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AAT2789IRN-AA-T1 PDF预览

AAT2789IRN-AA-T1

更新时间： 2024-01-08 16:51:26
品牌 Logo 应用领域
思佳讯 - SKYWORKS /
页数 文件大小 规格书
22页 2369K
描述
Switching Regulator,

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AAT2789IRN-AA-T1 技术参数

生命周期：Obsolete包装说明：,
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.84
Is Samacsys：N模拟集成电路 - 其他类型：SWITCHING REGULATOR
Base Number Matches：1

AAT2789IRN-AA-T1 数据手册

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DATA SHEET  
AAT2789  
Low Noise, High Frequency Dual Step-Down Converter  
General Description  
Features  
•
•
•
•
•
The AAT2789 is a 2-channel synchronous step-down  
converter operating from an input voltage range of 2.7V  
to 5.5V, making it the ideal choice for single-cell Lithium-  
ion/polymer battery powered systems or low voltage  
3.3V and 5V based consumer equipment.  
VIN Range: 2.7V to 5.5V  
Output Voltage Range: 0.6V to VIN  
Low Noise Light Load Mode  
Low Ripple PWM Mode  
Output Current:  
Channel 1: 1700mA  
Channel 2: 800mA  
▪
▪
Channel 1 delivers up to 1700mA output current while  
Channel 2 delivers up to 800mA. Both converters incor-  
porate a unique low noise architecture which reduces  
output ripple and spectral noise.  
•
•
•
•
•
•
•
•
•
•
•
•
•
Highly Efficient Step-Down Converters  
Low RDS(ON) Integrated Power Switches  
100% Duty Cycle  
High Switching Frequency  
Peak Current Mode Control  
Internal Compensation  
Excellent Transient Response  
Internal Soft Start  
Fast Turn-On Time  
Over-Temperature Protection  
Current Limit Protection  
Low Profile TDFN34-16 Package  
-40°C to 85°C Temperature Range  
The AAT2789 uses a high switching frequency to mini-  
mize external filter sizing. Peak current mode control  
eliminates external compensation while optimizing tran-  
sient performance and stability.  
The AAT2789 requires a minimum of external compo-  
nents to realize a high efficiency dual-output step-down  
converter while minimizing solution size and footprint.  
Each of the step-down regulators has an independent  
input and enable pin. Externally adjustable output volt-  
age is provided. Light load operating mode provides high  
efficiency over the entire load range. Low quiescent cur-  
rent enables excellent life for battery powered systems.  
Applications  
•
•
•
•
•
•
•
•
•
Cellular and Smart Phones  
Digital Cameras  
The AAT2789 is available in a 3x4mm Pb-free 16-pin  
TDFN package and is rated over the -40°C to 85°C oper-  
ating temperature range.  
Handheld Instruments  
Mass Storage Systems  
Microprocessor / DSP Core / IO Power  
PDAs and Handheld Computers  
Portable Media Players  
USB Devices  
Wireless Data Systems  
Typical Application  
VOUT1  
AAT2789  
L1  
1.2V, 1700mA  
VIN: 2.7V - 5.5V  
TDFN34-16  
1.5μH  
LX1  
VP1,2  
VCC1,2  
EN1  
R1  
C2  
59.0k  
R2  
22μF  
6.3V  
PGND1  
EN2  
59.0k  
FB1  
AGND1  
C1  
10μF  
6.3V  
VOUT2  
L2  
3.3μH  
3.3V, 800mA  
LX2  
R3  
C3  
10μF  
6.3V  
267k  
R4  
PGND2  
FB2  
AGND2  
59.0k  
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com  
1
202047A  
• Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 11, 2012  
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