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The MAX77874 is a quad-phase, high-current, step-down buck regulator for CPU and GPU multicore processors. Proprietary IP provides industry-leading transient response, output voltage accuracy, high efficiency, and miniature PCB footprint.

The output voltage is I2C programmable from 0.25V to 1.30V in 5mV steps. Output current capability is 16A. Rotational phase spreading ensures high efficiency and low ripple at light loads with seamless operation across all varying loads. Turbo skip mode combines the same transient response of forced-PWM mode with light load efficiency similar to Skip mode. Soft-start and DVS ramp rates are I2C programmable and controlled through dedicated logic inputs.

The MAX77874 is offered in a 48-bump, 0.35mm pitch WLP array and is specified over the -40°C to +85°C temperature range.

Operating Range

VIN: 2.7V to 4.8V

VOUT: 0.25V to 1.30V in 5mV Steps

IOUT: Up to 16A

Fast Load-Transient Response

25mV Droop in FPWM and Turbo-Skip Modes

40mV Droop in Skip Mode

Conditions: 3.7VIN, 0.9VOUT, 200mA to 9.2A

Tight VOUTAccuracy

0.28% (max) Initial Accuracy at 0.9VOUT

1.5% (max) Over Line/Temperature

3mVP-P(typ) Ripple at All Loads

High Efficiency

89% Peak Efficiency at 3.7VIN, 0.9VOUT, 3.5AOUT

Auto Rotational Phase Spreading at Light Loads

Flexible Features

I2C Interface and EN, DVS, Active-Low IRQ Logic Pins

Programmable Soft-Start and DVS Ramp Rates

Two Thermal Alarms and POK Interrupts

Small Solution Size

37mm2Total Area with 2012-Size Inductors

41mm2Total Area with 2016-Size Inductors

2.22mm x 2.92mm WLP Package (0.35mm pitch)