MAX77511LEWB+T

Overview

The MAX77511LEWB+T is a quad-phase, configurable buck regulator from the MAX77511/MAX77711 series by Analog Devices/Maxim Integrated. It features four independent 3A switching phases, supporting configurable output topologies including single 12A, dual 6A, or multiple lower-current outputs. The device accepts an input voltage range of 3V to 10V and provides adjustable output voltages between 0.25V and 5.2V via I2C interface. Operating at a nominal phase frequency of 1MHz with pseudo-random spread spectrum modulation for EMI reduction, it utilizes a compact 3.54mm x 3.54mm WLP-64 package and supports a wide operating temperature range from -40°C to +125°C.

Feature Summary

• Configurable multi-phase architecture allowing flexible current distribution across four 3A phases
• Integrated pseudo-random spread spectrum modulation to suppress electromagnetic interference
• Programmable soft-start, soft-stop, and dynamic voltage scaling transition times
• Six general-purpose GPIOs for hardware control, status indication, and I/O expansion

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance and specific tape-and-reel packaging details prior to integration. Ensure that the ordering suffix matches the required quantity and handling specifications. Cross-reference datasheet revisions to confirm pinout and electrical parameter consistency with existing design files.

Selection Notes

Select this component when high current density and thermal efficiency are critical within a small footprint. The configurable phase topology allows optimization for varying load profiles without requiring multiple discrete regulators. Consider the integrated spread spectrum feature if strict EMI limits must be met in dense PCB layouts. Verify that the input voltage range aligns with the system's battery or power rail characteristics.

Part Context

This part belongs to the MAX77511 family of high-efficiency power management ICs designed for portable multimedia devices. It complements the MAX77711, which adds an integrated LDO, while the MAX77511 focuses purely on the buck regulation capabilities. The series represents Maxim Integrated's approach to consolidating complex power delivery networks into single-package solutions for space-constrained applications.

Replacement Considerations

The MAX77711LEWB+T serves as a functional substitute offering identical buck regulation with the addition of an integrated 300mA PMOS LDO. Designers requiring only the buck converter functionality should verify that the extra LDO does not impact board space or cost constraints. No other direct cross-model replacements are documented in public sources.