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Protection for Lithium-Ion Batteries

MM3280 Series


MM3280 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, short, charging overcurrent (optional), and over voltage charger (optional) 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


1. Range and accuracy of detection/release voltage
●Overcharge detection voltage 3.6V to 5.0V, 5mV steps Accuracy±20mV
●Overcharge release voltage 3.6V 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 -300mV to -50mV, 5mV steps Accuracy±20mV
●Short detection voltage Selection from 0.7V, 0.8V, 0.9V Accuracy±100mV
●Over voltage charger detection voltage VDD-8.0V fixed Accuracy±2.0V
●Over voltage charger release voltage VDD-7.3V fixed Accuracy±2.0V

2. Range of detection delay time
●Overcharge detection delay time Selection from 0.25s, 1.0s, 1.2s, 4.5s
●Overdischarge detection delay time Selection from 20ms, 24ms, 96ms, 125ms, 128ms, 144ms
●Discharging overcurrent detection delay time Selection from 8ms, 12ms, 16ms, 20ms, 24ms, 48ms, 96ms, 160ms
●Charging overcurrent detection delay time Selection from 4ms, 6ms, 8ms, 10ms, 12ms, 16ms, 96ms
●Short detection delay time Selection from 200µs, 300µs, 400µs fixed

3. 0V battery charge functionSelection from "Prohibition" or "Permission"

4. The overcharge detection delay timer reset time function(function for the pulse charge)is provided.

5. Low current consumption
●Normal mode Typ. 3.0µA, Max. 6.0µA
●Stand-by mode Max. 0.1µA (For "Charger connection release" the overdischarge release condition.)
Max. 0.5µA (For "Voltage release" the overdischarge release condition.)


Package Pin No. 0V battery
Overcharge release function Overdischarge release function Discharging overcurrent release function Overcharge detection voltage
Overcharge release voltage
Overdischarge detection voltage
Overdischarge release
Discharging overcurrent detection voltage
Charging overcurrent detection voltage
Short detection voltage
Overcharge detection delay time
Overcharge release delay time
Overdischarge detection
delay time
Overdischarge release
delay time
Discharging overcurrent detection delay time
Discharging overcurrent release
delay time
delay time
Charging overcurrent release delay time
Short detection
delay time


Associated Data

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