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MAX77831

更新时间： 2024-09-16 14:57:27
品牌 Logo 应用领域
亚德诺 - ADI 转换器
页数 文件大小 规格书
53页 2099K
描述
2.5V至16V输入、18W输出、高效升/降压转换器

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MAX77831 数据手册

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EVALUATION KIT AVAILABLE  
Click here to ask an associate for production status of specific part numbers.  
2.5V to 16V Input, 7A Switching Current  
High-Efficiency Buck-Boost Converter  
MAX77831  
General Description  
Benefits and Features  
The MAX77831 is a high-efficiency, high-performance  
buck-boost converter targeted for systems requiring wide  
input voltage range (2.5V to 16V). It features a 7A switch-  
ing current and can supply up to 6A output current in buck  
mode and up to 4A in boost mode (boost ratio ≤ 1.3).  
● Wide Input Voltage Range: 2.5V to 16V  
● Default Output Voltage  
• 5V with Internal Feedback Resistors  
• 3V to 15V with External Feedback Resistors  
● Default 1.8MHz Switching Frequency  
2
The IC is available in 5V default output voltage when using  
internal feedback resistors. The IC can also be config-  
ured to any default output voltages between 3V and 15V  
when using external feedback resistors. The output volt-  
age is adjustable dynamically through the I C serial inter-  
face (see the Output Voltage Configuration section). The  
• 1.5MHz and 1.2MHz Selectable through the I C  
Interface  
● Forced-PWM (FPWM) Mode Operation Only  
2
● I C-Programmable Output Voltage After Startup  
2
• 4.5V to 15V (Internal Feedback Resistors)  
• 3V to 15V (External Feedback Resistors, see Table  
2)  
IC only operates in forced-PWM (FPWM) mode.  
The SEL pin allows a single external resistor to program  
● Maximum Output Current  
2
four different I C interface slave addresses, four different  
• Buck Mode: Up to 6A  
• Boost Mode: Up to 4A (Boost Ratio ≤ 1.3))  
switching-current limit thresholds, and selection between  
external/internal feedback resistors. The different switch-  
ing-current limit thresholds allow the use of lower profile  
and smaller external components that are optimized for a  
particular application. The use of external feedback resis-  
tors allows for a wider output voltage range and customiz-  
able output voltages at startup.  
● 7A Typical Switching Current  
● R  
Configuration  
SEL  
2
• I C Interface Slave Address  
• Switching Current Limit Threshold  
• Internal/External Feedback Resistors  
2
The I C serial interface is optional and allows dynamically  
2
● I C Programming  
controlling the output voltage, the slew rate of the output  
voltage change, switching-current limit threshold, and  
• Output Voltage (DVS)  
• Slew Rate of Output Voltage Change  
• Switching Current Limit Threshold  
• Switching Frequency  
2
switching frequency. The I C-programmed settings have  
priority over the R  
decoded settings.  
SEL  
The MAX77831 is available in a 2.83mm x 2.03mm  
35-bump wafer-level package (WLP).  
• Power-OK (POK) Status and Fault Interrupt Masks  
• Internal Compensation  
● Soft-Start  
Applications  
● Output Active Discharge  
● Open-Drain Power-OK (POK) Monitor/Fault Condition  
Interrupt  
● Non-Battery Powered Applications up to 16V Input  
● Battery Powered Applications up to 16V Input with EN  
Control  
● Protection Features  
• Undervoltage Lockout (UVLO)  
• Overcurrent Protection (OCP)  
• Overvoltage Protection (OVP)  
• Thermal Shutdown (THS)  
● High Density Interconnect (HDI) PCB Not Required  
(See the PCB Layout Guideline Section)  
● Available in 2.83mm x 2.03mm 35 WLP  
19-100808; Rev 3; 11/22  
Ordering Information appears at end of data sheet.  
© 2023 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.  
One Analog Way, Wilmington, MA 01887 U.S.A. | Tel: 781.329.4700 | © 2023 Analog Devices, Inc. All rights reserved.  
 
 
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