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AAT2138IWO-0.6-T1

更新时间： 2024-09-25 20:07:47
品牌 Logo 应用领域
思佳讯 - SKYWORKS 开关光电二极管
页数 文件大小 规格书
18页 4080K
描述
Switching Regulator, Current-mode, 2800kHz Switching Freq-Max, PDSO14

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AAT2138IWO-0.6-T1 技术参数

是否Rohs认证： 符合生命周期：Obsolete
包装说明：SON, SOLCC14,.12,16Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.79模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODEJESD-30 代码：R-PDSO-N14
端子数量：14最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：SON封装等效代码：SOLCC14,.12,16
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
认证状态：Not Qualified子类别：Switching Regulator or Controllers
表面贴装：YES最大切换频率：2800 kHz
温度等级：INDUSTRIAL端子形式：NO LEAD
端子节距：0.4 mm端子位置：DUAL
Base Number Matches：1

AAT2138IWO-0.6-T1 数据手册

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DATA SHEET  
AAT2138  
High Current Step-Down Converter  
with High-Precision Programmable Current Limited Load Switch  
General Description  
Features  
•
The AAT2138 is a high current synchronous step-down  
converter with an integrated current-limited load switch  
designed for high precision current control applications.  
By guarding against excessive input current, AAT2138  
enables the system designer to maximize the output cur-  
rent from the step-down converter while protecting the  
input supply. It is designed for protection of USB ports  
from heavy load transient conditions commonly seen  
with high data rate modem applications.  
Input Voltage Range: 2.7V to 5.5 V  
• Output Voltage Range: Down to 3.0V  
• Current-Limited Load Switch  
- ±10% High Precision  
- Programmable Current Limit Range: 500mA to 3A  
• High-Current Step-Down Converter  
- Efficiency up to 95%  
- 85mΩ High-Side; 50mΩ Low-Side FETs  
- 2.8MHz Switching Frequency  
- 100% Low Dropout Operation  
AAT2138 integrates a high precision programmable cur-  
rent limited P-channel MOSFET load switch to protect the  
input supply against large currents which may cause the  
supply to fall out of regulation. The current limit thresh-  
old is programmed up to 3A by an external resistor  
between RSET and ground.  
- No External Compensation Required  
- PFM/PWM or forced PWM Modes  
- 1MHz to 3MHz External Clock Support  
• Soft Start  
• Independent Enable Pins for Switch and Converter  
• Over-Temperature and Over Load Protection  
• -40°C to +85°C Temperature Range  
• Pb-Free, Low-Profile, 3mmx3mm 14-pin TDFN Package  
The AAT2138 is a 2.8MHz current mode step-down con-  
verter. It utilizes a tiny 1μH inductor and internal com-  
pensation to enable it to have an extremely small foot  
print. The regulator supports 100% duty cycle operation  
for dropout conditions. An external clock in the range of  
1MHz to 3MHz can be fed into MODE as a synchronous  
signal for the step-down regulator. This feature offers  
the flexibility of fine tuning the switching frequency and  
optimizing performance in the application.  
Applications  
•
•
•
•
•
•
Wireless Modem Data Cards  
Portable Hard Drives  
Portable Memory Card Readers  
Barcode Scanners  
Credit Card Readers  
General USB Powered Devices  
AAT2138 is available in a Pb-free, low profile, 14-pin  
3mm x 3mm TDFN package. The product is rated over  
the -40°C to 85°C temperature range.  
Typical Application  
OFF  
VIN  
ENSYS  
RSET  
SYSIN  
REGIN  
2.7V-5.5V  
CIN  
1μF  
RSET  
ON  
1μH  
VOUT  
SW  
CIN  
10μF  
3.4V/3A  
R1  
Bulk Capacitor  
ON  
AAT2138  
CIN  
0.1  
274k Ω  
μF  
COUT  
22μF  
PGND  
R2  
59k Ω  
FB  
ENREG  
OFF  
PWM  
MODE  
AGND  
PFM/PWM  
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com  
1
202006C  
•
Skyworks Proprietary Information  
•
Products and Product Information are Subject to Change Without Notice.  
•
March 18, 2013  
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