BQ2031-A5 DIL16 Laderegler für Pb-Akkus The bq2031 Lead-Acid Fast Charge IC is designed to optimize charging of lead-acid chemistry batteries. A flexible pulse-width modulation regulator allows the bq2031 to control constant-voltage, constant-current, or pulsed-current charging. The regulator frequency is set by an external capacitor for design flexibility. The switch-mode design keeps power dissipation to a minimum for high charge current applications. Features: ➤ Conforms to battery manufacturers' charge recommendations for cyclic and float charge ➤ Pin-selectable charge algorithms - Two-Step Voltage with temperature-compensated constant-voltage maintenance - Two-Step Current with constant-rate pulsed current maintenance - Pulsed Current: hysteretic on-demand pulsed current ➤ Pin-selectable charge termination by maximum voltage,∆2V, minimum current, and maximumtime ➤ Pre-charge qualification detects shorted, opened, or damaged cells and conditions battery ➤ Charging continuously qualified by temperature and voltage limits ➤ Internal temperature-compensated voltage reference ➤ Pulse-width modulation control - Ideal for high-efficiency switch-mode power conversion - Configurable for linear or gated current use ➤ Direct LED control outputs display charge status and fault conditions