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MAX17250 PDF预览

MAX17250

更新时间: 2024-09-19 02:52:43
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
13页 1027K
描述
2.7V to 18V Input, Boost Converter with 0.1μA True Shutdown, Short-Circuit Protection and Selectable Input Current Limit

MAX17250 数据手册

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EVALUATION KIT AVAILABLE  
Click here for production status of specific part numbers.  
MAX17250  
2.7V to 18V Input, Boost Converter with 0.1μA  
True Shutdown, Short-Circuit Protection  
and Selectable Input Current Limit  
General Description  
Benefits and Features  
Input Voltage Range 2.7V to 18V  
TheMAX17250DC-DCboostconverterisahigh-efficiency,  
low quiescent current, synchronous boost (step-up)  
converter with True Shutdown™, programmable input  
current limit, and short-circuit protection. The MAX17250  
has a wide input voltage range of 2.7V to 18V and  
generates an output voltage of 3V to 18V. The MAX17250  
has a maximum on-time of 800ns and implements three  
modes of operation. The first mode of operation is a  
soft-start mode at power-up. The second mode of  
operation is normal operation and utilizes a fixed on-time/  
minimum off-time Pulse Frequency Modulation (PFM)  
architecture that uses only 60μA (typ) quiescent  
current due to the converter switching only when needed.  
The last mode is True Shutdown, where the output is  
completely disconnected from the input, and the battery  
drain is minimized to 0.1μA (typ) shutdown current. The  
MAX17250 is available in a compact, 12-bump, 1.72mm  
x 1.49mm WLP or a 14-pin, 3mm x 3mm TDFN package.  
• 1 or 2 Cell Li-ion Batteries  
Output Voltage Range 3V to 18V, > V  
Integrated Power FETs  
IN  
Selectable Input Peak Current Limit (ISET)  
• 3.5A, 2.7A, or 1.85A  
93% Efficiency  
Low Power  
0.1μA True Shutdown Current  
60μA Quiescent Current  
Protection  
• True Shutdown Prevents Current Flowing Between  
Input and Output  
• Soft-Start Inrush Protection  
• Short-Circuit Protection  
• Overtemperature Protection  
• -40°C to +125°C Operation  
Applications  
Digital Cameras  
Battery Powered Internet of Things (IoT) Device  
1 or 2 Cell Li-ion Battery Applications  
Display Supply  
Ordering Information appears at end of data sheet.  
Buzzer/Alarm Driver  
True Shutdown is a trademark of Maxim Integrated Products.  
Typical Application Circuit  
L
3.0V to 8.4V  
2.2µH  
0.1µF  
12V  
OUT  
IN  
LX  
IN  
BST  
OUT  
PVH  
CIN  
2x10µF  
COUT  
10µF  
CPVH  
2x22µF  
Rz  
1kΩ  
4.7nF  
EN  
GND  
EN MAX17250  
R1  
84.5kΩ  
VL  
ISET  
FB  
VL  
2.2µF  
R2  
10kΩ  
AGND  
PGND  
19-100359; Rev 2; 10/19  

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