ETA3006

www.eta-semi.com

7

Empower, Transcend, Achieve!

ETA3006 Rev 1.0

TYPICAL PERFORMANCE CHARACTERISTICS Cont’d

(TA=25

C, unless otherwise specified)

VTOP plug-out, UP Condition, RS = 25mΩ,

VBOT = 4.3V, VTOP = 3.5V

VBOT plug-out, UP Condition, RS = 50mΩ,

VBOT = 4.3V, VTOP = 3.5V

FEATURE DESCRIPTION

The ETA3006 is a battery cell balancer with lossless inductive architecture based on ETA’s proprietary

technology. The technology is developed by ETA Solutions and any copy without ETA’s agreement will be

forbidden.

During operation, ETA3006 detects the difference between 2 cells then start balancing if the difference

exceeds VKICK. Once detected VKICK, ETA3006 will discharge the higher voltage cell, store that discharging

energy in the inductor then charge that energy to the lower voltage cell. ETA3006 keeps balancing until

there is no difference between 2 cells.

ETA3006 technology allows balancing in either charge or discharge phases of the battery with minimized

loss. Without unbalanced condition, ETA3006 operates in sleep mode with low supply current. This is an

advantage to extend battery pack life time.

STATE MACHINE

The ETA3006 provides a completed state machine that controls whole operation intelligently. With this state

machine, ETA3006 is equipped with self-protection from any accident during balancing. It also keeps the

part stay asleep as much as possible until unbalance detected.

ETA3006 always starts from CHECK state when battery is plugged in.

Any fault always forces ETA3006 back to SLEEP State where ETA3006 burns only 2µA (typically) from BATP.