General Description
The MAX17017 is a quad-output controller for ultra mobile portable computers (UMPCs) that rely on a low power architecture. The MAX17017 provides a compact, low-cost controller capable of providing four independent regulators—a main stage, a 3AP-P internal stepdown, a 5AP-P internal step-down, and a 2A source/sink linear regulator.

Features
♦ Fixed-Frequency, Current-Mode Controllers
♦ 5.5V to 28V Input Range (Step-Down) or 3V to 5V Input Range (Step-Up)
♦ 1x Step-Up or Step-Down Controller
♦ 1x Internal 5AP-P Step-Down Regulator
♦ 1x Internal 3AP-P Step-Down Regulator
♦ 1x 2A Source/Sink Linear Regulator with Dynamic REFIN
♦ Internal BST Diodes
♦ Internal 5V, 50mA Linear Regulator
♦ Fault Protection—Undervoltage, Overvoltage, Thermal, Peak Current Limit
♦ Independent Enable Inputs and Power-Good Outputs
♦ Voltage-Controlled Soft-Start
♦ High-Impedance Shutdown
♦ 10µA (typ) Shutdown Current

Applications
    1-to-4 Li+ Cell Battery-Powered Devices
    Low-Power Architecture
    Ultra-Mobile PC (UMPC)
    Portable Gaming
    Notebook and Subnotebook Computers
    PDAs and Mobile Communicators