MM3284 Datasheet | Mitsumi

Features 1. Overcharge detection voltage 4.0~4.5V Accuracy ±30m V (-40~85°C) 2. Current consumption (VCELL=3.5V) 2.5µA typ. 3. Current consumption (VCELL=2.5V) 2.0µA typ. 4. Maximum rating 28V 5. Operating voltage range: 2~24V 6. No external capacitance required for delay time (Delay time is determined by the internal circuit, ranging from 1s to 12s upon request) Packages SOT-26A SSON-6A Applications 1. Laptop PCs 2. Battery powered device Line-up Model MM3284A MM3284B MM3284C MM3284E MM3284G MM3284H MM3284I MM3284J Overcharge Detection Voltage 4.350±0.03V 4.350±0.03V 4.350±0.03V 4.450±0.03V 4.450±0.03V 4.350±0.03V 4.450±0.03V 4.400±0.03V Overcharge Release Hysteresis Voltage 200±60m V 1000±300m V 1000±300m V 200±60m V 1000±300m V 1000±300m V 1000±300m V 1000±300m V Overcharge Detection Dead Time 1.2s typ. 1.2s typ. 10.0s typ. 1.2s typ. 10.0s typ. 5.0s typ. 5.0s typ. 10.0s typ. MITSUMI Protection for Lithium-Ion Batteries (for double protection) MM3284 Series Pin Assignment VDD 1 6 OV 1 2 3 VDD V3 V2 V1 VSS OV V3 4 5 V2 V1 .. SSON-6A (TOP VIEW) Block Diagram VDD Overcharge detection output control V3 Overcharge detection OV V2 Overcharge detection V1 Overcharge detection Oscillator Counter MITSUMI Protection for Lithium-Ion Batteries (for double protection) MM3284 Series Pin Description Pin No. Pin name Input/Output 1 VDD V3 V2 V1 VSS OV INPUT INPUT INPUT INPUT INPUT OUTPUT cell. The input terminal of the positive voltage for V3 cell and of the negative voltage for V4 cell. The input terminal of the positive voltage for V2 cell and of the negative voltage for V3 cell. The input terminal of the positive voltage for V1 cell and of the negative voltage for V2 cell. The input terminal of the ground of IC and of the negative voltage for V1 cell. The output terminal of over-charge detection. Output type is CMOS. 6 - Normal mode : "Low" - Overcharge mode : "High" Functions The input terminal of the power supply for IC and of the...