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Protection for Lithium-Ion Batteries

MM3825 Series

Outline

The MM3825 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.

Product Series

For one-cell

Features

1) Range and accuracy of detection voltage
●Overcharge detection voltage 3.6V to 5.0V, 5mV steps Accuracy±20mV
●Overdischarge detection voltage 2.0V to 3.0V, 50mV steps Accuracy±35mV
●Discharging overcurrent detection voltage +20mV to +300mV, 1mV steps Accuracy±2.5mV
●Charging overcurrent detection voltage -300mV to -20mV, 1mV steps Accuracy±2.5mV
●Short detection voltage +70mV to +350mV, 1mV steps Accuracy±8%
●0V Battery Charging Inhibition Voltage 0.9VFix. or 1.1V~2.4V, 0.1V steps Accuracy±0.3V(0.9V)
                                      Accuracy±0.1V(1.1V~2.4V)

2) Low current consumption(Normal)
●Normal mode Typ. 2.5µA, Max. 4.0µA
●Stand-by mode(Overdischarge Latch "ENABLE") Max. 0.1µA
●Stand-by mode(Overdischarge Latch "DISABLE") Max. 0.5μA

3) Low current consumption(MM3825Txx series)
●Normal mode Typ. 2.0µA, Max. 3.0µA
●Stand-by mode(Overdischarge Latch "ENABLE") Max. 0.05µA
●Stand-by mode(Overdischarge Latch "DISABLE") Max. 0.5μA

Specifications

Product
name
Package 0V battery
charge
function
Overcharge release function Overdischarge release function Discharging overcurrent release function Overcharge detection voltage
[V]
Overcharge release voltage
[V]
Overdischarge detection voltage
[V]
Overdischarge release
voltage
[V]
Discharging overcurrent detection voltage
[V]
Charging overcurrent detection voltage
[V]
Short detection voltage
[V]
Overcharge detection delay time
[s]
Overcharge release delay time
[ms]
Overdischarge detection
delay time
[ms]
Overdischarge release
delay time
[ms]
Discharging overcurrent detection delay time
[ms]
Discharging overcurrent release
delay time
[ms]
Charging
overcurrent
detection
delay time
[ms]
Charging overcurrent release delay time
[ms]
Short detection
delay time
[ms]

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Associated Data

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