fs3332 Fortune Semiconductor Corporation, fs3332 Datasheet - Page 10

• Manufacturer Part Number: fs3332
• Description: Two Cell Lithium-ion/polymer Battery Protection Ic
• Manufacturer: Fortune Semiconductor Corporation

Rev. 1.0
11. Measurement Circuits
11.1 Measurement 1 Measurement Circuit 1
11.2 Measurement 2 Measurement Circuit 1
11.3 Measurement 3 Measurement Circuit 1
Set S1=OFF, V1=V2=3.6V, and V3=0V under normal condition. Increase V1 from 3.6V gradually. The V1
voltage when CO = 'L' is overcharge detection voltage 1 (VCU1). Decrease V1 gradually. The V1 voltage
when CO = 'H' is overcharge release voltage 1 (VCR1). Further decrease V1. The V1 voltage when DO =
'L' is overdischarge detection voltage 1 (VDL1). Increase V1 gradually. The V1 voltage when DO = 'H' is
overdischarge release voltage 1 (VDR1). Set S1=ON, and V1=V2=3.6V and V3=0V under normal
condition. Increase V1 from 3.6V gradually. The V1 voltage when CO = 'L' is auxiliary overcharge
detection voltage 1 (VCUaux1).
Set S1=OFF, V1=V2=3.6V, and V3=0V under normal condition. Increase V2 from 3.6V gradually. The V2
voltage when CO = 'L' is overcharge detection voltage 2 (VCU2). Decrease V2 gradually. The V2 voltage
when CO = 'H' is overcharge release voltage 2 (VCR2). Further decrease V2. The V2 voltage when DO =
'L' is overdischarge voltage 2 (VDL2). Increase V2 gradually. The V2 voltage when DO = 'H' is
overdischarge release voltage 2 (VDR2). Set S1=ON, and V1=V2=3.6V and V3=0V under normal
condition. Increase V2 from 3.6V gradually. The V2 voltage when CO = 'L' is auxiliary overcharge
detection voltage 2 (VCUaux2).
Set S1=OFF, V1=V2=3.6V, and V3=0V under normal condition. Increase V3 from 0V gradually. The V3
voltage when DO = 'L' is overcurrent detection voltage 1 (VIOV1). Set S1=ON, V1=V2=3.6V, V3=0 under
normal condition. Increase V3 from 0 V gradually. (The voltage change rate < 1.0V/ms) (V1+V2-V3)
voltage when DO = 'L' is overcurrent detection voltage 2 (VIOV2).
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