DV2004ES1 (TEXAS INSTRUMENTS)

The DV2004ES1 is a development environment for the bq2004, bq2004E, or bq2004H fast charge IC. The development environment incorporate a bq2004/E/H and a buck type switch mode regulator to provide fast charge controls for 4 to 10 NiCd or NiMH cells. The fast charge is terminated by any of the following DT/Dt, -DV or peak voltage detect, maximum temperature, maximum time, maximum voltage, or an inhibit command. Jumper settings select the voltage termination mode, the hold off, top off, and maximum time limits, and automatic discharge before charge. The user provides a power supply and batteries. The user configures the DV2004ES1 for the number of cells, voltage, charge termination mode, and maximum charge time (with or without top off), and commands the discharge before charge option with the push button switch S1.