etasolution ETA3000D2I

ETA3000 is an inductive cell balancer. Unlike conventional passive balancing technique, ETA3000 utilizes a control scheme with an inductor to shuffle currents between two cells until the cells are balanced. The heat and power dissipation generated in conventional linear balance technique are greatly reduced. The balance time is also significantly reduced due to higher balancing current not being limited by package thermal dissipation. ETA3000 consumes only 2uA ultra-low current from batteries in standby mode, extending the battery shelf time. The final balanced voltages of both cells are also highly accurate which enhances the performance and lifetime for the batteries connected in series. ETA3000 can also be used in multiple cells stacking with even number of cells. ETA3000 includes protection features similar to precondition in battery charging, that is when one cell's voltage is grossly lower than the other, the balancing current is reduced to a safe level until the lower voltage cell is charged up.

• Inductive, Switching control Scheme
• Up to 92% Charger transfer efficiency
• Accurate Balanced voltages down to 30mV
• Auto detect unbalance and auto balance
• Low sleeping supply current, 2μA
• Programmable balancing current up to 2A
• Precondition balancing current
• Status Indications
• Battery Over voltage protection
• Support small size inductor

• Two Cells System
• E-Cigarette
• Battery Pack
• Portable Equipment and Instrumentation
• Battery Backup Systems