General Description

The MAX15108 high-efficiency, current-mode, synchronous step-down switching regulator with integrated power switches delivers up to 8A of output current. The regulator operates from 2.7V to 5.5V and provides an output voltage from 0.6V up to 95 of the input voltage, making the device ideal for distributed power systems, portable devices, and preregulation applications.

The IC utilizes a current-mode control architecture with a high gain transconductance error amplifier. The current-mode control architecture facilitates easy compensation design and ensures cycle-by-cycle current limit with fast response to line and load transients.

Features

♦ Continuous 8A Output Current

♦ Efficiency Up to 96

♦ ±1 Accuracy Over Load, Line, and Temperature

♦ Operates from a 2.7V to 5.5V Supply

♦ Adjustable Output from 0.6V to 0.95 x VIN

♦ Programmable Soft-Start

♦ Safe Startup into Prebiased Output

♦ External Reference Input

♦ 1MHz Switching Frequency

♦ Stable with Low-ESR Ceramic Output Capacitors

♦ Skip Mode or Forced PWM Mode

♦ Enable Input and Power-Good Output for Power Supply Sequencing

♦ Cycle-by-Cycle Overcurrent Protection

♦ Fully Protected Features Against Overcurrent and Overtemperature

♦ Input Undervoltage Lockout

♦ 20-Bump (4 x 5 Array), 2.5mm x 2mm, WLP Package

Applications

   Distributed Power Systems

   DDR Memory

   Base Stations

   Portable Devices

   Notebook Power

   Server Power