LT3652HV Datasheet | Linear Technology

.. LT3652HV Power Tracking 2A Battery Charger Features n n n n n DESCRIPTION The LT®3652HV is a plete monolithic step-down battery charger that operates over a 4.95V to 34V input range. The LT3652HV 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 18V can be programmed with a resistor divider. The LT3652HV 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 LT3652HV is powered by a solar panel, the input regulation loop is used to maintain the panel at peak output power. The LT3652HV can be configured to terminate charging when charge current falls below 1/10 of the programmed maximum (C/10). Once charging is terminated, the LT3652HV 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 LT3652HV 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. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Power Path is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. n n n n n n Input Supply Voltage Regulation Loop for Peak Power Tracking in (MPPT) Solar Applications Wide Input Voltage Range: 4.95V to 34V (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 18V Acmodates 4-Cell Li-Ion/Polymer, 5-Cell Li Fe PO4, Lead-Acid Chemistries Parallelable for Higher Output Current 1MHz Fixed Frequency 0.5% Float Voltage Reference Accuracy 5% Charge Current...