Texas InstrumentsDV2004S1Power Management Development Boards and Kits

The DV2004S1 Development System provides a development environment for the bq2004, bq2004E, or bq2004H Fast-Charge IC. The DV2004S1 incorporates 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 DV2004S1 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.

Please review the bq2004/E/H data sheet, before using the DV2004S1 boards.

• bq2004/E/H fast-charge control evaluation and development
• Charge current sourced from an on-board switch-mode regulator (up to 3.0 A)
• Fast charge of 4 to 10 NiCd or NiMH cells and one user-defined selection
• Fast charge termination by delta temperature/delta time (DT/Dt), negative delta voltage (-DV) or peak voltage detect, maximum temperature, maximum time, and maximum voltage
• -DV/peak voltage detect, hold-off, top-off, maximum time, and number of cells are jumper-configurable
• -DV/peak voltage detect, hold-off, top-off, maximum time, and number of cells are jumper-configurable
• Programmable charge status display
• Discharge-before-charge control with push-button switch or auto discharge-before-charge with jumper
• Inhibit fast charge by logic-level input

Device Data Sheet