The LT3652 is a complete monolithic step-down battery charger that operates over a 4.95V to 32V input voltage range. The LT3652 provides a constant-current/constant-voltage charge characteristic, with maximum charge current externally programmable up to 2A. The charger employs a 3.3V float voltage feedback reference, so any desired battery float voltage up to 14.4V can be programmed with a resistor divider. The LT3652 employs an input voltage regulation loop, which reduces charge current if the input voltage falls below a programmed level, set with a resistor divider. When the LT3652 is powered by a solar panel, the input regulation loop is used to maintain the panel at peak output power. The LT3652 can be configured to terminate charging when charge current falls below 1/10 of the programmed maximum (C/10). Once charging is terminated, the LT3652 enters a low-current (85μA) standby mode. An auto-recharge feature starts a new charging cycle if the battery voltage falls 2.5% below the programmed float voltage. The LT3652 also contains a programmable safety timer, used to terminate charging after a desired time is reached. This allows top-off charging at currents less than C/10. VIN Max VFLOAT Max Features LT3652 32V 14.4V Internal Reverse Blocking VBAT< 4.2V LT3652HV 34V 18V APPLICATIONS * Solar Powered Applications * Remote Monitoring Stations * LiFePO4 (Lithium Phosphate) Applications * Portable Handheld Instruments * 12V to 24V Automotive Systems * Input Supply Voltage Regulation Loop for Peak Power Tracking in (MPPT) Solar Applications * Wide Input Voltage Range: 4.95V to 32V (40V Abs Max) * Programmable Charge Rate Up to 2A * User Selectable Termination: C/10 or On-Board Termination Timer * Resistor Programmable Float Voltage Up to 14.4V Accommodates Li-Ion/Polymer, LiFePO4, SLA Chemistries https://elecena.pl/product/899835/power-tracking-2a-battery-charger-for-solar-power 2009-08-26 https://elecena.pl/product/899835/power-tracking-2a-battery-charger-for-solar-power 2017-10-12 https://elecena.pl/product/899835/power-tracking-2a-battery-charger-for-solar-power 2025-01-18