LM3621 Datasheet (National Semiconductor) - Single Cell Lithium-Ion Battery Charger Controller

LM3621, Single Cell Lithium-Ion Battery Charger Controller

The LM3621 is a full function constant voltage, constant current (CVCC) lithium-ion (Li+) battery charger controller.

It provides 1% regulation accuracy over the specified temperature range without requiring the use of external precision resistors.

The IC controls five charge modes: conditioning, fa

LM3621 Features

* Automatic end-of-charge control Preset or user adjustable charge current regulation LED drivers for charging status and fault indication Battery self-discharge refresh (maintenance) Overvoltage/overcurrent fault detection and protection Defective battery pack detection Charge current boost control f