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AIC2573 fiches techniques PDF

Analog Intergrations Corporation - DC/DC Controller

Numéro de référence AIC2573
Description DC/DC Controller
Fabricant Analog Intergrations Corporation 
Logo Analog Intergrations Corporation 





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AIC2573 fiche technique
AIC2573
Synchronous Buck DC/DC Controller
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
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 pro-
tection threshold from external component, fixed
threshold both undervoltage and overvoltage pro-
tection. 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 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.
Analog Integrations Corporation
Si-Soft Research Center
3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C.
TEL: 886-3-5772500
FAX: 886-3-5772510 www.analog.com.tw
DS-2573G-01 061008
1

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