One-cell Li-ion/Li-polymer

battery protection IC

EC9526

4C12N-Rev.P001

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General Description

The EC9526 series are protection IC using high voltage CMOS process for overcharge, overdischarge and overcurrent

protection of the rechargeable Lithium-ion or Lithium-polymer battery. The overcharge, overdischarge , discharging

overcurrent , charging overcurrent , and short protection of the rechargeable one-cell Lithium-ion or Lithium-polymer battery

can be detected. Each of these IC composed of four voltage detectors, short detection circuit, reference voltage sources,

oscillator, counter circuit and logical circuits.

1) Range and accuracy of detection/release voltage

・ Overcharge detection voltage

4.0V to 4.5V, 5mV steps

Accuracy±20mV

Accuracy±25mV （Topr=-5 to +60℃）

・ Overcharge release voltage

3.9V to 4.5V, 50mV steps

Accuracy±30mV

・ Overdischarge detection voltage

2.0V to 3.0V, 50mV steps

Accuracy±35mV

・ Overdischarge release voltage

2.0V to 3.5V, 50mV steps

Accuracy±100mV

・ Discharging overcurrent detection voltage +50mV to +300mV, 5mV steps

Accuracy±10mV

・ Charging overcurrent detection voltage

-50mV to -300mV, 5mV steps

Accuracy±20mV

・ Short detection voltage

0.5V fixed

Accuracy±100mV

2) Range of detection delay time

・ Overcharge detection delay time

Selection from 143ms, 573ms, 1.2s

・ Overdischarge detection delay time

Selection from 38ms, 150ms, 300ms

・ Discharging overcurrent detection delay time Selection from 4.5ms, 9ms, 18ms

・ Charging overcurrent detection delay time

Selection from 4.5ms, 9ms, 18ms

・ Short detection delay time

Selection from 300us, 400us

3) 0V battery charge function

Selection from "Prohibition" or "Permission"

4) Low current consumption

・ Normal mode

Typ. 3.0uA, Max. 5.5uA

・ Stand-by mode

Max. 0.1uA

5)

Absolute maximum ratings

・ VDD pin

VSS-0.3V to 12V

・ COUT pin and V- pin

VDD-28V to VDD+0.3V

・ DOUT pin

VSS-0.3V to VDD+0.3V

・ Storage temperature

-55 to +125℃

・ Operation temperature

-40 to +85℃

6) Package type

・ SSON-6J

1.40 × 1.40 × 0.55（mm）

・ SON-6C

1.60 × 2.00 × 0.60（mm）