The LM3620 series of controllers are monolithic integrated circuits designed to control the charging and end-of-charge control for lithium-ion rechargeable batteries. The LM3620 is available in two versions for one or two cell charger applications. Each version provides the option of selecting the appropriate termination voltage for either coke or graphite an ode lithium cells.
Voltage options for charging 1 or 2 cell stacks
Adjustable output voltage for coke or graphite anodes
Precision end-of-charge voltage control
Wide input voltage range (4V to 30V)
Low off state current (<10nA)
Drive provided for external power stage
Tiny SOT-23 package