DV2005L1 Fast Charge Development System Control of PNP Power Transistor
The DV2005L1 Linear Development System provides a development environment for the bq2005 Dual-Battery Fast-Charge IC. The DV2005L1 incorporates a bq2005 and two frequency-modulated linear regulators to provide fast charge control for 4 to 10 NiCd or NiMH cells. Review the bq2005 data sheet and the application note, "Using the bq2005 to Control Fast Charge," before using the DV2005L1 board. The fast charge is terminated by any of the following: T/ t, - V, maximum temperature, maximum time, and maximum voltage. Jumper settings select the - V enabled state, and the hold-off, top-off, trickle, and maximum time limits. The user provides a power supply and batteries. The user configures the DV2005L1 for the number of cells, charge termination, and maximum charge time (with or without top-off), and commands the discharge-before-charge option with the push-button switch SW1.