10V Input, Quad-Phase Configurable, 3A/Phase, High-Efficiency Buck Converter

The MAX77511/MAX77711 are four-phase, 3A/phase, configurable single to quad output, step-down buck regulators for 1s/2s Li+ battery inputs. Output voltage is programmable through an I2C interface between 0.25V and 5.2V. The buck has four combinable 3A switching phases (Φ) for up to four regulated outputs. Phases are configurable to higher-current multiphase outputs: 4Φ, (3+1)Φ, (2+2)Φ, (2+1+1)Φ, or (1+1+1+1)Φ.

Six GPIOs can be purposed for I/O expansion or buck status and control. Pseudo-random spread-spectrum modulation suppresses EMI. Soft-start, soft-stop, and DVS slew times are programmable with I2C. MAX77711 offers a 300mA linear regulator.

MAX77511/MAX77711 are available in a 64-bump, 3.54mm x 3.54mm wafer-level package (WLP).

Applications

* DSLR, Mirrorless, HD Video, and Action Cameras * 2-Cell Li+/Li-ion Equipment * Notebook Computers and Robots * Embedded Microprocessors, FPGAs, or ASICs

* 3A/Phase Configurable Buck Regulator

* 3A, 6A, 9A, or 12A Output Current Capability

* 2.3V to 10V Input Voltage Range * 0.25V to 5.2V Output Voltage Range

* 0.25V to 1.3V (5mV steps) in Low-Range * 1V to 5.2V (20mV steps) in High-Range

* Pin Programmable Output/Phase (Φ) Configuration

* 4Φ, (3+1)Φ, (2+2)Φ, (2+1+1)Φ, (1+1+1+1)Φ

* High-Efficiency and Low-Heat with 2520 Inductor

* 94% Peak (3.3VOUT, 7.4VIN)

* 85% Peak (1.1VOUT, 7.4VIN)

* 1MHz Nominal Switching Frequency per Phase

* Pseudo-Random ​Spread-Spectrum Options

* Six Multi-Function GPIOs for Hardware Buck Control

* Enable, DVS, FPWM, and Power-OK

* 300mA pMOS LDO (MAX77711 Only) * Built-In Flexible Power Sequencing with Soft-Start/Stop * Protection Features

* Hard and Soft-Short Protection, UVLO, and Thermal Protection