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AAT1154 Datasheet

  • AAT1154

  • 1MHz 3A Buck DC/DC Converter

  • 483.63KB

  • 18頁

  • ANALOGICTECH

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1MHz 3A Buck DC/DC Converter
General Description
The AAT1154 SwitchReg鈩?is a member of
AnalogicTech鈩?s Total Power Management鈩?IC
product family. The Step-down switching converter
is ideal for applications where high efficiency, small
size, and low ripple are critical. Able to deliver 3A
with an internal power MOSFET, the current-mode
controlled IC provides high efficiency. Fully inter-
nally compensated, the AAT1154 simplifies system
design and lowers external part count.
The AAT1154 is available in an SOP-8 package,
rated over -40 to 85擄C.
AAT1154
Features
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SwitchReg
鈩?/div>
V
IN
Range: 2.7-5.5Volts
Fixed or adjustable V
OUT
: 1.0V - 4.2V
3A output current
Up to 95% efficiency
Integrated low on resistance power switch
Internally compensated current mode control
1MHz switching frequency
Constant PWM mode
Low output ripple with light load
Internal softstart
Current limit protection
Over-Temperature protection
SOP-8 package
-40 to 85擄C Temperature Range
Preliminary Information
Applications
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Computer Peripherals
Set Top Boxes
Network Cards
Cable/DSL Modems
High efficiency conversion from 5V or 3.3V
supply
Typical Application
INPUT
V
P
FB
10碌F
100鈩?/div>
AAT1154
V
CC
LX
1.5碌H
ENABLE
0.1碌F
GND
120碌F
OUTPUT
1154.2003.08.0.91
1

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