CXLB73288 is a charging circuit that supports multiple types of lithium batteries or lithium iron phosphate batteries. It presets three or four lithium battery charging modes. At the same time, it also supports other output voltage modes adjusted by peripheral voltage divider resistors. It is a step-down switching converter with a fixed frequency of 300KHz, so it has a high charging efficiency and a very small amount of heat.
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[ CXLB73288 ]"
One, the introduction/INTRO
CXLB73288 is a charging circuit that supports multiple types of lithium batteries or lithium iron phosphate batteries. It presets three or four lithium battery charging modes. At the same time, it also supports other output voltage modes adjusted by peripheral voltage divider resistors. It is a step-down switching converter with a fixed frequency of 300KHz, so it has a high charging efficiency and a very small amount of heat. The CXLB73288 includes a complete charge termination circuit, automatic recharging and a charging voltage control circuit with an accuracy of ± 1.0%. It integrates various functions such as input low voltage protection, output short circuit protection, chip and battery temperature protection. The CXLB73288 adopts a TSSOP-14L package, the peripheral application is simple, and it is used as an efficient charger for large-capacity batteries.
Second, the characteristics/ PECULIARITY
Preset three or four lithium battery output voltage or full voltage through the peripheral voltage divider resistor setting
· Output voltage accuracy of ± 1.0%
Charging status dual output, no battery and fault status display
Supply current in standby mode is 750uA
· Low voltage trickle charging function
· Soft start limits inrush current
· Battery temperature monitoring function
· High anti-surge voltage capability
· TSSOP-14L package with heat sink
Application occasions/ APPLICATION SITUATION
Third, the application
• Laptops
• Pop-type industrial or medical equipment
• Power tools
• Lithium battery or lithium iron phosphate battery
Four, schematic diagram
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