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Protection for Lithium-Ion Batteries

MJ3401 Series

Outline

The MJ3401 series are protection IC with integrated MOS-FET for protection of the rechargeable Lithium-ion or Lithium-polymer battery. The overcharge, overdischarge and discharging and charging overcurrent protection of the rechargeable one-cell Lithium-ion or Lithium-polymer battery can be detected. It's possible by OTP technology to detect unusual state of a Li-ion battery with very high accuracy.

Product Series

For one-cell

Features

1. Range and accuracy of detection/release voltage
●Overcharge detection voltage 4.15V to 4.50V, 5mV steps Accuracy±10mV
●Overcharge release hysteresis voltage 0V, 0.1V, 0.2V
●Overdischarge detection voltage 2.00V to 3.00V 100mV steps Accuracy±35mV
●Overdischarge release hysteresis voltage 0V, 0.2V, 0.3V, 0.4V
●Discharging overcurrent detection current 4.0A to 8.0A, 0.1A step (Note1)
●Charging overcurrent detection current 4.0A to 8.0A, 0.1A step (Note1)
●Short detection voltage 180mV to 360mV, 10mV step Accuracy±15mV

2. Range of detection delay time
●Overcharge detection delay time 1.024s, 4.60s
●Overdischarge detection delay time 20ms, 96ms, 144ms
●Discharging overcurrent detection delay time 6ms, 8ms, 12ms, 16ms, 20ms, 32ms, 128ms, 256ms
●Charging overcurrent detection delay time 8ms, 16ms, 32ms
●Short detection delay time 500µs, 820µs

3. 0V battery charge functionSelection from "Permission" or "Prohibition" (Note2)

4. Low current consumption
●Normal mode Typ. 4.5µA, Max. 7.0µA
●Stand-by mode Max. 0.1µA (In case Overdischarge latch function "Enable")
              Max. 0.3µA (In case Overdischarge latch function "Disable")

5. MOS-FET  Source to Source on state resistance Typ. 11.0mΩ (@VDD=3.6V)

Note1 : Please inquire to us about details of the accuracy of Overcurrent detection current, which is varies depending on the setting value.

Specifications

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

Package

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Associated Data

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