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參數(shù)資料
SwitchReg
AAT1151
850kHz 700mASynchronous Buck DC/DC Converter
1151.2005.11.1.4
1
General Description
The AAT1151 SwitchReg is a member of
AnalogicTech's Total Power Management IC
(TPMIC) product family. The step-down switching
converter is ideal for applications where high effi-
ciency is required over the full range of output load
conditions. The 2.7V to 5.5V input voltage range
makes the AAT1151 ideal for single-cell lithium-
ion/polymer battery applications. Capable of more
than 700mA with internal MOSFETs, the current-
mode controlled IC provides high efficiency using
synchronous rectification. Fully integrated compen-
sation simplifies system design and lowers external
parts count.
The device operates at a fixed 850kHz switching fre-
quency and enters PFM mode for light load current
to maintain high efficiency across all load conditions.
The AAT1151 is available in MSOP-8 and QFN33-16
packages and is rated over the -40°C to +85°C tem-
perature range.
Features
V
IN
Range: 2.7V to 5.5V
Up to 95% Efficiency
High Initial Accuracy ±1%
110m
R
DS(ON)
Internal Switches
<1μA Shutdown Current
850kHz Switching Frequency
Fixed V
OUT
or Adjustable V
OUT
≥
1.0V
Integrated Power Switches
Synchronous Rectification
Current Mode Operation
Internal Compensation
Stable with Ceramic Capacitors
PWM and PFM for Optimum Efficiency for All
Load Conditions
Internal Soft Start
Over-Temperature Protection
Current Limit Protection
MSOP-8 and QFN33-16 Packages
-40°C to +85°C Temperature Range
Applications
Cellular Phones
Digital Cameras
MP3 Players
Notebook Computers
PDAs
USB-Powered Equipment
Wireless Notebook Adapters
Typical Application
OUTPUT
3.0
μ
H
2x 22
μ
F
10
μ
F
0.1
μ
F
100
LX
VP
INPUT
FB
SGND
AAT1151
ENABLE
VCC
PGND
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PDF描述 |
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| AAT1151IKS-1.0-T1 | 850kHz 700mA Synchronous Buck DC/DC Converter |
| AAT1151IKS-1.8-T1 | 850kHz 700mA Synchronous Buck DC/DC Converter |
| AAT1151IKS-2.5-T1 | 850kHz 700mA Synchronous Buck DC/DC Converter |
| AAT1151IVN-1.0-T1 | 850kHz 700mA Synchronous Buck DC/DC Converter |
| AAT1151IVN-1.8-T1 | 850kHz 700mA Synchronous Buck DC/DC Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT1151_07 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:850kHz 700mA Synchronous Buck DC/DC Converter |
| AAT1151IKS-1.0-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:850kHz 700mA Synchronous Buck DC/DC Converter |
| AAT1151IKS-1.8-T1 | 制造商:Skyworks Solutions Inc 功能描述:DC TO DC CONVERTER |
| AAT1151IKS-2.5-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:850kHz 700mA Synchronous Buck DC/DC Converter |
| AAT1151IKS-3.3-T1 | 制造商:Skyworks Solutions Inc 功能描述:DC TO DC CONVERTER |
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