DESCRIPTION
The LT®3652 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.

FEATURES
■ 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,
   NiMH/NiCd Chemistries
■ No VIN Blocking Diode Required for Battery
   Voltages ≤ 4.2V
■ 1MHz Fixed Frequency
■ 0.5% Float Voltage Reference Accuracy
■ 5% Charge Current Accuracy
■ 2.5% C/10 Detection Accuracy
■ Binary-Coded Open-Collector Status Pins
■ 3mm × 3mm DFN12 or MSOP-12 Packages

APPLICATIONS
■ Solar Powered Applications
■ Remote Monitoring Stations
■ LiFePO4 (Lithium Phosphate) Applications
■ Portable Handheld Instruments
■ 12V to 24V Automotive Systems