Single Cell Lithium-ion Battery Charger Controller - National Semiconductor

The LM3621 is a full function constant voltage, constant cur- rent (CVCC) lithium-ion (Li+) Battery Charger controller. It provides 1% regulation accuracy over the specified tempera- ture range without requiring the use of external precision re- sistors. The IC controls five charge modes: conditioning, fast, top-off, monitor and maintenance. In addition, the LM3621 detects and flags defective batteries as well as over current and over voltage fault events. The architecture of the IC is based on high gain constant voltage and constant cur- rent control loops. The LM3621 is designed to control a switching charger, a lin- ear charger or an off-line ac adapter charger. The LM3621 consists of a Logic controller, precision bandgap reference, wide bandwidth transconductance error amplifi- ers, Comparators and an output Buffer The LM3621 is avail- able in a 16-pin SOIC package and is specified over the range of 0C to 70C. By National Semiconductor Corporation
LM3621 's PackagesLM3621 's pdf datasheet

LM3621 Pinout, Pinouts
LM3621 pinout,Pin out
This is one package pinout of LM3621,If you need more pinouts please download LM3621's pdf datasheet.

LM3621 Application circuits
LM3621 circuits
This is one application circuit of LM3621,If you need more circuits,please download LM3621's pdf datasheet.

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