PROTECTION IC. S-8224A Datasheet

S-8224A IC. Datasheet pdf. Equivalent

Part S-8224A
Description BATTERY PROTECTION IC
Feature .
Manufacture ABLIC
Datasheet
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S-8224A Datasheet
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S-8224A
S-8224A/B Series
www.ablicinc.com
© ABLIC Inc., 2017-2018
BATTERY PROTECTION IC FOR 2-SERIAL TO 4-SERIAL CELL PACK
(SECONDARY PROTECTION)
Rev.1.3_00
The S-8224A/B Series is used for secondary protection of lithium-ion rechargeable batteries, and incorporates high-accuracy
voltage detection circuits and delay circuits.
Short-circuits between cells accommodate series connection of two cells to four cells.
The S-8224B Series limits its CO pin output voltage to 11.5 V max., so a FET with the gate withstand voltage of 12 V can be
used.
Features
High-accuracy voltage detection circuit for each cell
Overcharge detection voltage n (n = 1 to 4)
3.600 V to 4.700 V (50 mV step)
Accuracy ±20 mV (Ta = +25°C)
Overcharge hysteresis voltage n (n = 1 to 4)*1
Accuracy ±25 mV (Ta = 10°C to +60°C)
0.0 mV to 550 mV (50 mV step)
300 mV to 550 mV
Accuracy ±20%
100 mV to 250 mV
Accuracy ±50 mV
50 mV
Accuracy ±25 mV
0.0 mV
Accuracy 25 mV to +20 mV
Delay times for overcharge detection are generated only by an internal circuit (external capacitors are unnecessary)
Overcharge detection delay time is selectable:
1 s, 2 s, 4 s, 6 s, 8 s
Overcharge release delay time is selectable:
2 ms, 64 ms
Built-in timer reset delay circuit
Output control function via CTL pin
Output form is selectable (S-8224A Series):
CMOS output, Nch open-drain output
Output logic is selectable (S-8224A Series):
Active "H", active "L"
CO pin output voltage is limited to 11.5 V max. (S-8224B Series)*2
High-withstand voltage:
Absolute maximum rating 28 V
Wide operation voltage range:
3.6 V to 28 V
Wide operation temperature range:
Ta = 40°C to +85°C
Low current consumption
During operation (VCU 1.0 V for each cell):
0.25 μA typ., 0.6 μA max. (Ta = +25°C)
During overdischarge (VCU × 0.5 V for each cell):
0.3 μA max. (Ta = +25°C)
Lead-free (Sn 100%), halogen-free
*1. Select the overcharge hysteresis voltage calculated as the following formula.
(Overcharge detection voltage n) + (Overcharge hysteresis voltage n) 3.4 V
*2. Only output logic active "H" is available.
Application
Lithium-ion rechargeable battery packs (for secondary protection)
Package
SNT-8A
1



S-8224A
BATTERY PROTECTION IC FOR 2-SERIAL TO 4-SERIAL CELL PACK (SECONDARY PROTECTION)
S-8224A/B Series
Rev.1.3_00
Block Diagrams
1. S-8224A Series
1. 1 CMOS output product
VDD
VC1
Overcharge detection
comparator 1
+
VC2
VC3
Overcharge detection
comparator 2
+
Overcharge detection
comparator 3
+
Control logic
Delay circuit
Oscillator
CO
VC4
VSS
Overcharge detection
comparator 4
+
CTL CO pin output
control circuit
2
Figure 1





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