General Description

The EC9526A battery protection IC is designed to protect lithium-ion / polymer battery from damage or degrading the lifetime due to over current for one-cell lithium-ion / polymer battery powered systems.
such as cellular phones。
The ultra-small package and less required external components make it ideal to integrate the EC9526A into the limited space of battery pack.
The accurate ±50mV overcharging detection voltage ensures safe and full utilization charging.
The very low standby current drains little current from the cell while in storage。

Features

◆High-accuracy voltage detection circuit
Overcharge detection voltage 3.6V to 4.4V Accuracy ± 50mV
Overcharge release voltage 3.6V to 4.4V Accuracy ± 50mV
Overdischarge detection voltage 2.0V to 3.0V Accuracy ± 100mV
Overdischarge release voltage 2.0V to 3.4V Accuracy ± 100mV
Discharge overcurrent detection voltage 0.05V to 0.3V Accuracy ± 30mV
Load short-circuiting detection voltage 1.1V Accuracy ± 200mV
◆Detection delay times are generated by an internal circuit
(external capacitors are unnecessary)
Overcharge detection delay time Typical. 100ms
Overdischarge detection delay time Typical.100ms
Discharge overcurrent detection delay time Typical.10ms
Load short-circuiting detection delay time Typical 450μs
◆ High voltage tolerance is used for charger connection pins, VM and CO pins are
absolute maximum rating ＝ 15V
◆ Wide operation temperature range -40 ~ +85℃
◆ Low current consumption
Operation mode Typ. 2.4 μA / Max. 6.0 μA (25℃)
Standby mode Green-mode Max. 0.1 μA (25℃)
Self-recovery function Max. 3.0 μA (25℃)
◆Small package SOT23-6L
◆Lead-free / Green product

Applications

◆Protection IC for One-Cell Lithium-ion
◆Lithium-Polymer Rechargeable Battery Packs