to validate parameter accuracy. Confirm availability status through authorized distributors as supply conditions may vary.

Selection Notes

Select this component when high efficiency and low thermal dissipation are critical for portable imaging devices. The configurable phase topology allows optimization for varying load currents without increasing footprint. Consider the integrated GPIO functionality if hardware-based control signals are preferred over software-only management. Verify that the input voltage range aligns with the battery configuration in the target system.

Part Context

This part belongs to the MAX77511/MAX77711 family of power management ICs. While the MAX77711 variant includes an integrated 300mA PMOS LDO, the MAX77511 does not. Both share the same core buck converter architecture and pinout compatibility for the switching stages. The family is optimized for applications requiring multiple regulated rails from a single battery source.

Replacement Considerations

The MAX77711AEWB+T serves as a functional substitute if an integrated LDO is required. Other members of the MAX77511 series may offer different current ratings or packaging options. Verify pin-to-pin compatibility and electrical parameters before substitution.