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MAX77751

更新时间： 2024-09-13 02:49:31
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
40页 1782K
描述
3.15A USB-C Autonomous Charger for 1-Cell Li Batteries

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MAX77751 数据手册

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Click here for production status of specific part numbers.  
MAX77751  
3.15A USB-C Autonomous Charger  
for 1-Cell Li+ Batteries  
Benefits and Features  
General Description  
•
•
•
•
•
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Up to 16V Protection  
The MAX77751 is a standalone, 3.15A charger with  
13.7V Maximum Input Operating Voltage  
3.15A Maximum Charging Current  
6A Discharge Current Protection  
No Firmware or Communication Required  
Integrated USB Detection  
• CC Detection for USB Type-C  
• BC1.2 Detection for Legacy SDP, DCP, and CDP  
• Automatic Input Current Limit Configuration  
• Input Voltage Regulation with Adaptive Input  
Current Limit (AICL)  
®
integrated USB Type-C CC detection and reverse  
boost capability. The fast-charge current and top-off  
current thresholds are easily configured with resistors.  
The MAX77751 operates with an input voltage of 4.5V  
to 13.7V and has a maximum input current limit of 3A.  
The IC also implements the adaptive input current limit  
(AICL) function that regulates the input voltage by  
reducing input current, to prevent the voltage of a weak  
adapter from collapsing or folding back.  
The USB Type-C Configuration Channel (CC) detection  
pins on the MAX77751 enable automatic USB Type C  
power source detection and input current limit  
configuration. To support a variety of legacy USB as well  
as proprietary adapters, the IC also integrates BC1.2  
detection using the D+ and D- pins. The IC runs the CC  
detection and BC1.2 detection automatically without any  
software as soon as the USB plug is inserted.  
•
•
Reverse Boost Capability up to 5.1V, 1.5A  
Pin Control of All Functions  
• Resistor-Configurable Fast-Charge Current  
• Resistor-Configurable Top-Off Current  
• ENBST Pin to Enable and Disable Reverse Boost  
• STAT Pin to Indicate Charging Status  
• INOKB Pin to Indicate Input Power-OK (POK)  
• ITOPOFF Pin to Disable Charge  
The IC also offers Reverse-Boost capability up to 5.1V,  
1.5A, which can be enabled with the ENBST pin. The  
STAT pin indicates charging status, while the INOKB pin  
indicates valid input voltage. Charging can be stopped  
by pulling the ITOPOFF pin low.  
•
•
Integrated Battery True-Disconnect FET  
3mm x 3mm, 24 Lead FC2QFN Package  
Ordering Information appears at end of data sheet.  
The MAX77751 is equipped with a Smart Power  
Selector™ and a battery true-disconnect FET to control  
the charging and discharging of the battery or isolate the  
battery in case of a fault. The MAX77751 is offered in  
several variants to support Li-ion batteries with various  
termination voltages from 4.1V to 4.5V. The IC comes in  
a 3mm x 3mm, 0.4mm pitch 24-lead FC2QFN package  
making it suitable for low-cost PCB assembly.  
Applications  
•
•
•
•
•
•
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Mobile Point-of-Sale (mPOS) Terminals  
Portable Medical Devices  
Wireless Headphones  
GPS Trackers  
Charging Cradles for Wearable Devices  
Power Banks  
Mobile Routers  
USB Type-C is a registered trademark of USB Implementers Forum.  
Smart Power Selector is a trademark of Maxim Integrated Products, Inc.  
19-100802; Rev 4; 11/20  
1234567...40

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