General Description

The MAX17083 is a fixed-frequency, current-mode, step-down regulator optimized for low-voltage, low power applications. This regulator features dual internal n-channel MOSFET power switches for high efficiency and reduced component count. External Schottky diodes are not required. An integrated boost switch eliminates the need for an external boost diode. The internal 25mΩ low-side power MOSFET easily supports continuous load currents up to 5A. The MAX17083 produces an adjustable 0.75V to 2.7V output voltage from the system’s 3.3V or 5V input supply.

Features

♦ Fixed-Frequency, Current-Mode Controller

♦ 2.4V to 5.5V Input Range

♦ Internal 5A Step-Down Regulator

♦ Internal BST Switch

♦ Fault Protection: Undervoltage, Overvoltage, Thermal, Peak Current Limit

♦ Enable Input and Power-Good Output

♦ Voltage-Controlled Soft-Start

♦ High-Impedance Shutdown

♦

Applications

Low-Power Architectures

Ultra-Mobile PCs

Netbook and Nettop PCs

Portable Gaming

Notebook and Subnotebook Computers

PDAs and Mobile Communicators