PCM-S1A3 I2C 3.7V3A

Protection Circuit Module (PCM) for 3.7V Li-Ion Battery (3A limit) with I2C


Protection Circuit Board Specifications  For 3.6V/3.7V Li-ion/Li-po Battery Pack
Model: PCB-S1A3-I2C  IC (BQ27541), I2C
No. Test   item Criterion
1 Voltage Charging voltage DC: 4.2V CC/CV
Balance voltage for single cell N/A
2 Current Normal operating-mode current: Gas Gauge in NORMAL mode,ILOAD > Sleep Current 150μA
SLEEP operating-mode current: Gas Gauge in SLEEP mode,ILOAD < Sleep Current 80μA
FULL SLEEP operating-mode current: Gas Gauge in FULL SLEEP mode,ILOAD < Sleep Current 250μA
Maximal continuous Charging current 3A
Maximal continuous discharging current 3A
3 Over charge Protection
(single cell)
Over charge detection voltage 4.25±0.025V
Over charge detection delay time 0.5S-2.0S
Over charge release voltage 4.05±0.05V
4 Over discharge protection
(single cell)
Over discharge detection voltage 2.50±0.07V
Over discharge detection delay time 10-30mS
Over discharge release voltage 3.0±0.1V
5 Over current protection Over current detection voltage 0.2V±0.015V
Over current detection current 5±1A
Detection delay time 5ms-20ms
Release condition Cut load
6 Short protection Detection condition Exterior short circuit
Detection delay time 100-600us
Release condition Cut load
7 Resistance Protection  circuitry(B- TO P-) ≤50mΩ
8 Temperature Operating Temperature Range -40~+85℃
Storage Temperature Range -40~+125℃
9 Weight
10 Dimenstion LxWxT 56 x 5 x 3 mm

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