MAX17017

19-4121; Rev 2; 6/09 KIT ATION EVALU E L B AVAILA www.DataSheet4U.com Quad-Output Controller for Low-Power Architecture General Description Features o Fixed-Frequency, Current-Mode Controllers o 5.5V to 28V Input Range (Step-Down) or 3V to 5V Input Range (Step-Up) o 1x Step-Up or Step-Down Controller o 1x Internal 5AP-P Step-Down Regulator o 1x Internal 3AP-P Step-Down Regulator o 1x 2A Source/Sink Linear Regulator with Dynamic REFIN o Internal BST Diodes o Internal 5V, 50mA Linear Regulator o Fault Protection—Undervoltage, Overvoltage, Thermal, Peak Current Limit o Independent Enable Inputs and Power-Good Outputs o Voltage-Controlled Soft-Start o High-Impedance Shutdown o 10µA (typ) Shutdown Current MAX17017 The MAX17017 is a quad-output controller for ultramobile portable computers (UMPCs) that rely on a lowpower 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. The main regulator can be configured as either a stepdown converter (for 2 to 4 Li+ cell applications) or as a step-up converter (for 1 Li+ cell applications). The internal switching regulators include 5V synchronous MOSFETs that can be powered directly from a single Li+ cell or from the main 3.3V/5V power stages. Finally, the linear regulator is capable of sourcing and sinking 2A to support DDR termination requirements or to generate a fix...