MAX1555: A compact charger IC for lithium-ion and lithium-polymer batteries, often used in portable electronics.
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Fix it, if the MAX1555 battery charger IC Circuit is not Working?
The battery is not charging: Check the connections properly, and check whether the grounds of the input supply and battery are properly connected to the ground pin of the IC. Also, make sure that the battery is not flat-out dead.
The charging current is too low: Check the temperature of the IC, that is if the generated heat does not dissipate the charging current will be limited by the IC. Also, with a USB input pin the charging current is limited to 100mA. for the maximum charging current use, the DC input.
The circuit’s performance is not stable: Ensure that the input (USB/Adapter) is stable and within the specified voltage range. Also, check whether the supply provides enough current to charge the battery. Use a good bypass capacitor to prevent power disturbance.
➡️Applications: Signal Gating
➡️Alternatives: CD4051,74HC4051
➡️Datasheet: https://components101.com/sites/default/files/component_datasheet/cd4067b-datasheet.pdf
➡️Manufacturer: Texas Instruments
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