Outline
MM3508B series is a double protection IC for 2 to 4 serial cells lithium-ion / lithium-polymer rechargable secondary battery.It detects battery voltage for each cell.Each of these IC composed of four voltage detectors, reference voltage sources, oscillator, counter circuit and logical circuits.
Product Series
For 2 to 4 cells secondary protection
Features
1. Range and accuracy of overcharge detection/hysteresis voltage
●Overcharge detection voltage 4.0V to 4.5V, 5mV step Accuracy±20mV
●Overcharge hysteresis voltage -500mV to -50mV, 50mV step Accuracy±20%
2. Range of detection delay time
●Overcharge detection delay time 1ms to (1ms×2n1)+(1ms×2n2)
*n1 and n2 can select two arbitrary integers between 0 to 13. (However n1≠n2)
3. Low current consumption
●Typ. 3.5µA, Max. 5.0µA (Vcell=4.0V)
●Typ. 0.15µA, Max. 0.30µA (Vcell=2.3V)
Specifications
| Product name |
Package | Stand by function | Overcharge detection voltage [V] |
Overcharge hysteresis voltage （V4） [V] |
Overcharge hysteresis voltage （V1~V3） [V] |
Overcharge detection delay time [s] |
|---|
