The LT3650 is a complete monolithic single-cell Li-Ion/Polymer battery charger that operates over a 4.75V to 32V input voltage range (7.5V minimum start-up voltage). The LT3650 provides a constant-current/constant-voltage charge characteristic, with maximum charge current externally programmable up to 2A, set using an external current sense resistor. A precondition feature trickle charges a low voltage battery, and bad-battery detection provides a signal and suspends charging if a battery does not respond to preconditioning. The LT3650 can be configured to terminate charging when charge current falls to C/10, or one-tenth the programmed maximum current. Once charging is terminated, the LT3650 enters a low current (85μA) standby mode. An auto-restart feature starts a new charging cycle if the battery voltage drops 2.5% from the fl oat voltage, or if a new battery is inserted into a charging system. The LT3650 contains a user-programmable internal safety timer (typically set to a three hour full cycle time). The IC can be configured to use this internal timer if a time-based termination scheme is desired in which charging can continue below C/10 until a desired time is reached. The LT3650 is available in a low profile (0.75mm) 3mm × 3mm 12-pin DFN and 12-pin MSOP packages. Float Voltage LT3650-4.1 4.1V LT3650-4.2 4.2V LT3650-8.2 8.2V LT3650-8.4 8.4V Applications * Industrial Handheld Instruments * 12V to 24V Automotive and Heavy Equipment * Desktop Cradle Chargers * Notebook Computers * Wide Input Voltage Range: 4.75V to 32V (40V Absolute Maximum) * Programmable Charge Current Up to 2A * User-Selectable Termination: C/10 or Onboard Termination Timer * Dynamic Charge Rate Programming/Soft-Start Pin * Programmable Input Current Limit * No VIN Blocking Diode Required * 1MHz Fixed Frequency * Average Current Mode Control * 0.5% Float Voltage Accuracy https://elecena.pl/product/1343634/high-voltage-2-amp-monolithic-li-ion-battery-charger 2011-02-01 https://elecena.pl/product/1343634/high-voltage-2-amp-monolithic-li-ion-battery-charger 2014-06-11 https://elecena.pl/product/1343634/high-voltage-2-amp-monolithic-li-ion-battery-charger 2025-01-22