S-82M3A/M4A/L4A Battery Protection IC

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            S-82M3A/M4A/L4A Battery Protection IC
                    ABLIC S-82M3A/M4A/L4A battery protection ICs are designed for secondary protection of lithium-ion rechargeable batteries
    

Image of ABLIC S-82M3A/M4A/L4A Battery Protection IC ABLIC S-82M3A, S-82M4A, and S-82L4A battery protection ICs are used for secondary protection of lithium-ion rechargeable batteries, and incorporate high-accuracy voltage detection circuits and delay circuits. The S-82M3A and S-82L4A series enable the connection of 3-serial cells, and the S-82M4A and S-82L4A series enable the connection of 4-serial cells. The S-82M3A and S-M4A provide a wake-up function that prevents the fuse from blowing during battery connection, allowing the lithium battery to be connected in any order. Since these ICs also come with a constant voltage output circuit capable of outputting 1.5 V to 3.3 V, they can be used as a constant-voltage power supply for an external RTC (real-time clock IC).

Features

High-accuracy voltage detection circuit for each cell

Overcharge detection voltage n

3.600 V to 5.000 V (5 mV step)

Accuracy ±15 mV (Ta = +25°C)
Accuracy ±20 mV (Ta = -10°C to +60°C) (S-82M3A and S-82M4A)
Accuracy ±25 mV (Ta = -10°C to +60°C) (S-82L4A)

Overcharge release voltage n^*1

3.600 V to 5.000 V

Accuracy ±50 mV

VRTC pin shutdown voltage n

2.500 V to 2.800 V (100 mV step)

Accuracy ±50 mV

The wake-up function monitoring battery connection prevents CO pin output errors during battery connection (S-82M3A and S-82M4A)
Delay times are generated only by an internal circuit (external capacitors are unnecessary)

Overcharge detection delay time, VRTC pin shutdown delay time: 1 s, 2 s, 4 s, 6 s

Output control function via CTL pin (CTL pin is pulled down internally)
Overcharge timer reset function

Available, unavailable

CO pin output voltage is limited to 7.5 V max.
VRTC pin output voltage

1.500 V to 3.300 V (100 mV step)

Accuracy ±2% (Ta = +25°C)

VRTC pin output current

2 mA max.

Wide operation temperature range

Ta= -40°C to +85°C

Low current consumption

During operation (V_CU - 1.0 V for each cell): 4.0 μA max.
During VRTC pin shutdown (V_RSD − 1.0 V for each cell): 1.0 μA max. (S-82M3A and S-82M4A)
During VRTC pin shutdown (V_RSD − 1.0 V for each cell): 0.4 μA max. (S-82L4A)

Lead-free (Sn 100%), halogen-free

Applications

Lithium-ion rechargeable battery packs (for secondary protection)

_{*1. Overcharge release voltage = Overcharge detection voltage - Overcharge hysteresis voltage (Overcharge hysteresis voltage can be selected from a range of 0 mV to 400 mV in 50 mV step.)

Remark n = 1,2,3,4}