General Description

The MAX8704 high-current linear regulator uses an external n-channel MOSFET to generate low-voltage supplies for notebook computers. This linear regulator delivers an output voltage as low as 0.5V from an input voltage as low as 1.0V. Normally, this low input requirement would make the design of such a regulator very difficult. In this application, the 5V bias supply that is always available in the system powers the MAX8704 driver and control circuitry.

Features

♦ Low-Cost, High-Current Linear Regulator

♦ External MOSFET Protection

   MOSFET Power Limit

   50mV (typ) Current Limit

   Thermal Limit

♦ 1.0V to 5.5V Input Supply Voltage

♦ 1.2V or 1.5V Preset, or Adjustable Output Voltage

♦ Power-Good (PGOOD) Open-Drain Output with 3ms Startup Delay

♦ Programmable Soft-Start

♦ Shutdown with Output Discharge

Applications

VMCH and VCCP CPU Supplies

Notebook Computers

Desktop Computers

Servers

VID Power Supplies

Low-Voltage Bias Supplies