LC709301F LiB Charge/Discharge Controller for Bicycle LED Light Systems
■ The LC709301F is a one-chip solution LSI with charging/discharging and overall control functions for bicycle LED lights. Included is a DC/DC charging system to charge high power lithium-ion batteries quickly and efficiently. Supported are 1-cell lithium-ion/polymer (li+) batteries with charging ranges from 25 mA to 2000 mA. The LC709301F is highly efficient for LED lighting operations with ultra-low stand-by current consumption. It includes various safety features for battery and LED such as over current/voltage protection, thermal shutdown. It supports high, medium, low and flashing modes of operation for LED design. Boost efficiency and standby current for the LC709301F is plotted below.
●Key Features:
■DC-DC USB charging support up to 2000 mA range
■LED brightness remains constant even if battery voltage continuously degrades with long use
■Ultra-low standby current consumption
■Supports pass-through charge topology, DC5V output is directly powered via USB when wall power is connected
■Programmable MCU with I2C support
■MCU with on-chip thermistor for providing safety to LED and device
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LiB Charge Controller 、 LiB Discharge Controller 、 one-chip solution LSI |
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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December 2019 |
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Rev. 0 |
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DN05133/D |
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1.1 MB |
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