參數(shù)資料
型號(hào): AAT1152IKS-2.5-T1
廠商: Advanced Analogic Technologies, Inc.
英文描述: 850kHz 1A Synchronous Buck DC/DC Converter
中文描述: 850kHz 1A條同步降壓DC / DC轉(zhuǎn)換器
文件頁(yè)數(shù): 1/18頁(yè)
文件大?。?/td> 335K
代理商: AAT1152IKS-2.5-T1
SwitchReg
AAT1152
850kHz 1A Synchronous Buck DC/DC Converter
P
1152.2003.01.0.9
1
General Description
The AAT1152 SwitchReg is a member of
AnalogicTech's Total Power Management 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 1A
with internal Power MOSFETs, the current-mode
controlled IC provides high efficiency using syn-
chronous rectification. Fully internally compensat-
ed, the AAT1152 simplifies system design and low-
ers external part count.
The AAT1152 features a Power Good (POK) func-
tion which monitors the output, alerting the system
if the output voltage falls out of regulation.
The AAT1152 is available in MSOP-8 package,
rated over -40 to 85°C.
Features
5.5V max supply input
Fixed output voltage: 1.1V–4.2V with 100 mV
increment
1A output current
Integrated low on resistance power switches
Synchronous rectification
Up to 95% efficiency
Power Good signal
Internally compensated current mode control
High initial accuracy: ±1%
850kHz switching frequency
Constant PWM mode
Low output ripple with light load
Internal softstart
Current limit protection
Over-Temperature protection
MSOP-8 package
Applications
Computer Peripherals
Set Top Boxes
Network Cards
Cable/DSL Modems
High efficiency conversion from 5V or 3.3V
supply
Typical Application
OUTPUT
4.1
μ
H
47
μ
F
10
μ
F
0.1
μ
F
100
LX
100k
V
P
INPUT
FB
SGND
AAT1152
ENABLE
POK
V
CC
P
GND
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