AIC1401
PWM Step-Down Switching Controller with
Shutdown
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FEATURES
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DESCRIPTION
The AIC1401 is a high efficiency, PWM step-
down, voltage-mode, switching controller. It is
suitable for IA, Notebook, LCD PC and LCD
monitor main power applications.
The built-in high voltage CMOS driver drives an
external N-channel MOSFET for replacing the
higher cost P-channel MOSFET in a standard
buck topology.
The 200KHz switching frequency allows using
smaller external components while maintaining
high
conversion
ensures
efficiency.
the
The
11MHz
converter
bandwidth and 6V/us slew rate of the error
amplifier
higher
bandwidth and the fast transient response.
The
AIC1401
also
features
over
current
Operation Voltage up to 15V
Voltage-Mode Operation
Fast Transient Response
Built In Accurate 1.3V Voltage Reference
Adjustable Over Current Protection using
R
DS(ON)
No External Current Sense Resistor
Required
Low Shutdown Current
200KHz Free-Running Oscillator
Built in Soft Start.
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APPLICATIONS
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Notebook PC
Advanced PC Mboards
Information PCs
Servers and Workstations
PC Add-On Cards
protection. It provides adjustable over current
trigger point and short-circuit protections by
sensing the output current across the on
resistance of the external N-channel MOSFET
rather then an expensive external low value
sense resistor.
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ORDERING INFORMATION
AIC1401-XX
PACKAGE TYPE
S: SMALL OUTLINE
TEMPERATURE RANGE
C: 0
°
C ~+70
°
C
ORDER NUMBER
AIC1401CS
(SOP8)
PIN CONFIGURATION
TOP VIEW
OCSET 1
/SHDN 2
COMP 3
FB
4
8 VCC
7 UG
6 LX
5 GND
Analog Integrations Corporation
DS-1401-00 May 24, 01
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
TEL: 886-3-5772500
FAX: 886-3-5772510
www.analog.com.tw
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AIC [ ANALOG INTERGRATIONS CORPORATION ]
