DESCRIPTION
The LT® 3650 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-volt age 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.

FEATURES
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 VINBlocking Diode Required
 1MHz Fixed Frequency
 Average Current Mode Control
 0.5% Float Voltage Accuracy
 5% Charge Current Accuracy
 2.5% C/10 Detection Accuracy
 NTC Resistor Temperature Monitor
 Auto-Recharge at 97.5% Float Voltage
 Auto-Precondition at <70% Float Voltage
 Bad-Battery Detection with Auto-Reset
 Binary Coded Open-Collector Status Pins
3mm × 3mm DFN-12 or MSOP-12 Package