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MAX77348

更新时间： 2024-09-29 14:57:59
品牌 Logo 应用领域
亚德诺 - ADI 转换器
页数 文件大小 规格书
31页 1425K
描述
超低 IQ、低噪声 3.5W 升降压转换器

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MAX77348 数据手册

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Click here to ask an associate for production status of specific part numbers.  
Ultra-Low I , Low-Noise 3.5W Buck-Boost  
MAX77348A, MAX77348B  
Q
Converter  
General Description  
Benefits and Features  
The MAX77348 is an ultra-low quiescent current, non-  
inverting buck-boost converter capable of supporting up  
to 3.5W output power. The device employs a unique  
control algorithm that seamlessly transitions between  
the buck, buck-boost, and boost modes, minimizing  
discontinuities and subharmonics in the output voltage  
ripple.  
•
•
•
•
•
•
•
•
Input Voltage Range: 2.3V to 5.5V  
Output Voltage Range: 2.5V to 4.8V  
Ultra-Low, 3.5μA (typ) Quiescent Current  
Dynamic Voltage Scaling (DVS)  
Optimized Load Regulation Performance  
Power Good Interrupt  
Output Active Discharge  
Low, Continuous Noise Profile  
• Eliminates Discontinuities Over Operating Range  
• Eliminates Need for Post-Filtering Low Dropout  
(LDO) in Noise Sensitive Applications  
The MAX77348 is ideal for a system handling less than  
3.5W output power from a single cell Li-Ion battery and  
requiring high system efficiency with precise voltage  
control. The MAX77348’s low-noise operation makes it  
optimum to supply power for RF system power, ear bud  
applications, and other portable audio systems.  
•
Protection Features  
• Undervoltage Lockout (UVLO)  
• Thermal Shutdown  
• 6.4ms Soft-Start  
Built-in undervoltage lockout (UVLO), output active  
discharge, and thermal shutdown protection ensures  
safe operation under abnormal operating conditions.  
2
•
I C Interface with Status Interrupts  
• Programmable V  
• Peak Current Limit Level (IPSET1/IPSET2)  
The MAX77348 is available with a highly configurable  
OUT  
2
I C serial interface. The device is available in 16-bump,  
1.77mm x 2.01mm, 0.4mm pitch WLP package.  
Ordering Information appears at end of data sheet.  
Applications  
•
•
•
True Wireless Stereo (TWS) Systems  
Narrow Band Internet of Things (NB IoT)  
Portable Audio/Wireless Systems  
Simplified Block Diagram  
1.0µH  
LVLX  
HVLX  
2.3V TO 5.5V  
10µF  
2.5V TO 4.8V  
22µF  
V
BAT  
V
IN  
V
OUT  
INT  
MAX77348  
SDA  
SCL  
CAP  
EN  
GND  
1µF  
19-101597; Rev 0; 10/22  
© 2023 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.  
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