AIC2573
Synchronous Buck DC/DC Controller
FEATURES
High Efficiency: Up to 93% Single-Powered N-channel MOSFETs Synchron...
AIC2573
Synchronous Buck DC/DC Controller
FEATURES
High Efficiency: Up to 93% Single-Powered N-channel
MOSFETs Synchronous 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
APPLICATIONS
Information Appliances LCD TV Graphic Card Telecomm Equipments
GENERAL 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 protection threshold from external component, fixed threshold both under
voltage and over
voltage protection. LDO is built in to provide AIC2573 logic power source, and application circuit just uses one single power supply.
A multifunction pin (COMP) allows external compensation 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.
Analog Integrations Corporation
Si-Soft Research Center 3A1, No.1, Li-Hsi...