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AAT1151IVN-2.5-T1
EEWorld咨询电话：82357002，82350740－8068 邮件咨询：datasheet@eeworld.com.cn 器件描述：850kHz 700mA Synchronous Buck DC/DC Converter 器件厂商：ANALOGICTECH [Advanced Analogic Technologies] 厂商主页：http://www.analogictech.com/ 文件大小：385.08KB 文件页数：16 PDF阅读：AAT1151IVN-2.5-T1.pdf (点击阅读器件资料) 摘要： SwitchReg ? AAT1151 850kHz 700mA Synchronous 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 ? <1?A 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?H 2x 22?F 10?F 0.1?F 100? LX VP INPUT FB SGND AAT1151 ENABLE VCC PGND 相关器件：AAT1151IKS-2.5-T1 AAT1151IKS-3.3-T1 AAT1151IVN-1.8-T1 AAT1151IKS-1.8-T1 AAT1151IKS-1.0-T1 AAT1151IVN-1.0-T1 AAT1151

AAT1151IVN-2.5-T1

EEWorld咨询电话：82357002，82350740－8068 邮件咨询：datasheet@eeworld.com.cn

器件描述：850kHz 700mA Synchronous Buck DC/DC Converter
器件厂商：ANALOGICTECH [Advanced Analogic Technologies]
厂商主页：http://www.analogictech.com/
文件大小：385.08KB
文件页数：16
PDF阅读：AAT1151IVN-2.5-T1.pdf (点击阅读器件资料)

摘要：
SwitchReg
?
AAT1151
850kHz 700mA Synchronous 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
? <1?A 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?H
2x 22?F
10?F
0.1?F
100?
LX
VP
INPUT
FB
SGND
AAT1151
ENABLE
VCC
PGND

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