CXLB73252 is a charging management for five lithium batteries, with internal integration of reference voltage source, inductor current detection unit, control circuit and off-chip field effect transistor drive circuit, etc., with few external components, advantages such as simple circuit. When the input power supply is turned on, CXLB73252 enters the charging state and controls the on-inductor current of off-chip N-channel MOSFETs to rise. When it rises to the upper limit of the external current detection resistor setting, off-chip N-channel MOSFETs
When the inductor current drops, the energy in the inductor is transferred to the battery. When the inductor current drops to the lower limit of the external current detection resistor setting, the off-chip N-channel MOSFETs turn on again, thus cycling. When the BAT pin voltage reaches 21V (typical value) for the first time, CXLB73252 voltage charging mode charges the battery with a small current. The charging process ends only when the BAT pin voltage reaches 21V for the second time, and the off-chip N-channel MOSFETs remain off condition. At the end of charging, when the BAT pin voltage drops to the recharge threshold CXLB73252 enters the charging state again CXLB73252 the highest operating frequency can reach 1MHz, and the operating temperature ranges from-40℃ to + 85℃. Other functions include input power adaptive function, battery temperature monitoring function conforming to JEITA standard, battery overvoltage protection, chip overtemperature protection, two drain open-circuit status indicator output terminals and other CXLB73252 use heat dissipation enhanced 8-pin small shape package (eSOP8)
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[ CXLB73252 ]"
