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.
The MAX8704 includes a fixed current limit and an
adjustable power limit to protect the external MOSFET
from overheating. Additionally, the MAX8704 includes
an internal thermal limit to prevent damage to the controller
and provide remote thermal protection for the
external MOSFET.
The MAX8704 features an adjustable soft-start function
and generates a delayed power-good (PGOOD) signal
that signals when the linear regulator is in regulation.
The MAX8704 is available in a 10-pin µMAX® package.
Download
E-Mail