AIC2573

Features:

High Efficiency: Up to 93%

Single-Powered N-channel MOSFETs Synchro-nous Driver

Wide Input Voltage Operation Range 4.5V to 25V

Accurate Internal temperature compensated 0.8V Bandgap Reference Voltage with 1% precision.

Fast Transient Response

- Duty cycle 0% to 95 %

PWM Operation at 300KHz

Built-in Soft-Start function.

Over Voltage Protection with Latch Up.

Under Voltage Protection at Vout with Latch Up.

Over Current Protection.

Package: MSOP10

Application

Information Appliances

LCD TV

Graphic Card

Telecomm Equipments

Pinout






Description

The AIC2573 is a voltage mode synchronous buck PWM controller that drives external N-channel power MOSFET using a 300kHz fixed frequency architecure. This device is capable of producing an output voltage as low as 0.8V. It uses external divider to adjust output voltage with the exact right line and load regulation.
The AIC2573 provides adjustable overcurrent pro-tection threshold from external component, fixed threshold both undervoltage and overvoltage pro-tection. LDO is built in to provide it logic power source, and application circuit just uses one single power supply.
A multifunction pin (COMP) allows external com-pensation for optimum load step response and shutdown. Soft start can also be implemented with this pin to properly sequence supplies.
The AIC2573 is available in space-saving 10 pins MSOP package